InterviewSolution
Saved Bookmarks
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. |
Which of the following statement/s regarding gametogensis is/ are wrong ? I. Gametogensis refers to the process of formation of the two types of gametes. II. Gametogenesis occurrs is gonads. III. In a majority of sexually reproducing organisms the gameter produced are of morphologically in simialr types (isogametes). IV. Gametogenesis involves the meictioc divison . V. The male gamtes is called the antheroid or sperm and the female gamete is called the egg or ovum.A. II and IV onlyB. III and V onlyC. I, II and III onlyD. III only |
| Answer» Correct Answer - D | |
| 2. |
Why are the plants raised through micropropagation termed somaclones ? (b) Mention two advantage of this technique . |
| Answer» Plants that are raised through micrpropagation are genetically identical to the origingal plant from which they are grown. Hence, they are termed as somaclones. | |
| 3. |
In an experiment, Mr. john dissected a large potato tuber into several small pieces and then placed each piece in a separate pot for gertmination. After few days, he observed that a few pieces germinated and developed new plants. The others did not germinate at all. Give the possible reasons. |
| Answer» Potato tubers bear eyes which are infact dormant buds protected by small bracts. These buse germinate to give new plants. In the expermient performed by Mr. John, the pieces which possessed eyes germinated and those without eyes did not germinate. | |
| 4. |
Paedogenesis is found in the larvae ofA. TaeniaB. FasciolaC. RanaD. Butterfly |
| Answer» Correct Answer - B | |
| 5. |
Testa of seed develops fromA. ovary wallB. hilumC. outer integument of ovuleD. funicle |
| Answer» Correct Answer - C | |
| 6. |
Biodiversity of a geographical region representsA. endangered species found in the regionB. the diversity in the oragnisms living in the regionC. genetic diversity in the dominant species of the regionD. None of these |
| Answer» Correct Answer - B | |
| 7. |
Choose the correct options I. Gametes are always produced from diploid parent plant body. II. Meiocytes are sporocytes in all plants. III. The gymnosperms and pteriodophytes have diploid parent body. IV. In seed plants, pollen grains are carrier of male gametes.A. I, II are correctB. III, IV are correctC. I, III are correctD. II, IV are correct |
| Answer» Correct Answer - B | |
| 8. |
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seeding will be, respectivelyA. 12, 24, 12B. 24, 12, 12C. 12, 24, 24D. 24, 12, 24 |
|
Answer» Correct Answer - C In female gamete the chromosome number will be same as that of the male gamete (12). A zygote is a fertilised egg/seed which means gametes from the parents have been combined (diploid) and thus, the chromosome number will be 24 (2n). A seeding is a young plant sporophyte developing out of a plant embryo from a seed. So, the chromosome number in the cells of the seeding will be 24 (2n), which will further give rise to new diploid individual. |
|
| 9. |
The method of vegetative propagation in Bougainvillea isA. graftingB. LayeringC. bulbilsD. cutting |
| Answer» Correct Answer - D | |
| 10. |
Among the following which is not a method of vegetative propagation?A. Binary fissionB. LayeringC. Stem cuttingD. Tissue culture |
| Answer» Correct Answer - A | |
| 11. |
Which of the following is regenerated with the help of layering?A. CactusB. RoseC. MangoD. jasmine |
| Answer» Correct Answer - D | |
| 12. |
Assertion : An ovlue is tranformed into a fruit after fertilization. Reason : The fruits are formed ony from ovules.A. If both Assertion and Reasons are true and the Reason is a correct explanatin of the Assertion.B. If both Assertion and Reasons are true but Reason is a correct explanatin of the Assertion.C. If Assertion is true but the Reasons is false.D. If both Assertion and Reasons are false. |
| Answer» Correct Answer - D | |
| 13. |
Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals? |
| Answer» Oviparous animals lay eggs outside their body. As a result, the eggs of these animals are under continuous threat from various environmental factors. On the other hand, in viviparous animals, the development of the egg takes place inside the body of the female. Hence, the offspring of an egg-laying or oviparous animal is at greater risk as compared to the offspring of a viviparous animal, which gives birth to its young ones. | |
| 14. |
Why offspring of oviparous animals are at a greater risk as compared to offsprings of viviparous animals ? |
| Answer» Oviparous animals lay eggs in a safe place in the environment. In an open area, the eggs are not always safe and the offsprings are always at a risk. The viviparous animals give birth of young ones. The fertilised eggs of oviparous animals (examples - birds, reptiles, etc.) undergo a period of incubataion and then their young ones hatch out. This period has a risk of pridators. In case of viviparous animals (examples - mammals where it gets proper nourishment, care and protection. Therefore, the chances of survival of young ones are more in viviparous animals as compared to those of oviparous animals. | |
