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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.
| 801. |
A pistillate flower of tetraploid angiosperm is pollinated by pollen from staminate flower of diploid plant. What would be the ploidy iin endosperm of seeds thus formed ?A. 3nB. 4nC. 5nD. 6n |
| Answer» Correct Answer - C | |
| 802. |
If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will beA. tetraploidB. pentaploidC. haploid tripoidD. |
| Answer» Correct Answer - B | |
| 803. |
The diploid and triplod product of double fertilization resecitvely areA. zygote and primary endosperm nucleusB. endosperm and cotyledonsC. embryo and perispermD. zygote and scutellum |
| Answer» Correct Answer - A | |
| 804. |
Which one of the following are not diploid?A. Root and shoot tipsB. Nucellus and integumentsC. Secondary nucleus and zygoteD. Pollens and egg cell |
| Answer» Correct Answer - D | |
| 805. |
Cellular totipotency was first demonstrated in:A. PollensB. Pholem of carrot rootsC. Leaves of NicotianaD. Tomato fruits |
| Answer» Correct Answer - D | |
| 806. |
Testa is completely fused with pericarp in fruits of:A. CypselaB. BerryC. CaryopsisD. Drupe |
| Answer» Correct Answer - C | |
| 807. |
In hypogeal germination due to elongation of ….plumule comes out of the ground Or The portion of embryonal axis above cotyledon is called asA. HypocotylB. EpicotylC. CotyledonsD. Both A and B |
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Answer» Correct Answer - B In hypgeal germination plumule comes out of ground due to elongation of epicotyl. |
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| 808. |
Hair present on the cob of corn are Or Long filamentous threads protruding at the end of young cob of maize areA. StigmasB. StylesC. Stigma and stylesD. None of these |
| Answer» Correct Answer - C | |
| 809. |
Ploidy level of female plant is the same as that of its:A. FruitsB. SeedsC. EmbryoD. Endosperm |
| Answer» Correct Answer - A | |
| 810. |
A few fowering plants such as some species of Asteraceae and grasses have evolved a special mechanism to produce seeds without fertilization is called:A. ApomixisB. ParthenocarpyC. AmphimixisD. Embryogeny |
| Answer» Correct Answer - A | |
| 811. |
If the ovary is inferiour, the outermost layer of fruit produced by this ovary will be formed by:A. EpicarpB. MesocarpC. PericarpD. Thalamus |
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Answer» Correct Answer - D the outermost layer in fruits derived from inferior ovary is always thalamus. Thalamus forms a hollow cup like structure to enclose portion of ovary in epigynous flowers. |
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| 812. |
The wall of the ovary develops into:A. IntegumentB. TestaC. TegmenD. Pericarp |
| Answer» Correct Answer - D | |
| 813. |
After pollination, ovary wall develops into:A. CarpelB. OvuleC. FruitD. Juicy mesocarp |
| Answer» Correct Answer - C | |
| 814. |
Apomictic embryos in citrus arise fromA. Maternal sporophytic tissue in ovuleB. Antipodal cellsC. Haploid cellsD. Synergids |
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Answer» Correct Answer - A Apomictic embryos in citrus arise from maternal sporphytic tissue in ovule. |
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| 815. |
Xenia refers toA. effect of pollen on endospermB. effect of pollen on stemsC. effect of pollen on taste of fruitsD. effect of pollen on vascular tissue |
| Answer» Correct Answer - A | |
| 816. |
Xenia nd metaxenia are related toA. Only endospermB. Xylem and phloemC. Pollen and endospermD. Pollen culture |
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Answer» Correct Answer - C Xenia and metaxenia are related to pollen and endosperm. |
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| 817. |
Arrangement of four wall layers in microsporangium from inside to outside is as follows :A. Epidermis, endothecium, tapetum and middle layersB. Epidermis, middle layers, endothecium and tapetumC. Epidermis, endothecium, middle layers and tapetumD. Tapetum, middle layers, endothecium and epidermis |
| Answer» Correct Answer - D | |
| 818. |
Which one of the following statement is correct ?A. Sporogenous tissue is haploid.B. Endothecium produces the microspores .C. Tapetum nourishes the developing pollen.D. Hard outer layer of pollen is called intine. |
| Answer» Correct Answer - C | |
| 819. |
Function of filiform apparatus is to :-A. Recognizes the suitable pollen at stigmaB. Stimulate division of generative celllC. Produce nectarD. Guide the entry of pollen tube . |
| Answer» Correct Answer - D | |
| 820. |
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit becauseA. female gametophyte is free and gets dispersed like sedsB. female gametophyte lacks archegoniaC. megaspores posses endosperm and embryo surrounded by seed coatD. embryo develops in female gametophyte which is retained on parent sporophyte . |
| Answer» Correct Answer - D | |
| 821. |
Male gametophyte with least number of cells is present inA. PteriusB. FunariaC. LiliumD. Pinus |
| Answer» Correct Answer - C | |
| 822. |
