We provide how do organisms reproduce? practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on how do organisms reproduce? skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.
List of how do organisms reproduce? Questions
| Question No | Questions | Class |
|---|---|---|
| 1 | The production of offsprings by sexual or asexual process is called as A. Division B. Growth c. Reproduction D. All of the above | 10 |
| 2 | What is the age of puberty in boys and girls? | 10 |
| 3 | Why do girls grow faster than boys at the age of ( 12 ? ) A. Girls reach puberty earlier than boys. B. Boys reach puberty earlier than girls. C. Girls normally take in more proteins at the age of 12. D. Boys normally consume less food. | 10 |
| 4 | How the adolescents gets safe and nurturing environment? | 10 |
| 5 | During growth period, many adolescence get excessive growth, resulting in to a symmetrically giant body. Why it happens so? | 10 |
| 6 | Write the features or characteristics of types of reproduction | 10 |
| 7 | Choose the correct sequence of events occur in human reproduction. A. Gametogenesis ( rightarrow ) gestation ( rightarrow ) insemination ( rightarrow ) fertilization ( rightarrow ) implantation ( rightarrow ) parturition B. Gametogenesis ( rightarrow ) insemination ( rightarrow ) gestation ( rightarrow ) implantation ( rightarrow ) fertilization ( rightarrow ) parturition C. Gametogenesis ( rightarrow ) insemination ( rightarrow ) fertilization ( rightarrow rightarrow ) implantation ( rightarrow ) gestation ( rightarrow ) parturition D. Gestation ( rightarrow ) gametogenesis ( rightarrow ) insemination ( rightarrow ) implantation ( rightarrow ) fertilization ( rightarrow ) parturition | 10 |
| 8 | Very short answer type: State one advantage and one disadvantage of cleistogamy. | 10 |
| 9 | Give the significance of fertilization. | 10 |
| 10 | Give a brief account on reproduction in animals | 10 |
| 11 | After attaining the puberty girls develop voice. A . Low B. High pitched c. Deep D. Low pitched | 10 |
| 12 | Very short answer type. Unlike of conventional breeding programme, it is possible to evolve a cytoplasmic hybrid from two different genera using tissue culture. | 10 |
| 13 | List changes in the body that take place at puberty. | 10 |
| 14 | Which of the following statements is incorrect? A. Earthworms and leeches are hermaphrodite animals. B. Young ones of animals showing external fertilisation receive little or no parental care. C. If the egg is not fertilised, it is thrown out of the body along with the lining of the uterus as menstrual flow. D. Sex organs in human beings are formed at puberty. | 10 |
| 15 | Acne and pimples on the face are due to the secretion of A. Bile from liver B. Oil glands during puberty C. Enzymes in the digestive tract D. Tear from tear glands | 10 |
| 16 | How do you say boys and girls the age of adolescence? | 10 |
| 17 | After fertilization, ovule grows into A. Seed B. Fruit c. Placenta D. None of the above | 10 |
| 18 | Your school has been selected by the department of education to organise and host an interschool seminar on ‘Reproductive Health-Problems and Practices’. However, many parents are reluctant to permit their wards to attend it. Their argument is that the topic is “too embarrassing’. Put forth four arguments with appropriate reasons and explanation to justify the topic to be very essential and timely. | 10 |
| 19 | Growth rate in childhood is controlled by A. Thymosin B. Thyroxine c. Progesterone D. Oestrogen | 10 |
| 20 | Voice is high pitched in A. Aged persons B. Adult males c. Boys D. Females | 10 |
| 21 | At the time of puberty, the hormone that triggers changes is This question has multiple correct options A. Testosterone B. Estrogen c. Adrenaline D. Thyroxine | 10 |
| 22 | On reaching puberty, a woman’s ovaries usually release egg each month. A. one B. Two c. Three D. Many | 10 |
| 23 | Seed having the longest viability is A. chenopodium B. Quercus C. Nelumbo D. Eucalyptus | 10 |
| 24 | As opposed to primary sexual characteristics, changes in secondary sexual characteristics are mostly evident in changes in A. Reproductive capacity B. The skeleton system c. The circulatory system D. External appearance | 10 |
| 25 | How does the height boys and girls change during puberty? | 10 |
