We provide sexual reproduction in flowering plants practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on sexual reproduction in flowering plants skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.
List of sexual reproduction in flowering plants Questions
| Question No | Questions | Class |
|---|---|---|
| 1 | A seed is protected by and | 12 |
| 2 | Placentation in Brassicaceae is A. Parietal B. Marginal c. Axile D. Basal |
12 |
| 3 | The plant embryo is formed by the structure ( A cdot A, B ) ( B cdot A, D ) ( c cdot B, C ) D. ( A, B, E ) E. B, C, D |
12 |
| 4 | A nectar-secreting gland cell characteristically contains A. Granular cytoplasm filling the cell and a small nucleus. B. Granular cytoplasm living a central vacuole and a small nucleus. C. Granular cytoplasm filling the cell and a large conspicuous nucleus. D. Vacuolated cytoplasm but with a large nucleus. |
12 |
| 5 | State True or False: All seeds have two cotyledons. |
12 |
| 6 | Identify the wrong statements regarding post-fertilization development. A. The ovary wall develops into pericarp B. The outer integument of ovule develops into tegmen C. The fusion nucleus (triple nucleus) develops into endosperm. D. The ovule develops into seed. E. The ovary develops into fruit |
12 |
| 7 | Identify the given figures ( A, B, C, D ) and E. ( E ) A. A: Marginal, B: Axile, C: Free central, D: Parietal, E: Basal B. A: Marginal, B: Parietal, C: Free central, D: Axile, E: Basal C . A: Marginal, B: Axile, C: Parietal, D: Free central, E: Basal D. A: Marginal, B: Axile, C: Parietal, D: Basal, E: Free central |
12 |
| 8 | Ascending imbricate corolla is found in A. Pisum B. Tamarindus c. Mimosa D. Datura |
12 |
| 9 | In many cultivated ornamental flowers, number of petal whorls is higher than the one in wild type. Extra petals are generally modified A. Sepals B. Petals c. stamens D. Pistils |
12 |
| 10 | Rod-shaped elongated sclereids found in the seed coats of pulses are known as A. Astrosclereids B. Macrosclereids c. Trichosclereids D. Brachysclereids |
12 |
| 11 | Which of the following is capable of forming either a branch or a flower? A. Intercalary meristem B. Axillary budd c. vegetative bud D. None of these |
12 |
| 12 | A giant spadix is formed in a species of A. Colocasia B. Caladium c. Amorphophallous D. Pathos |
12 |
| 13 | Why does the development of endosperm preceeds that of embryo? | 12 |
| 14 | Epigynous and unisexual flowers are found in members of family A. Caryophyllaceae B. Campanulaceae c. Myrtaceae D. Cucurbitaceae |
12 |
| 15 | The ovary is half inferior in the flowers of A. Peach B. Cucumber. c. cotton D. Gauva. |
12 |
| 16 | Anthers represent A. Male gametophytes B. Male sporophylls C . Spermatogonia D. Female gametophytes |
12 |
| 17 | Explain the term perianth. | 12 |
| 18 | Numerous shinning ovules on swollen placentae with axile placentation are found in A. Lagenaria B. Lycopersicon c. Lactuca D. All of the above |
12 |
| 19 | Corolla with four diagonally arranged petals is A. Vexillary B. Cruciform c. Gamopetalous D. Caryophyllaceous |
12 |
| 20 | When placenta forms a ridge along the ventral suture of the ovary and the ovules are borne on this ridge forming two rows, the type of placentation is termed as A. Marginal в. Axile c. Parietal D. Free centra |
12 |
| 21 | Persistent calyx forming a cover around the fruit is found in A. Argemone mexicana B. Ageratum conyzoides c. Withania somnifera D. Brassica campestriss |
12 |
| 22 | A flower characterised by monoadelphous tubular stamens belongs to A. Solanaceae B. Liliaceae c. Malvaceae D. Brassicaceae |
12 |
| 23 | Which of the following structure produces aggregate fruit? A. VII B. I and ( vee ) I c. ॥, ॥ा, ।V, and v D. II, V, and VI E. III and VI |
12 |
| 24 | A flower which can be divided into two equal halves by only one plane is A. zygomorphic B. Actinomorphic c. Regular D. Perfect |
12 |
| 25 | The expression gynoecium is apocarpous implies that the A. Gynoecium comprises only one pistil which is fused with the stamen B. Gynoecium comprises more than one carpel, all of which are free C. Gynoecium comprises only one carpel which is free D. Gynoecium comprises more than one carpel which are fused |
12 |
| 26 | Ascending imbricate corolla is found in A. Pisum B. Tamarindus c. Mimosa D. Datura |
12 |
| 27 | Gynobasic style can be traced in A. Mangifera B. Tagets c. Ocimum D. All of the above |
12 |
| 28 | Flower of Hibiscus is A. Actinomorphic and epigynous B. Actinomorphic and hypogynous c. zygomorphic and hypogynous D. Zygomorphic and epigynous |
12 |
| 29 | Name the four stages of life span. | 12 |
| 30 | 39. Flowers emit fragrance to: (1) purify air (2) drive away flies (3) attract insects (4) perform all the above |
12 |
| 31 | Which one of the following statements is correct? A. Flower of tulip is a modified shoot B. In a tomato, fruit is a capsule c. Seeds of orchids have oil-rich endosperms D. Placentation in primrose basal |