| 15. |
Examine a few flowers of any cucurbit plant and try to identify the staminate and pistillate flowers. Do you know any other plant that bears unisexual flowers? |
| Answer» The staminate flowers bear bright coloured petals and stamens. They do not develop fruits. The pistillate flowers develop fruits. The other unisexual plant is Papaya. Date Palm is also unisexual and bear unisexual flowers. | |
| 16. |
Syngamy is the complete and permanent fusion of two gametes. It includesA. Endogamy and ExogamyB. Isogamy and AnisogamyC. Both (a) and (b)D. None of the above |
| Answer» Correct Answer - C | |
| 17. |
The plants which have lost their capacity to produce seeds is/areA. bananaB. roseC. orangesD. all of these |
| Answer» Correct Answer - D | |
| 18. |
Offsprings produced through which of the following processes/structures represent clone ?A. Gametic fusionB. SyngamyC. Vegetative propaguleD. More than one option is correct |
| Answer» Correct Answer - C | |
| 19. |
Which one of the following processes results in the formation of clone of bacteria?A. TrasformationB. TransductionC. Binary FissionD. Conjugation |
| Answer» Correct Answer - C | |
| 20. |
Examine the figure given below and select the right option giving all the four (a, b, c, d) correctly identified A. `{:((1),"a-Seta","b-Sporophyte"),(,"c-Protonema","d-Rhizoids"):}`B. `{:((2),"a-Antheridiophore","b-Male thallus"),(,"c-Globule","d-Roots"):}`C. `{:((3),"a-Archegoniophore","b-Female thallus"),(,"c-Gemmacup","d-Rhizoids"):}`D. `{:((4),"a-Archegoniophore","b-Female thallus"),(,"c-Bud","d-Foot"):}` |
| Answer» Correct Answer - C | |
| 21. |
Which one of the following is a polygamous plant ?A. MaizeB. CoconutC. LitchiD. Papaya |
| Answer» Correct Answer - C | |
| 22. |
Examine the figure (A-D) given below and select the right option out of a-d in which all the four structures A, B, C, and D are identified correctly A. `{:(" A B C E "),("Rhizome Sporangiophore Polar cell Globule"):}`B. `{:(" A B C E "),("Runner Archegoniophore Synergid Antheridium"):}`C. `{:(" A B C E "),("Offset Antheridiophore Antipodals Oogonium"):}`D. `{:(" A B C D "),("Sucker Seta Megaspore mother cell Gemma cup"):}` |
|
Answer» Correct Answer - C A- Offset of Eichhornia B-Antheridiophore of Marchantia C- Antipodals D- Oogonium (Nuclei) of Chara |
|
| 23. |
Examine the figures (A-D) given below and select the right option out of 1-4 in which all the four structures A,B,C and D are identified correctly Structures : A. `{:(,A,B,C,D),((1),"Rhizome","Sporangiophore","Polar cell","Globule"):}`B. `{:(,A,B,C,D),((2),"Runner","Archegomiophore","Synergid","Antheridium"):}`C. `{:(,A,B,C,D),((3),"Offset","Antheridiophore","Antipodals","Oogonium"):}`D. `{:(,A,B,C,D),((4),"Sucker","Seta","Megaspore mother cell","Gemma cup "):}` |
| Answer» Correct Answer - C | |
| 24. |
Spermatids are transformed into spermatozoa byA. SpermiationB. SpermatogenesisC. MeiosisD. Spermiogenesis |
| Answer» Correct Answer - E | |
| 25. |
The dioecious plant Marchantia develops sex organs onA. AntheridiophoreB. ArchegoniophoreC. Both A and BD. Tassel. |
| Answer» Correct Answer - D | |
| 26. |
After fertilization the ovary develops intoA. seedB. fruitC. pericarpD. stamens |
| Answer» Correct Answer - B | |
| 27. |
In Lacerta saxicola armaniaca (lizard) there areA. females onlyB. males onlyC. bisexual onlyD. Both (1) and (2) |
| Answer» Correct Answer - A | |
| 28. |
Vegetative propagation plays a vital role inA. sericultureB. apicultureC. sylvicultureD. horticulture |
| Answer» Correct Answer - D | |
| 29. |
In which type of parthenogenesis, only males are produced ?A. ArrhenotockyB. ThelytokyC. AmphitokyD. Both (1) and (2) |
| Answer» Correct Answer - A | |
| 30. |
Why sometimes, even diploid offspring is produced through parthenogenesis ?A. when offspring is produced without fertilization of dipoledB. when offspring is produced through fertilization of diploid egg cellsC. when offspring is produced without fertilization of haploid egg cellD. when offspring is produced through fertilization of halpoid egg cell |
| Answer» Correct Answer - A | |
| 31. |
The process in which haploid embryo is formed from haploid egg without fertilization is called :A. aposporyB. apogamyC. agamospermyD. vegetative reproduction |
| Answer» Correct Answer - C | |
| 32. |
Process of fusion of haploid cells isA. cell cycleB. meiosisC. mitosisD. syngamy |
| Answer» Correct Answer - D | |
| 33. |
Which of the following represents a process of development of embryo with paternal chromosomes only?A. PaedogenesisB. ParthenogenesisC. GynogenesisD. Androgenesis |
| Answer» Correct Answer - D | |
| 34. |
The tyep of pollinating involving transfer of pollen grains from answer of the stigma of the same flower is kown asA. geitonogamyB. xenogamyC. autogamyD. apogamy |
|