The following figure shows the A. Multicarpellary syncarpous pistil of PapaverB. Multicarpellary apocarpous gynoecium of MicheliaC. Pentacarpellary syncarpous gynoecium of the MicheliaD. Multicarpellary apocarpous gynoecium of the Papaver |
| Answer» Correct Answer - A | |
| 823. |
Effect of pollen on character of pericarp and seed coat isA. XeniaB. MetaxeniaC. Ruminate endospermD. Chimera |
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Answer» Correct Answer - B `**` Xenia : Effect of pollen grain on endosperm is termed as Xenia. E.g. : Maize `**` Metaxenia : Effect of pollen grain on pericarp or seed coat (or any other character inspite endosperm) is termed as metaxenia. E.g. : Castor. |
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| 824. |
First haploid cell of female gameophyte isA. Functional megasporeB. Microspere mother cellC. Megaspore mother cellD. None of the above |
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Answer» Correct Answer - B First haploid cell of female gametophyte is functional megaspore. |
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| 825. |
Which of the following has proved helpful in preserving pollen of fossilsA. PollenkittB. Cellulosic IntineC. Oil contentD. Sporopollenin |
| Answer» Correct Answer - D | |
| 826. |
Fowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated byA. BeeB. WindC. BatD. Water |
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Answer» Correct Answer - B Flowers which have single ovule in the ovary and are packed into florescence are usually pollinated by wind |
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| 827. |
A dioecious flowering plant prevents bothA. Autogamy and geitonogamyB. Geitonogamy and xenogamyC. Cleistogamy and xenogamyD. Autogamy and xenogamy |
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Answer» Correct Answer - A A dioecious flowering plant prevents both autogamy and geitonogamy. |
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| 828. |
Commelina benghalensis representsA. Chasmo-cleistogamyB. XenogamyC. HeterogamyD. Geitonogamy |
| Answer» Correct Answer - A | |
| 829. |
Removal of anther from the floral bud is calledA. AnthesisB. BaggingC. EmasculationD. Anthectomy |
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Answer» Correct Answer - C Removal of anther from the floral bud is called emasculation. |
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| 830. |
In summer season, Suman want to the market with his father to buy fruits and vegetables. His father purchased two green coconuts to drink coconut water to qench their thirst. Suman curiosly asked his father a botany teacher, the following questions : (i) What is morphological nature of coconut water and what is its nutritive value ? (ii) Besides coconut water , what are other products obtained from coconut tree ? (iii) Which type of reproduction is involved in the formation of endosperm ? |
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Answer» (i) It is liquid endosperm . It is very rich in nutrients , amino acids, vitamins, sugars and growth factors. (ii) It is a source of copra , coconut oil and coir fibre . Besides , its leaves are used for thatching of huts of people in coastal regions. (iii) Endosperm is the product of sexual reproduction. |
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| 831. |
Siphonogamy is characteristics of:A. All spermatophytesB. Only gymnospermsC. Only angiospermsD. Only pteridophytes |
| Answer» Correct Answer - A | |
| 832. |
Name the parts of an angiosperm flower in which development of male and female gametophyte take place. |
| Answer» Male gametophyte develops in microspore inside the pollen grain released from anther. Female gametophyte develops from megaspore inside the ovule. | |
| 833. |
Name the following activities : (a) Removal of anther from the bisexual flower bud to make it a female flower. (b) Covering of such flowers whose anther have been removed to prevent contamination of its stigma with unwanted pollen. (c ) Sprinkling of desired pollen grain over the stigma of such flower. |
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Answer» (a) Emasculation (b) Bagging (c ) Artificial pollination . |
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| 834. |
Name one example for each of the following :(i) A plant in which both male and female sex organs occurs in the same flower . (ii) A plant in which separate male and female flowers are borne on the same individual at different positions. (iii) A cultivated plant in which neither fruits nor seeds are formed. (iv) A species in which the individual plant in either male of female. |
| Answer» (i) Hibiscus rosa-sinensis, (ii) Zea-mays ( Maize), (iii) Sugar cane ,(iv) Date-palm. | |
| 835. |
Essential organ of a flower are:A. Calyx, Corolla, PerianthB. Stamens, GynoeciumC. Lodicules, Bracts, BractiolesD. None of these |
| Answer» Correct Answer - B | |
| 836. |
What we say if a flower has many pistils. |
| Answer» Correct Answer - Multicarpellary | |
| 837. |
Tapetal cells of stamens areA. Diploid unicucleateB. Tetraploid binucleateC. Hexaploid tetranucleateqD. Polyploid multinucleate |