12 |
| 32 | Seed develops from A. Embryo B. Ovule c. Embryo sac D. Ovary |
12 |
| 33 | How many meiotic divisions are required for the formation of 50 zygotes? A. 62 B. 63 ( c cdot 61 ) D. 50 |
12 |
| 34 | Papilionaceous flower with large vexillum covering two wings and the wings covering the keel has corolla aestivation of A. Descending imbricate B. Ascending imbricate c. Twisted D. valvate |
12 |
| 35 | Non-functional stamens are called A. Assessory stamens B. Staminodes c. supplementary stamens D. Staminates |
12 |
| 36 | Pappus is modification of A. Bracts B. corolla c. calyx D. All of the above |
12 |
| 37 | The placentation in a multilocular ovary where the ovules are borne over the entire inner surface is called as A. Pendulous B. Marginal c. superficial D. Parietal |
12 |
| 38 | Compound apocarpous gynoecium is found in A . Lily B. Hollyhock c. Lotus or Ranunculus D. Pumpkin |
12 |
| 39 | In angiosperms, triple fusion produces A. Polar nucleus B. Secondary nucleus c. Primary endospermic nucleus D. Zygotic nucleus |
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| 40 | To which of the following flowers ‘synandrous’ condition is found? A. Sunflower (Helianthus sp.) B. Gourd (cucurbita sp.) c. Pea (Pisum sativum) D. Lemon (Citrus sp.) |
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| 41 | Which is the vital link that ensures continuity of species between organisms of one generation and the next? A. Sexual reproduction B. Embryo c. zygote D. Fertilisation |
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| 42 | Filament attached along the whole length of anther is the condition called A. Adnate B. Dorsifixed c. Basifixed D. Versatile |
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| 43 | Seed develops from | 12 |
| 44 | The characteristic inflorescence of family Cruciferae is A. Umbel B. Racemose c. cymose D. catkin |
12 |
| 45 | The small projections present on the surface of pineapple fruit represent A. Persistent styles B. Persistent stamens c. Persistent calyx D. Persistent bracts |
12 |
| 46 | Ligulate corolla is found in A. Sunflower B. Delphinium ( c . ) Pea D. cucurbita |
12 |
| 47 | The correct floral formula of chilli is ( A ) [ oplus bigoplus_{2+2} C_{4} A_{2+4} C_{(2)} ] B. ( B r . %, K_{4} C_{4} ) Аа ( G_{1} ) ( c ) [ bigoplus bigoplus_{(5)} A_{(5)} G_{(2)} ] ( D ) [ bigoplus bigoplus_{3+3} A_{3+3} G_{(3)} ] |
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| 48 | Name the parts of the ovary which give rise to: Seed |
12 |
| 49 | What happens to the following after fertilization? Petals |
12 |
| 50 | In scapigerous umbel, the flowers are arranged in manner A. Corymb B. Umbel c. Panicle D. Monochasial cyme |
12 |
| 51 | How many plants in the given list have marginal placentation? Mustard, Gram, Tulip, Asparagus, Arhar Sunn Hemp, Chilli, Colchicum, Onion, Moong, Tobacco, Lupin. A. Four B. Five ( c . ) six D. Three |
12 |
| 52 | The botanical term used for the androecium in a flower of China rose (Hibiscus rosa sinensis) is A. Polyadelphous B. Monadelphous c. Diadelphous D. Polyandrous |
12 |
| 53 | Describe the post-fertilization changes in a flower. |
12 |
| 54 | Phytochrome is found in A. Fungi B. Algae c. Pteridophytes D. Angiosperms |
12 |
| 55 | Which of the following is present in monocot flowers? A. Sepals B. Petals c. Tepals D. None of the above |
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| 56 | Obdiplostemonous condition is that in which the stamens are in two whorls and A. Outer whorl is fused to inner whorl. B. Outer whorl is opposite to petals. c. Inner whorl is opposite to petals. D. Both, inner as well as outer whorls are opposite to petals |
12 |
| 57 | Shoe flower belongs to A. Solanaceae B. Malvaceae c. Papillonaceae D. Liliaceae |
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| 58 | The perianth term used when A. Androecium and gynoecium are similar B. Calyx and corolla are similar C. Androecium and calyx are similar D. Corolla and gynoecium are similar |
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| 59 | The long stalk in the stamen is called A. Pollen tube B. Anther c. style D. Filament |
12 |
| 60 | Mention the post fertilisation changes that occur in a flower. |
12 |
| 61 | develops into embryo A. Micropyle B. Chalaza c. zygote D. Pollen grain |
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| 62 | Cucurbits and papaya plants bear staminate and pistillate flowers. Mention the categories they are put under separately on the basis of the type of flowers they bear. |
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| 63 | Staminal tube is found in A. Nicotiana B. Asparagus c. Hibiscus D. Pea |
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| 64 | Versatile anthers occur in A. Helianthus annuus B. Oryza sativa c. solanum tuberosum D. Hibiscus esculentus |
