InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Lemur a large animal acts as pollinator inA. flaxB. ravenaelaC. capsellaD. hydrilla |
| Answer» Correct Answer - B | |
| 2. |
Root cells of a wheat plant have 42 chromosomes, the number of chromosomes in egg cell will be:A. 21B. 42C. 63D. 14 |
| Answer» Correct Answer - A | |
| 3. |
Which of the following statements about sporopollenin is wrongA. Exine is formed of sporopolleninB. Sporopollenin is not degraded by any known enzymeC. Sporopollenin occurs in the area of germ pores onlyD. Sporopollenin is most resistant organic material |
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Answer» Correct Answer - C Sporopollenin is absent in the area of germ pores only. |
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| 4. |
In flowering plants, the male gametes are formed byA. Generative cellB. Uninucleate microsporeC. Vegetative cellD. Pollen tube |
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Answer» Correct Answer - A The generative cell divide mitotically to give rise to the two male gametes. |
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| 5. |
Number of gametes produced by a male gametophyte of flowering plant isA. FourB. OneC. ThreeD. Two |
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Answer» Correct Answer - D The generative cell divide mitotically to give rise to the two male gametes. |
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| 6. |
In a flowering plant is microscope mother cell produce four male gametophytes while a megapore mother cell form only one female gametophyte. Explain. |
| Answer» Male gametophytes are formed by the meiosis of a single microspore mother cell whereas in case of formation of female gametophyte, the process is different at the end. A single megaspore mother cell undergoes meiosis to form 4 megaspore, out of which 3 degenerate and only one survives. This surviving megaspore undergoes 3 rounds of mitotic divisions to form the female gametophyte inside the ovule. | |
| 7. |
Number of prothallial cells present in male gametophyte of flowering plant isA. ThreeB. TwoC. OneD. Zero |
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Answer» Correct Answer - D Number of prothallial cells present in male gametophyte of flowering plant is zero. |
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| 8. |
The term used when anthers and stigmas of intersexual or perfectA. bud pollinationB. immature pollinationC. cross pollinationD. cleistogamy |
| Answer» Correct Answer - A | |
| 9. |
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination byA. InsectsB. WaterC. WindD. Animals . |
| Answer» Correct Answer - C | |
| 10. |
Refer to the given characteristics of some flowers. (i) LIght and non-sticky pollen grains (ii) Exserted stigmas and anthers (iii) Large, often feathert stigmas (iv) Flowers colourless, odourless and nectarless (v) Common in grasses Above features are the characteristics ofA. anempohilyB. hydrophilyC. entomophilyD. zoophily |
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Answer» Correct Answer - A Anemophily is a mode of cross pollination or transfer of pollen grains from a mature anther to the stigma of a pistil which is accomplished through the agency of wind, e.g., coconut palm, data palm, maize, many grasses, Cannabis, etc. |
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| 11. |
Night blooming flowers are generallyA. Light weightB. ScentedC. Brightly colouredD. Bloom in clusters |
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Answer» Correct Answer - B Night blooming flowers are generally scented. |
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| 12. |
Night blooming flowers are generallyA. brightly colouredB. odourlessC. light in weightD. white and bloom in clusters |
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Answer» Correct Answer - D Night blooming flowers are usually whitish, sweet and bloom in cluseters. |
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| 13. |
Assertion. Flowers are structures of sexual reproduction . Reason. Various embryological processess of plants occur in the flower.A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion .B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion .C. If Assertion is true and but the Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 14. |
The phenomenon wherein, the ovary develops into a fruit without fertilisation is calledA. ParthnocarpyB. ApomixisC. Asexual reproductionD. Sexual reproduction |
| Answer» Correct Answer - A | |
| 15. |
The phenomenon wherein, the ovary develops into a fruit without fertilisation is calledA. parthenocarpyB. apomixisC. asexual reporductionD. sexual reporduction |
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Answer» Correct Answer - A Fertilised ovary is technically called fruit. But if ovary develops into fruit, without fertilisation, it is called parthenocarpic fruit. Such fruits are generally seedless. Some common examples found in anture are: Citrus, banane, etc. Parthenocarpy can be artifically induced too by application of certain plant hormones, especially, auxins and gibberellins. |
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| 16. |
If the diploid number of chromosomes in an angiospermic plant is 18, what number would you expect in the endosperm and embryo of that plant. |