| 26 | Adam’s apple is a A. Large developed voice box in males B. Apple which is eaten by Adam c. special class of apple D. None of the above | 10 |
| 27 | List two reasons for the appearance of variations among the progeny formed by sexual reproduction | 10 |
| 28 | The first sign of puberty in female is A. Breast development. B. Menstruation. c. High pitch of voice D. sprouting of pubic hairs. | 10 |
| 29 | The link between parents and offspring is A. Gonads B. Gametes c. zooids D. Hybrids | 10 |
| 30 | It is observed that simple organisms like algae and fungi normally reproduce asexually but before the onset of adverse conditions they shift to sexual reproduction. It is so because sexual reproduction A. Saves time B. Is rapid c. Produces variations D. All of the above | 10 |
| 31 | Voice is high pitched in A. Ages persons B. Adult males c. Boys D. Females | 10 |
| 32 | During adolescence, the body of a girl does not show which of the following changes? A. Acne and pimple on face B. Deep voice c. Development of mammary gland D. Growth of pubic hair | 10 |
| 33 | Hypochondria commonly occurs in adolescents with A. Perceptual disturbance B. Late development c. Physiological aberration D. Chronic mental and physical weakness | 10 |
| 34 | Ovules convert into in the mature fruit. A. Seeds B. Fruits c. stamens D. All of the above | 10 |
| 35 | Very short answer type: List two characters of pollen grains that favour anemophily in plants. | 10 |
| 36 | Puberty is preceded by A. Increased levels of androgen. B. Increased levels of thyroxine. C. Increased levels of insulin. D. None of the above. | 10 |
| 37 | Larynx is also called as A. Voice box B. Sound box ( c . ) Black box D. All of the above | 10 |
| 38 | External or accessory or secondary sexual characters first appear in A. Childhood B. Puberty c. Foetus D. Adulthood | 10 |
| 39 | Unscramble the underlined words in the following sentences. The overgrowth of sclemus in ynxlar leads to the hoarse voice in adolescent boys. A. The overgrowth of scmusle in rylanx leads to the hoarse voice in adolescent boys B. The overgrowth of mulescs in lanxyr leads to the hoarse voice in adolescent boys c. The overgrowth of lesmcus in xylran leads to the hoarse voice in adolescent boys D. The overgrowth of muscles in larynx leads to the hoarse voice in adolescent boys. | 10 |
| 40 | Reproduction is essential for living organisms in order to A. Keep the individual organism alive B. Fulfiill their energy requirement c. Maintain growth D. continue the species generation after generation | 10 |
| 41 | Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true? | 10 |
| 42 | Enlargement of ( ldots ldots . . ) causes change in voice in children. A . Larynx B. Pharynx c. Throat D. Epiglottis | 10 |
| 43 | The features which help to distinguish the male from the female are called as A. sex chromosomes B. Primary sexual characters c. Secondary sexual characters D. All of the above | 10 |
| 44 | What is importance of sexual reproduction in plant? | 10 |
| 45 | Changes in growth of children can be determined through A. Height B. Weight c. Both A and B D. Length | 10 |
| 46 | Which light is most effective in seed germination? A. Green B. Far red c. Red D. Blue | 10 |
| 47 | In girls, the muscles of the body grow more prominently than in the boys. A. True B. False | 10 |
| 48 | In Spirogyra, asexual reproduction takes place by A. Breaking up of filaments into smaller bits. B. Division of a cell into two cells. C. Division of a cell into many cells. D. Formation of young cells from older cells. | 10 |
| 49 | Which of the following flowers are pollinated by wind? A. sunflower B. corn and willow c. buttercup and rose D. orchid and wall flower | 10 |
| 50 | At puberty stage mammary glands develop inside the breasts. A. True B. False | 10 |
| 51 | Which of the following is associated with reproduction? A. Parthenogenesis B. Fertilization c. stos D. All of the above | 10 |
| 52 | Why do young people get acne and pimples on face? | 10 |
| 53 | Height of a person depends on their A. Genes B. Blood c. Habits D. None of the above | 10 |
| 54 | After attaining puberty boys develop voice. A . Low B. High pitchedd c. Deep D. Low pitched | 10 |