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| 65 | Plants that produce sexually do not produce flower. A. True B. False |
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| 66 | Cruciform corolla is found in A. Pisum B. Radish c. China Rose D. Sunflower |
12 |
| 67 | Basal placentation occurs in A. Poaceae B. Solanaceae c. Malvaceae D. Liliaceae |
12 |
| 68 | Actinomorphic flower is found in family A. Cannaceae B. Poaceae C. Papilionaceae D. Solanaceae |
12 |
| 69 | Which of the following can be related to china rose? A. Anthers are fused B. Filaments are fused in a single mass C. Filaments are fused to form many groups D. All the stamens are free |
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| 70 | Which part of the flower forms the fruit? A. Whole flower B. Only stamens and carpel c. Only ovary D. only carpel |
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| 71 | What happens to the following after fertilization? Ovules |
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| 72 | All floral leaves are placed on the of flower. A. Thalamus B. Petal c. Sepal D. Ovule |
12 |
| 73 | The ovary ripens to form fruit. A. True B. False |
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| 74 | In the plant part having two generations is A. embryo B. unfertilized ovule c. germinated pollen grain D. seed |
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| 75 | Match the following and choose the correct combination from the options given below. begin{tabular}{lll|l} & Column I & & Column II \ & (Placentation Types) & & (Represented in ) \ hline ( mathrm{A} ) & Basal & 1 & Dianthus \ hline ( mathrm{B} ) & Free central & 2 & Pea \ ( mathrm{C} ) & Parietal & 3 & Lemon \ ( mathrm{D} ) & Axile & 4 & Marigold \ ( mathrm{E} ) & Marginal & 5 & Argemone end{tabular} ( mathbf{A} ) ( A-1, B-2, C-3, D-4, E-5 ) B. A- 2, B-3, C- 4, D-5, E-1 C. ( A-4, B-1, C-5, D-3, E-2 ) D. ( A-4, B-3, C-5, D-1, E-2 ) E. ( A-5, B-4, C-3, D-2, E- ) |
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| 76 | When calyx and corolla are not distinguishable, then member of their collective whorl termed as A. Perianth B. Sepal c. Petal D. Tepal |
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| 77 | The zigzag development of axis is an example of A. Umbel B. Nelicoid cyme c. scorpioid cyme D. Verticillaster |
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| 78 | Trimerous condition of floral whorls is characteristic of |
12 |
| 79 | Ascending imbricate corolla is found in A. Pisum or Papilionadae B. Tamarindus or Caesalpinioideae c. Mimosa or Mimosoideae D. Datura or Solanaceae |
12 |
| 80 | Conifers differ from grasses in the A. Absence of pollen tubes B. Formation of endosperm before fertilization c. Production of seeds from ovules D. Lack of xylem tracheids |
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| 81 | Part of pistil which receives pollen is A. Ovary B. Style c. stigma D. Ovule |
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| 82 | A distinct monocot character shown by the flowers of Liliaceae is A. Hypogynous flowers B. Actinomorphic flowers c. Trimerous flowers D. Bisexual flowers |
12 |
| 83 | Placentation in Brassicaceae is A. Parietal B. Marginal c. Axile D. Basal |
12 |
| 84 | What are petals? Why are they generally coloured? | 12 |
| 85 | Beaked, syngenesious anthers and epipetalous stamens are found in A . Liliaceae B. Solanaceae c. compositae D. Malvaceae |
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| 86 | Both a short day plant and a long day plant can produce flower simultaneously in a given place. Explain. |
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| 87 | Which of these is an example for zygomorphic flower with imbricate aestivation? A. Calotropis B. Mustard c. canna D. cassia E. Cucumber |
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| 88 | What is a flower? Describe the parts of a typical angiosperm flower |
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| 89 | Identify the wrong pair of statements. I) The number of stamens in 5 flowers of Allium is equal to those in 5 flowers of Solanum. Il) The microsporangia of Hibiscus and Asparagus are having 80 pollen grains each. Then the ratio of the number of pollen grains produced from each stamen of these two plants is 1: 1 III) The ratio of the number of stamens in the flowers of Pisum and Datura is 2: 1 IV) The number of carpels in a flower of Smilax is equal to the number of carpels in a cyathium inflorescence. A. ॥I, IV B . ।, ॥ ( c cdot 1,1 ) D. II, III |
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| 90 | Which one of the following statement is not applicable to Solanaceae? A. Adnation B. Swollen axile placentation c. Bicarpellary superior ovary D. Monocarpellary superior ovary |