| Answer» Endoperm=27 and Embryo=18 | |
| 17. |
Assertion Ovules arter fertilisation develops into a fruit. Reason The angiospermic fruits contain diploid endosperm.A. Both Assertion and Reson ae true and Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Both Assertion and Reason are false |
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Answer» Correct Answer - D Ovules after fertilisation develop into seeds that may or may not bear triploid endosperm. |
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| 18. |
Which one of the following statements is not trueA. The flowers pollinated by flies and bats secrete foul odour to attract them.B. Honey is made by bees by digesting pollen collected from flowers.C. Pollen grains are rich in nutrients, and they are used in the form of tablets or syrups.D. Pollen grains of some plants cause severe allergies and bronchial afflictions in some people.s |
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Answer» Correct Answer - A The flowers pollinated by flies and beetles secrete foul odour to attract them. |
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| 19. |
The hilum is a scar on the :A. Fruit, where style was presentB. Seed, where micropyle was presentC. Seed, where funicle was attachedD. Fruit, where it was attached to pedicel. |
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Answer» Correct Answer - C The hilum is a scar on the seed, where funicle was attached. |
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| 20. |
When the ovule is curved and embryo sac becomes horse shoe shaped, such an ovule is calledA. CampylotropousB. AmphitropousC. OrthotrpousD. Anatropous |
| Answer» Correct Answer - B | |
| 21. |
When the ovule is curved and embryo sac becomes horse shoe shaped, such an ovule is calledA. cirncinotropousB. amphitropousC. hemianatropousD. anatropus |
| Answer» Correct Answer - B | |
| 22. |
When the ovule is curved and embryo sac becomes horse shoe shaped, such an ovule is calledA. AmphitropousB. CircinotropousC. AtropousD. Anatropous . |
| Answer» Correct Answer - A | |
| 23. |
Following components are haploid, diploid or triploid (A) oosphere (B) microsphere (C ) sunergids (D) antipodals (E ) oospore (F) nucellus (G) placenta (chalaza) (I) endosperm (J) tapetum Which of following groups show the correct sequence of the ascending order of ploidy in ovule/seed ?A. C,B,DB. A,E,IC. E,F,GD. J,E,H |
| Answer» Correct Answer - B | |
| 24. |
In the embryos of a typical dicot and a grass, true homologous structures areA. Coleorhiza and ColeoptileB. Coleoptile and ScutellumC. Cotyledons and ScutellumD. Hypocotyl and Radical |
| Answer» Correct Answer - C | |
| 25. |
Transfer of pollen grains from _______to stigma of same flower is called_______ |
| Answer» Correct Answer - Anther, Autogamy | |
| 26. |
ovule in which funicle, chalaza and micropyle occur in one vertical plane isA. campylotropousB. amphitropousC. orthotropousD. anatropous |
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Answer» Correct Answer - C The ovule in which the funicle, chalaza and micropyle lie on the vertical plane is called orthotropous (Gk. orthos-straight, trope-turned). In this type the body of ovule is straight. Hilum and chalaza occur nearly. It is also called atropous or erect ovule, e.g. Piperaceae, Polygoniaceae, Urticaceae, etc. It is the most primitive and simplest type of ovule in angiosperms. |
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| 27. |
In angiosperm, triple fusion results in formatioin of:A. Secondary nucleusB. Primary endosperms nucleusC. PolarsD. Zygote |
| Answer» Correct Answer - B | |
| 28. |
Tetrad of megaspores is generallyA. TetrahedralB. LinearC. DecussateD. Isobilateral |
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Answer» Correct Answer - B Tetrad of megaspores is generally linear. |
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| 29. |
Flower with a feathery and sticky stigma, numerous light pollen, reduced petals is characteristicallyA. Month pollinated flowersB. Bird pollinated flowerC. Bee pollinated flowerD. Wind pollinated flower |
| Answer» Correct Answer - D | |
| 30. |
The landing plateform of pollen is _________ |
| Answer» Correct Answer - Stigma | |
| 31. |
Which of the following statement in not correct ?A. Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.B. Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistilC. some reptiles have alos been reported as pollinators in some plant speciesD. Pollen grains of many species can germinates on the stigma of a flower , but only one pollen tube of the same species grows into the style. |
| Answer» Correct Answer - D | |
| 32. |
Famous embryologist of india who also advanced the science of morphology and tissue culture in India isA. P.MaheshwariB. T.S. SadasivanC. SwaminathanD. Ramdeo Misra |
| Answer» Correct Answer - A | |
| 33. |
Explant should be sterilized by:A. StemB. Direct flameC. Chlorine waterD. Alcohol or acid |
| Answer» Correct Answer - C | |
| 34. |
Vegetative propagation in mint occurs byA. RhozomeB. SuckerC. RunnerD. Offset |
| Answer» Correct Answer - B | |
| 35. |
Apomictic embryos in citrus arise fromA. Dipolid eggB. SynergidsC. Maternal sporophytic tissue in ovuleD. Antipodal cells |