| 55 | In the mechanism of action of a protein hormone, one of the second messengers is? A. Cyclic AMP B. Insulin ( c cdot T_{3} ) D. Gastrin | 10 |
| 56 | Which of the following statement can be related to puberty? A. Is never ending B. Is only for girls c. Is only for boys D. Ends at a certain age | 10 |
| 57 | Adam’s apple is prominent in A. Boys of any age B. Adolescent girls c. Girls of any age D. Adolescent boys | 10 |
| 58 | Which one is correctly matched A. Tears – Excretion of salts B. Sweat – Thermoregulation C. Saliva – Testing food D. Statolith – Sexual attraction | 10 |
| 59 | Ageing is characterised by A. Decline in metabolic activity B. Increased metabolic activity C. Increased anabolism D. Increased catabolism | 10 |
| 60 | How are the functions of the reproductive organs in human beings controlled? | 10 |
| 61 | Which of the following options is correct? A. Transfer of pollen grains from the anther to the stigma of the same flower-Autogamy B. Transfer of pollen grains from the anther of one flower to the stigma of another flower of same plantGeitonogamy C. Transfer of pollen grains from the anther to the stigma of a genetically different plant of same speciesXenogamy D. All of these | 10 |
| 62 | Give two floral adpatations of bird pollinated plants. | 10 |
| 63 | causes pimples in both boys and girls at puberty. A. Increased activity of sweat and sebaceous gland B. Decreased activity of sweat and sebaceous gland C. Inactivity of sweat and sebaceous glan D. Viral infection | 10 |
| 64 | Name the mode of reproduction that ensures the creation of new variants. | 10 |
| 65 | Adam’s apple is easily observed in A. Boys B. Girlss c. Both boys and girls D. None of the above | 10 |
| 66 | Generally, girls have a …………… voice whereas the voice in boys is A. High pitched, low pitchedd B. Low pitched, high pitched c. sweet pitched, rough pitched D. None of the above | 10 |
| 67 | Fertilisation is defined as the process by which A. a diploid spermatozoan unites with a haploid ovum to form a triploid zygote B. a haploid spermatozoan unites with a haploid ovum to form a diploid zygote C . a diploid spermatozoan unites with a diploid ovum to form a diploid zygote D. a diploid spermatozoan unites with a haploid ovum to form a diploid zygote. | 10 |
| 68 | Which of the following statements is true? A. Boys will reach puberty at an earlier age than girls. B. At about the age of ( 12, ) girls will grow more rapidly than boys. C. At the end of rapid growth, girls are normally heavier than boys. D. Between the age of 4 to ( 12, ) girls will grow faster than boys | 10 |
| 69 | Plumed seeds occur in A. Naravelia B. Taraxacum c. Calotropis D. colutea | 10 |
| 70 | Name any two copper-releasing Intra Uterine Devices(IUDs). List two reasons that make them effective contraceptives. | 10 |
| 71 | A narrow waistline, wide hip and oily skin are the secondary signs of puberty in A. Males B. Females c. Both A and B D. Not gender-based | 10 |
| 72 | Which one is de novo mutation? A. ( pi times pi rightarrow pi ) B. ( t t times t t rightarrow T t ) ( mathbf{c} cdot mathbf{T} mathbf{t} times mathbf{t t} rightarrow mathbf{T} ) D. ( mathrm{Tt} times mathrm{Tt} rightarrow pi ), Tt, t ( mathrm{t} ) | 10 |
| 73 | Differentiate between adolescence and puberty | 10 |
| 74 | How does the creation of variations in a species promote survival? | 10 |
| 75 | As compared to whole body, the head of new born human baby is A. One-third B. One-half c. one-fifth D. One-fourth | 10 |
| 76 | What is the difference between direct and indirect development? | 10 |
| 77 | With the advancement of age, hair of males start thinning due to A. Falling of hair B. Low ATP formation c. Reduced rate of protein synthesis D. None of the above | 10 |
| 78 | At the time of fertilization, sperm head enters in the egg from A. Any where B. Animal pole c. vegetal pole D. Lateral side of egg | 10 |
| 79 | Muscle growth during puberty occurs A. only in males B. Only in females c. In both genders D. Very slowly in females | 10 |
| 80 | Which of the following plant had developed an obligate symbiotic relationship with a moth called Tagetecula, in relation to pollination A. Amorphophallus B. Ficus c. Salvia D. Yucca | 10 |