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| 91 | Vexillary aestivation is characteristic of A. Mimosoideae B. Caesalpinoideae c. Papilionaceae D. All of the above |
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| 92 | Individual components of corolla are called A. Sepals B. Petals c. Tepals D. Bracts |
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| 93 | What is the major edible part of a brinjal (egg plant)? This question has multiple correct options A. Pericarp B. Thalamus c. Placenta D. style |
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| 94 | What happens to the following after fertilization? Calyx |
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| 95 | Study the following lists begin{tabular}{l|l|l} List I & List II \ A) & Early seed production in conifers & I) & Indole substance \ hline B) & Seed development and maturation & II) & Terpene substance \ C) & Lateral shoot growth & III) & Volatile substance \ D) & Root hair formation & IV) & Adenine derivative \ hline end{tabular} ( mathbf{A} ) ( A-| I, B-I, C-V, D-I ) B. ( A-11, B-V, C-I V, D-1 ) C. ( A-11, B-1, C-V, D-I V ) D. ( A-I V, B-11 I, C-11, D- ) |
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| 96 | Stamens attached to petals are A. Epipetalous B. Epiphyllous c. Episepalous D. All of the above |
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| 97 | Cruciform corolla is found in A. Sunflower B. China-rose c. Radish D. Pea |
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| 98 | Observe the diagram given below. What happens after the above stage? A. The ovary splits open. B. Ovary develops into a fruit and ovules into seeds. c. The ovules are dispersed D. Germination of seeds takes place |
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| 99 | Which is the sequence of four whorls of flower from outside to inside? A. Calyx ( rightarrow ) Corolla ( rightarrow ) Androceium ( rightarrow ) Gynoceium B. Gynoceium ( rightarrow ) Androceium ( rightarrow ) Corolla ( rightarrow ) Calyx C . Calyx ( rightarrow ) Androceium ( rightarrow ) Corolla ( rightarrow ) Gynoceium D. Gynoceium ( rightarrow ) Corolla ( rightarrow ) Androceium ( rightarrow ) Calyx |
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| 100 | In Zea mays the flowers are A. In form of condensed inflorescence B. Unisexual on different plants C. Diclinous on the same plant D. Hermaphrodite |
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| 101 | Define zygote. | 12 |
| 102 | In a syncarpous unilocular ovary, ovules develop from two opposite lines on the wall. The placentation is A. Superficial B. Marginal c. Axile D. Parietal |
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| 103 | In gymnosperms, the pollination is A. Anemophilous – micropylar B. Anemophilous – stigmatic C. Entomophilous – micropylar D. Entomophilous – stigmatic |
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| 104 | Vexillary aestivation is found in A . Rosaceae B. Cruciferae c. Cucurbitaceae D. Papilionaceae |
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| 105 | Claw is found in the petals of A . Cruciferae B. Fabaceae c. Liliaceae D. Solanaceae |
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| 106 | Cruciferae belongs to A. Parietales B. Bicarpellatae C. Gamopetalae D. Calyciflorae |
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| 107 | The structures that develops into the fruit once fertilization has occurred is A. Integument B. cotyledon c. Ovule D. Ovary E. Endosperm |
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| 108 | Which statement is correct for compositae? A. 5-lobed stamens B. Syngenesious stamens c. Basal ovule D. Ligulate ray florets |
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| 109 | Coloured attractive structures of flower Bougainvillea are the A. Calyx B. Petaloid bracts c. Foliage leaves D. Epicalyx |
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| 110 | Seed of black pepper is A. Endospermic B. Exalbuminous c. Acotyledonous D. Perispermic |
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| 111 | The structures develops into the seed once fertilization has occurred is A. Integument B. cotyledon c. Ovule D. Ovary E. Endosperm |
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| 112 | The ovary of a flower grows into a fruit. A. True B. False |
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| 113 | Multiple spathes around a spadix are found in A. Plantain B. Maize c. Lily D. Ginger |
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| 114 | A plant with both male and female flowers borne over it is A. Monoecious B. Dioecious c. Unisexual D. Bisexual |
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| 115 | In coconut, black covering (thin layer) adherent to the kernel around the endosperm is A. Mesocarp B. Pericarp c. Seed coat D. None of the above |
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| 116 | What are monocarpic and polycarpic plants? | 12 |