| Answer» Correct Answer - C | |
| 36. |
Which one of the following statement is not true ?A. Pollen grains of some plants cause servere allergies and bronchies afflications in some peopleB. The flowers pollinated by flies and bats secrete foul odour to attract themC. Honey is made by bees by digesting pollen collected from flowersD. Pollen grains are rich in nutriens and they are used in the form of tablets and syrups |
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Answer» Correct Answer - C Option (c ) is totally wrong as honey is made by bees from nectar collected from flowers. Option (b) is to be taken as correct as some authors say that flowers pollinated by bats have odour and some others say they may have a disagreeable odour like that of sour milk. |
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| 37. |
The tissue in which cells are filled with reserve food materials and are used for nutrition of the developing embryo, is:A. EpicotylB. HypocotylC. EndospermD. Perisperm |
| Answer» Correct Answer - C | |
| 38. |
Which one of the following may require pollinators but is generatically similar to autogamyA. XenogamyB. ApogamyC. CleistogamyD. Geitonogamy |
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Answer» Correct Answer - D Xenogamy - Cross pollination between two flowers of genetically different flowers. Appgamu - Formation of sporophytefrom gametophyte without involving the formation and fusion of gametes. Cleistogamy - the flowers are intersexual and remain closed causing self-pollination, they do not need pollinators. Geitonogamy - the pollen grains of one flower are transferred to stigma to another flower belonging to either same plant or genetically similar plant. This is similar genetically to autogamy which is self pollination. |
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| 39. |
Which one of the following may require pollinators but is generatically similar to autogamyA. ApogamyB. CleistogamyC. GeitonogamyD. Xenogamy |
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Answer» Correct Answer - C Geitonogamy may require pollinators, but is genetically similar to autogamy. |
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| 40. |
Which one of the following statements is not trueA. Pollen grains are rich in nutrients and they are used in the form of tablets and syrupsB. Pollen grains of same plants cause severe allergies and bronchial afflictions in some peopleC. The flowers pollinated by flies and bats secrets foul odour to attract themD. Honey is made by bees by digesting pollen collected from flowers. |
| Answer» Correct Answer - D | |
| 41. |
Which one of the following may require pollinators but is generatically similar to autogamyA. cleistogamyB. geitonogamyC. xenogamyD. apogamy |
| Answer» Correct Answer - B | |
| 42. |
Yucca plant is pollinated byA. A species of moth (Pronuba)B. A species of wasp ( Blastophaga)C. A species of beetleD. A species of insect |
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Answer» Correct Answer - A Yucca plant is pollinated by a species of moth (Pronuba). |
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| 43. |
The central cell of embryo sac after triple fusion becomes:A. Primary Endosperm Cell (PEC)B. EmbryoC. ZygoteD. Scutellum |
| Answer» Correct Answer - A | |
| 44. |
The microsporangia develop further and become:A. MegasporangiaB. Pollen sacsC. TapetumD. Sporogenous tissue |
| Answer» Correct Answer - B | |
| 45. |
Which of the following species provides floral rewards in the form of providing safe place to lay eggs ?A. AmorphophallusB. FigC. YuccaD. All of the above |
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Answer» Correct Answer - D Amorphophallus, Fig and Yucca species provides floral rewards in the form of providing safe place to lay eggs. |
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| 46. |
Which of the following are the important floral rewards to the animal pollinatorsA. protei pellice cand stigamtic exudatesB. colour and large size of flowerC. nectar an pollen grainsD. floral fragrance and calcium crystals |
| Answer» Correct Answer - C | |
| 47. |
Which of the following are the important floral rewards to the animal pollinatorsA. Nectar and pollen grainsB. Floral fragrance and calcium crystalsC. Protein pellicle and stigmatic exudatesD. Colour and large size of flower |
| Answer» Correct Answer - A | |
| 48. |
Which of the following are the important floral rewards to the animal pollinatorsA. Floral fragrance and calcium crystalsB. Protein pellicle and stigmatic exudatesC. Colour and large size of flowerD. Nectar and pollen grains |
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Answer» Correct Answer - D nectar and pollen grains are the important floral rewards to the animal pollinators. |
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| 49. |
Which of the following are the important floral rewards to the animal pollinatorsA. Colour and large size of flowerB. Nectar and pollen grainsC. Floral fragrance and calcium crystalsD. Protein pellicle and stigmatic exudates |
| Answer» Correct Answer - B | |
| 50. |
Floral rewards providing safe places to lay eggs occur in:A. AmorphophallusB. YuccaC. Both a and bD. None of these |
| Answer» Correct Answer - C | |