| 81 | Although sexual reproduction is a long, drawn, energy-intensive complex form of reproduction, many groups of organisms in kingdom Animalia and Plantae prefer this mode of reproduction. Give at least 3 reasons for this. | 10 |
| 82 | During adolescence, several changes occur in the human body. Out of the following, which change is associated with sexual maturation in boys? A. Loss of milk teeth B. Increase in height c. cracking of voice D. weight gain | 10 |
| 83 | Accessory sexual characters first appear in A. Childhood B. Puberty c. Fetus D. Adulthood | 10 |
| 84 | Very short answer type: Why are pollen grains produced in enormous quantity in maize? | 10 |
| 85 | 34. How many chromosomes pair are in a human body? (1) 24 (2) 19 (3) 22 (4) 23 | 10 |
| 86 | Which of the following pairs are correctly matched? a. spirogyra Fragmentatio an – Planaria ponges b. ( quad ) Regeneration Hydra, Planari and sponges ( mathrm{c} ) Scion an ( – ) The part of the plant that is grafted to other plant Development of d. Parthenogenesis organisms from an unfertilized degg The correctly paired ones are given ( A cdot a, c ) and ( d ) B. ( a, b, c ) and ( d ) ( c . b, c ) and ( d ) D. a, b and d | 10 |
| 87 | Which of the following organisms reproduce by the fragmentation method? A. Rhizopus and Penicillium B. Hydra and Amoeba c. Paramecium and Plasmodium D. Spirogyra | 10 |
| 88 | Define regeneration and fragmentation. | 10 |
| 89 | Reproduction is the characteristics of living organisms, but it cannot be regarded as defining property because A. Asexual reproduction involves only single parent B. Lower organisms do not reproduce under stressful environmental conditions c. All living beings do not have the capacity to reproduce D. For lower plants growth and reproduction are mutually inseparable phenomenon | 10 |
| 90 | What are the major change significant at the stage of adolescents? | 10 |
| 91 | Drones are specified for:- A. Collection of food B. Fertilization of eggs C. Protection D. Egg laying | 10 |
| 92 | Age at which puberty begins in individuals generally is A . ( 10-13 ) B. 15 – 25 ( c cdot 2-4 ) D. 50 – 70 | 10 |
| 93 | What is the transition period from childhood to adulthood? | 10 |
| 94 | During puberty, the testes of boys ……. in size. A. Enlarges B. Shortens c. Lengthens D. Thickens | 10 |
| 95 | Define the term pollination. Differentiate between self pollination and cross pollination. What is the significance of pollination? | 10 |
| 96 | In which of the following plant, the fruit is a drupe, seed coat is thin, embryo is inconspicuous and endosperm is edible? A. Groundnut B. Wheat c. Apple D. coconut | 10 |
| 97 | Why adolescence is also called teenage? | 10 |
| 98 | In adolescents, acne develops into A. Males in response to androgen B. Females in response to oestrogen C. Both males and females in response to androgen D. Both males and females in response to oestrogen | 10 |
| 99 | Give the scientific term used for insect pollinated plants and one example. | 10 |
| 100 | The structure meant for the nourishment of developing embryo in case of plants is A. Pollen tube B. Endosperm c. Both A and B D. None of the above | 10 |
| 101 | Name the type of Pollination mechanism found in members of Fabaceae. | 10 |
| 102 | Plants are able to produce fruits with the help of insects as they are A. Help in aestivation B. Help in pollination c. Help to overcome dormancy D. None of the above | 10 |
| 103 | During adolescence, an adult gains in height and ( ldots ldots . . . ) in weight. A . ( 10 %, 20 % ) B. 30%, 60% c. 25%, 50% D. 40%, 80% | 10 |
| 104 | Reproduction, unlike other life processes, is not essential to maintain the life of an individual organism. A. True B. False | 10 |
| 105 | Define reproduction. | 10 |
| 106 | Out of the seven characters of pea studied by Mendel,gens for three were situated on chromosome number four (flower position,pod shape and plant height.) Suppose if they were closely situated and were linked then which of the following rule would not have been discovered or explained Mendel? A. Law of dominance B. Law of seggregation c. Law of independent assortment D. Law of purity of gametes | 10 |
| 107 | During adolescence, several changes occur in the human body. Find out the change which is associated with sexual maturation in boys. A. Loss of milk teeth B. Increase in height c. cracking of voice D. weight gain | 10 |