| 117 | What is that condition when androecium consists of 4 long and 2 short stamens? A. Didynamous B. Tetradynamous c. Diplostemonous D. None of the above |
12 |
| 118 | After culturing the anther of a plant, a few diploid plants were got along with haploid plants. Which of the following parts might have given rise to diploid plants? A. Vegetative cell of pollen B. Cells of anther wall c. Generative cell of pollen D. Intine of pollen wall |
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| 119 | What are the characteristics associated with the flower? A. Green leaves B. Colourful petals c. Green sepals D. Both B and C |
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| 120 | Assertion The zygote developed from sexual reproduction is diploid. Reason In sexual reproduction, haploid gametes fuse and form zygote. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C. Assertion is correct but Reason is incorrect D. Both Assertion and Reason are incorrect |
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| 121 | The placentation in a multilocular ovary with ovules borne over the entire inner surface is called as A . Basal B. Marginal c. superficial D. Free central |
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| 122 | In flowering plants, the fruit is derived from ( A ) ( mathrm{B} ) ( c ) ( D ) ( E ) |
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| 123 | The inflorescences with indeterminate growth of axis are found in A. Raceme and cyathium B. Umbel and verticillaster c. capitulum and cnrymb D. Cyathium and cymose |
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| 124 | Describe the various modes of fixation of anther over filament. |
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| 125 | Male part of a flower is called A. Stamen B. stigma ( c . ) Egg D. Pollen tube |
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| 126 | (unisexual, fertilisation, fruit, stamen, anther, bisexual, pollination, seed, ovary The ovary of the flower develops into ( mathbf{a} ) |
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| 127 | The stamens are united in two bundles in flowers of A . Pea B. China rose c. Sesbania D. Both (1) & (3) |
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| 128 | The term ‘keel’ is used for special type of A. Sepals B. Petals c. stamens D. carpels |
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| 129 | The fusion of gametes is called as A. Embryo B. Zygote c. Ovum D. Pollen grain |
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| 130 | Arrangement of sepals and petals with respect to each other in flower bud is A. Aestivation B. Phyllotaxy c. Vernation D. Venation |
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| 131 | Identify each part in a flowering plant and write whether it is haploid (n) or diploid (2n). (a) Ovary (b) Anther (c) Egg (d) Pollen (e) Male gamete (f) Zygote |
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| 132 | Which is haploid in Gymnosperm? A. Root, shoot, endosperm B. Endosperm, pollen grain, megaspore C. Root, leaf, bud D. Bulbil, buds, microspore |
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| 133 | Clove is a/an A. Flower budd B. Axillary bud c. Thalamus D. Ovule |
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| 134 | In unilocular ovary the ovules develop on the inner wall of ovary. Placentation can be A . Basal B. Axile c. Parietal D. Free central |
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| 135 | Flower is a modified shoot as A. Thalamus may elongate to show internodes. B. There is aggregation into inflorescence. C . It bears essential organs. D. It may have epicalyx. |
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| 136 | Placenta of a flower is a tissue that A. Forms pollen grains B. Attaches stamens with corolla/ sepals/ tepals c. Bears ovule D. Bears corolla |
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| 137 | Write the male part of flower. | 12 |
| 138 | flowers has trimerous symmetry A. Wheat B. Maize c. Both A and B D. None of the above |
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| 139 | The monocotyledonous seed consists of one large and shield shaped cotyledon known as A. Aleurone layer B. Scutellum c. coleoptile D. Hilum E. Coleorhiza |
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| 140 | In a monoadelphous condition, stamens have A. Filaments of all united in one group but anthers are free B. Filaments united in groups and anthers are absent. C. Anthers are fused but filaments are free. D. Both, anthers and filaments are fused. |
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| 141 | Subfamilies of Leguminosae family are differentiated on the basis of A. Gynoecium B. Corolla and androeium c. Nature of plant D. Nature of fruit |