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Answer» Correct Answer - D Tapetal cells of stamens are polyploid multinucleate. |
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| 838. |
Which part of the flower represent female reproductive organ |
| Answer» Correct Answer - Gynoecium | |
| 839. |
Match the following |
| Answer» Correct Answer - 1-D, 2-A, 3-B, 4-C, 5-F, 6-E | |
| 840. |
Assertion : In a microsporangium, the tapetal cells possess tittle cytoplasm and generally have a single prominent nucleus. Reason : During microsporogenesis, the microspore mother cells (M M Cs) undergo mitotic divisions to produce hapliod microspore tetrads.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If both assertion and reason are true but reason is not the correct explanation of assertionC. If assertion is true but reason is falseD. If both assertion and reason are false |
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Answer» Correct Answer - d Tapetum is the innermost wall layer of a microsporangium. It nourishes the developing pollen grains. The tapetal cells enlarge radically and become filled with dense protoplasmic contents as well as nutrients. Tapetal cells are generally multinucleate or their nucleus become polyploid due to endoplodiy. Microsporogenesis refers to the process of formation of haploid microspores mother cell (M MC) or pollen mother cell (PMC) through meiosis (and not mitosis). |
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| 841. |
When a embryo sac develop from a single megaspore called monosporic development |
| Answer» Correct Answer - True | |
| 842. |
Assertion : The method of development of embryo sac from a single functional megaspore is termed as monosporic development. Reason : In monosporic (Polygonum) type of embryo sac development, usually the megaspore which is situated towards micropylar end remains functional.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If both assertion and reason are true but reason is not the correct explanation of assertionC. If assertion is true but reason is falseD. If both assertion and reason are false |
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Answer» Correct Answer - c In monosporic (Polygonum) type of development of embryo sac, only one megaspore situated towards chalazal end remains functional. The remaining three megaspores gradually degenerate and finally disappear. The functional haploid megaspore enlarges in size and by means of three successive mitotic divisions, gives rise to an eight-nucleate embryo sac. This type of embryo sac development occurs in a majority of flowering plants and the common example is Polygonum. |
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| 843. |
Embryo sac is monosporic when it develops fromA. One of the four megaspores of a megaspore mother cellB. Three megaspores of megaspore tetradC. Two functional megasporesD. The megaspore mother cell where meiosis has occurred but cytokinesis does not take place. |
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Answer» Correct Answer - A Embryo sac is monosporic when it develops from one of the four megaspores of a megaspore mother cell. |
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| 844. |
Diameter of the pollen grains is generallyA. `5-10 mu m`B. `10-50 mu m`C. `20-50 mu m`D. `25-50 mu m` |
| Answer» Correct Answer - D | |
| 845. |
Most resistance biological material is Or An organic substance that can withstand enviornmental extremes and cannot be degraded by any enzyme isA. LigninB. CelluloseC. CuticleD. Spropollenin |
| Answer» Correct Answer - D | |
| 846. |
In angiosperms, microsporogenesis and megasporogeneisA. occur in ovuleB. occur in antherC. form gametes without further divisionsD. involve meisosis |
| Answer» Correct Answer - D | |
| 847. |
Parthenocarpic fruits are produced byA. treating plants with PMAB. treating plants with low concentration of auxin and gibberellinsC. removing anthers from flowers before release of pollen grainD. raising plants from vernalised seeds |
| Answer» Correct Answer - B | |
| 848. |
Parthenocarpic fruits can be obtained usig treatment of:A. CytokininsB. ZeatinC. GibberellinsD. X-rays |
| Answer» Correct Answer - C | |
| 849. |
Coconut water from a tender coconut is:A. Free nuclear endospermB. Innermost layers of the seed coatC. Degenerated nucellusD. Immature embryo |
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Answer» Correct Answer - A Coconut water from a tender coconut is free nuclear endosperm. |
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| 850. |
Which one of the following fruits is parthenocarpic?A. BrinjalB. AppleC. JackfruitD. Banana |
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Answer» Correct Answer - D Parthenocarpy is a process of developing fruits without involving fertilisation/seed formation. Therefore, the seedless varieties of economically important fruits like orange, banana, watermelon, lemon, etc. are produced using this technique. This technique involves inducing formation by the application of plant growth hormones such as auxins. |
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