| 108 | The stage when the reproductive organs reach sexual maturity is called as A. Puberty B. Menstruation c. Gestation D. Fertilization | 10 |
| 109 | Period of adolescence means the Period between A . 12 to 18 years age B. 15 to 45 years age c. 15 to 24 years age D. 45 to 80 years age | 10 |
| 110 | After attaining puberty, the boys develop a voice. A. Heavy B. Light c. Thinner D. High pitched | 10 |
| 111 | Leyding cells produce a group of hormones called. A. Androgens B. Estrogen c. Aldosterone D. Gonadotropins | 10 |
| 112 | Mark the correct statement for algae. A. Chlorophyllous, thalloid and complex body B. Algae shows limited size and forms C. Reproduce by fragmentation. Each fragment develops into a thallus D. Most common spores produced are the zoospores that are non-flagellated. | 10 |
| 113 | What change occur among boys and girls during adolescence? | 10 |
| 114 | State whether the following statements are true or false. Accessory glands like seminal vesicles | 10 |
| 115 | Stage of life between childhood and adulthood is known as | 10 |
| 116 | What are the symptoms of puberty? A. Growth spurt B. High pitch voice c. sprouting of pubic hairs D. All of the above | 10 |
| 117 | Pollination by bat is called A. Ornithophily B. Chiropterophily c. Malacophily D. Anemophily | 10 |
| 118 | Cotyledon of maize grain is called as A. Plumule B. Coleorhiza c. coleoptile D. Scutellum | 10 |
| 119 | Which of the following process of maintains the existence of the species on the earth? A. Metabolism B. Reproduction c. Adaptation D. None of the above | 10 |
| 120 | What are the risk factors for adolescents? | 10 |
| 121 | Offspring formed due to sexual reproduction have better chances of survival. Why? | 10 |
| 122 | The process of propagation of new individual from the existing one is called as A. Fertilization B. Syngamy c. Reproduction D. Propagation | 10 |
| 123 | The most conspicuous visible change that occurs in boys during puberty is A. Breast development B. Increase in height c. Production of sperms D. None of the above | 10 |
| 124 | Which of the following is a ductless gland? A. Exocrine gland B. Endocrine gland c. Thyroid gland D. Pituitary gland | 10 |
| 125 | At puberty, A. Thigh bones elongate B. Skull bones expand C. Increase in number of bones of rib cage D. Hip joint grows bigger | 10 |
| 126 | The human body undergoes several changes during adolescence. These changes mark the onset of A. Puberty B. Prematurity c. Post adolescence D. Ageing | 10 |
| 127 | Beer is prepared from A. Maize B. Barley c. sugarcane D. Grape | 10 |
| 128 | Reproduction is one of the most important characteristics of living beings. Give three reasons in support of the statement. | 10 |
| 129 | Estradiol is known as the A. Primary female sex hormone B. Primary male sex hormone c. secondary female sex hormone D. Secondary sex hormone | 10 |
| 130 | Decline in hearing power begins after the age of A. 50 years B. 35 years c. 45 years D. 10 years | 10 |
| 131 | Which of the following is a sign of adolescence? A. Increase in the volume of head hair B. Decrease in body weight c. sudden growth of height D. Increase in energy | 10 |
| 132 | What is follicular atresia? | 10 |
| 133 | The megasporangium of the angiosperms on maturation gives rise to A. cotyledons B. Seed c. Fruit D. Endosperm | 10 |
| 134 | At puberty women start producing A. Sperms B. Urine c. Young ones D. ova | 10 |
| 135 | The stage during which the body becomes capable of reproduction is called A. menstruation B. puberty c. menopause D. adulthood | 10 |
| 136 | Which statement describes human cells formed by meiosis? A. They are genetically identical and they become gametes. B. They are genetically identical and they become tissues. C. They are not genetically identical and they become gametes. D. They are not genetically identical and they become tissues. | 10 |
| 137 | The transfer of pollens from anther to stigma of the same flower is called as A. Cross pollination B. Self-fertilization c. cross breeding D. Hybridization | 10 |
| 138 | Pubertal changes in boys include A. Development of gonads B. Voice change C. Facial hair D. All of the above | 10 |
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