Answer» Correct Answer - C Geitonogamy. It is a type of self-pollination in which pollen grains of the flowers are transferred to stigma of another flower belonging to either the same plat or genetically similar plant. **Autogamy. It is a type of self pollination in which an intersexual of perfect flower is pollinated by its own pollen. ***Xenogamu. Cross fertilization between flowers of different plants. ****Apogamy. Rerproduction without the fusion of gametes and usually without meiosis. The term may include any form of vegetative reproduction. |
|
| 35. |
Development of embryo from the cells of the nucellus is calledA. ParthenocarpyB. ApocarpyC. Adventive embryonyD. Apospory |
|
Answer» Correct Answer - C In adventive embryony embryo arises from diploid sporophytic cells such as nucellus or integuments (other egg) e.g. citrus. |
|
| 36. |
Synergids areA. haploidB. diploidC. triploidD. tetraploid |
|
Answer» Correct Answer - A Synergids. These the short-lived cells lying close to the eff cell in mature embryonic sac of flowering plaovule. These three cells (two synegids and one egg cell) constitute the egg apparatus. |
|
| 37. |
It is a process of embryosac formation from cell of nucellus, without undergoing meiosis ?A. PolyembryonyB. IncompatibilityC. ParthenocarpyD. Parthenogenesis |
|
Answer» Correct Answer - D Parthenocarpy. The development of fruit without fertilization and therefore without seeds. i.e., a seedless fruit. |
|
| 38. |
Adventive embryony in Citrus is due toA. eggB. nucellusC. embryoD. integument |
|
Answer» Correct Answer - B Nucellus. It is central tissue of the ovule containing the embryo-sac and surrounded by the integumen(s). It generally provides nutrition for embryo sac. |
|
| 39. |
Name the plant shows adventive embryonic cellsA. Sunflower and MangoB. Citrus and MangoC. Lemon and MaizeD. Lemon and Palms |
| Answer» Correct Answer - B | |
| 40. |
Syngamy isA. fusion of gametesB. fusion of cytoplasmsC. fusion of two similar sporesD. fusion of two dissimilar spores |
|
Answer» Correct Answer - A Syngamy refers to the fusion of male and female gametes or compatiblke gametes. It is also known as fertilisation. In seed plants, fertilisation/syngamy occurs with the help of pollen tube and is known as siphonogamy. |
|
| 41. |
The process of series of changes from larva to adult after embryonic development is calledA. regenerationB. metamorphosisC. growthD. ageing |
|
Answer» Correct Answer - B Metamorphosis (meta=change, morphe=form) is a process by which an animal undergoes a comparatively rapid change from larval to adult form. Regeneration is regrowth of the part of body which has been removed due to the inujury or other causes. Growth is an increase in dry mass of an organism. Ageing is propressive deterioration in activity of cell, tissues, organs, etc. |
|
| 42. |
A population of genetically identical individuals, obtained from asexual reproduction isA. CallusB. CloneC. DemeD. Aggregate. |
| Answer» Correct Answer - B | |
| 43. |
A population of genetically identical individuals, obtained from asexual reproduction isA. CallusB. CloneC. DemeD. Aggregate |
| Answer» Correct Answer - B | |
| 44. |
In a developing embryo, analyse the consequences if cell divisions are not followed by cell differentiation. |
| Answer» In a developing embryo, if cell differentiation does not follow the cell division the different parts of embryo will not develop and it will not be able to develop. | |
| 45. |
Match the columns |
| Answer» Correct Answer - B | |
| 46. |
Stem cuttings are often treated with NAA before sowing in order to promoteA. Sprouting of budsB. RootingC. LayeringD. Development of adventitious buds. |
| Answer» Correct Answer - B | |
| 47. |
Leaf and stem cuttings are sownA. vertically with morphological apical end upwardsB. vertically with morphological basal end upwardsC. laterally with morphological upper side upwardsD. laterally with morphological lower side upwards |
| Answer» Correct Answer - C | |
| 48. |
Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction becauseA. sexual reproduction is a lengthy processB. gametes of parents have qualitatively different genetic compositionC. genetic material comes form parents of two different speciesD. greater amount of DNA is involved in sexual reproduction |
| Answer» Correct Answer - B | |
| 49. |
The statements gives below describle certain features that are observed in the pistil of flowers. i. Pistil may have many carpels . ii. Each carpel may have more than one ovule. iii. Each carpel has only one ovule. iv. Pistil have only one carpel Choose the correct answer from the options gives below:A. iand iiB. iand iiiC. ii and ivD. iii and iv |
| Answer» Correct Answer - A | |
| 50. |
Assertion : Zygote is the only cell that gives a vital link between two generations of an organism. Reasons : The two gametes fuse to form a single zygote.A. If both Assertion and Reasons are true and the Reason is a correct explanatin of the Assertion.B. If both Assertion and Reasons are true but Reason is a correct explanatin of the Assertion.C. If Assertion is true but the Reasons is false.D. If both Assertion and Reasons are false. |
| Answer» Correct Answer - B | |