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| 142 | Define the term placentation. | 12 |
| 143 | A family which was named after its inflorescence is A. Poaceae (graminae) B. Malvaceae c. Apiaceae (Umbelliferae) D. Moraceae |
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| 144 | Endosperm of flowering plants develops from A. Haploid nucleus B. Diploid nucleus c. Triploid nucleus D. Tetraploid nucleus E. Polyploid nucleus |
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| 145 | Nude flower means A. Absence of androecium B. Absence of gynoecium C. Absence of calyx and corolla D. Both (A) and (B) |
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| 146 | If in an inflorescence two lateral branches develop on either side of the terminal flower which again branch is known as A. Monochasial cyme B. Scorpiold cyme C. Helicoid cyme D. Dichasial cyme |
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| 147 | Endosperm of gymnosperms is A. Haploid B. Tetraploid c. Diploid D. None of these |
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| 148 | Which of the following plants in Brassicaceae family have two stamens in flower? A. Raphanus B. Nasturtium c. coronopus D. Brassica |
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| 149 | Centripetally arranged sessile flowers on a flattened convex axis are found in A. Hibiscus B. Helianthus c. Holoptelea D. All of the above |
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| 150 | In which type of aestivation the petal arrangement is 2 external, 2 internal and 1 partly external and partly internal? A. Twisted B. Imbricate c. Quincuncial D. valvate |
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| 151 | Name the parts of the ovary which give rise to: Fruit wall |
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| 152 | The term “Keel” is used for special type of A. Sepals B. Petals c. stamens D. carpels |
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| 153 | In angiosperms, normally after fertilisation. A. The zygote divides earlier than the primary endosperm nucleus B. The primary endosperm nucleus divides earlier than the zygote C. Both the zygote and primary endosperm nuclei divide simultaneously D. Both the zygote and primary endosperm nuclei undergo a resting period |
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| 154 | Stamens attached to petals are A. Antipetalous B. Epipetalous c. Epiphyllous D. Episepalous |
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| 155 | The essential organs of the flower are A. Calyx and Corolla B. Androecium and Gynoecium c. calyx and Androecium D. Corolla and Gynoecium |
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| 156 | In family Papilionaceae, 5 petals form a unique association, in which 3 different elements participate, these are vexillum, alae and carina.What is the number of these elements? A. 1,2,2 respectively B. 2, 1, 2 respectively c. 1,1,3 respectively D. 2, 2, 1 respectively |
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| 157 | Ligulate/strap-shaped corolla occurs in sunflower in A. Disc florets B. Immature florets c. Ray florets D. Both ray and disc florets |
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| 158 | Arrangement of ovules on the placentae developed from central axis of ovary is A. Parietal placentation B. Basal placentation c. Marginal placentation D. Axile placentation |
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| 159 | Arrangement of sepals and petals in the bud condition is called as A. Ptyxis B. Placentation c. Aestivation D. Phyllotaxy |
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| 160 | The evolutionary most advanced inflorescence is found in A . Dahlia B. Salvia c. calotropis D. Yucca |
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| 161 | In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but it is absent in some of the seeds viz. pea, bean, phaseolus (moong) etc. It is due to lack of A. Certain enzymes B. Dicotyledonous hormone c. Growth hormone D. None of the above |
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| 162 | Replum is present in the ovary of flower of A. Sun flower B. Pea c. Lemon D. Mustard |
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| 163 | Which of the following situations correctly describes the similarity between an angiosperm egg and a human egg? (i) Eggs of both are formed only once in a lifetime. (ii) Both the angiosperm egg and human egg are stationary. (iii) Both the angiosperm egg and human egg are motile transported. (iv) Syngamy in both results in the formation of zygote. Choose the correct answer from the |
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| 164 | Flowers which have only stamens are called as A. Male flowers B. Staminate flowers c. Both of (A) and (B) D. Pistillate flowers |
12 |
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