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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.
| 251. |
In double fertilizationA. Two male gametes fuse with two eggsB. one male gamete fuses with the egg and the other fuses with secondary nucleus .C. One male gametes fuses with egg and the other fuses with antipodal .D. one male gamete fuses with anitpodal and the other fuses with diploid nucleus. |
| Answer» Correct Answer - B | |
| 252. |
In angiosperms, pollen tube liberates its male gamets into:A. Central cellB. AntipodalsC. Egg cellsD. Synergids |
| Answer» Correct Answer - D | |
| 253. |
What is the pollen viability of the member of leguminoseae and rosaceae. |
| Answer» Correct Answer - Months | |
| 254. |
Where is the use of pollen bank. |
| Answer» Correct Answer - Crop breeding programmes | |
| 255. |
Identify A, B, C, D, E |
| Answer» Correct Answer - A-Micropyle, B-Micropyler end C-Outer integument, D-Innerintegument, E-Embryosac | |
| 256. |
What is the diameter of pollen grain |
| Answer» Correct Answer - 25-50 micrometer | |
| 257. |
An anther having four microsporocytes shall produce pollen grainsA. 24B. 12C. 8D. 16 |
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Answer» Correct Answer - D `because` 1 microsporocyte/pmc produces =4 pollen grains `therefore 4 microspore cyte/pmc produces `=4xx4=16` pollen grains |
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| 258. |
Identify A, B, C, D, E, F,G |
| Answer» Correct Answer - A-Chalazal/end , B-Antipodal cell, C-Polar nuclei, d-Egg cell, E-Synergid cell, F- Filiform apparatus , G-Micropylar end | |
| 259. |
Pollne pistil interactin isA. chemically metdiated processB. dynamic processC. genetically controlled processD. more than one option is correct |
| Answer» Correct Answer - D | |
| 260. |
Following figure showing pistil identify-A, B, C & D. |
| Answer» Correct Answer - A-Stigma, B-Style, C-Ovary, D-thalamus | |
| 261. |
The basal part of the pistil is__________ |
| Answer» Correct Answer - Ovary | |
| 262. |
Gametogenesis in haploid plants involvesA. Binary fissionB. MeiosisC. MitosisD. Amitosis |
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Answer» Correct Answer - C Gametogenesis in haploid plants involves mitosis. |
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| 263. |
Name the organic materials the exine and latine of an angiosperm pollen grains are made up of. Explain the role of exine. |
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Answer» Exine - Sporopollenin. Intine- Cellulose and pectin . Role - Exine is made of most resistanct organic material. It can withstand high temperature, acid and alkali. |
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| 264. |
Differentiate between the two cells enclosed in a mature male gaemetophyte of an angiosperm. |
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Answer» The two cells enclosed in a mature male gametophyte of an angiosperm are different . In anther of each stamen there are pollen sacs. Within the pollen sacs there are microscope mother cells or microsporocytes. Each microspore by mitosis forms a pollen grain containing one generative cell and one tube cell . When pollination occurs and the pollen grain makes contact with the stigma , the tube cell elongates its cytoplasm forming the pollen tube that grows towards the ovary. |
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| 265. |
Name all the haploid cells present in an unfertilized mature embryo-sac of a flowering plant. Write the total number of cells in it. |
| Answer» In a majority of flowergin plant, one of the magaspores is functional while the other three degenerate . Only the functional megaspore develops into the female gametophyte ( embryo sac ). This method of embryo sac formation from a single megaspore is termed monosporic development. | |
| 266. |
What would be the number of chromosomes in the cells of the aleuron layer in a plant species with 8 chromosomes in its synergids?A. 24B. 32C. 8D. 16 |
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Answer» Correct Answer - A Synergids are two, short-lived, haploid cells lying close to the egg in mature embryo sac of flowering plant ovule. While the endosperm is a triploid tissue formed after triple fusion. Thus, if the synergids have 8 chromosomes, the aleurone layer (part of endosperm) will have just triple of that of chromosomes in the synergids, i.e. 24 chromosomes. |
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| 267. |
The types of flowers which always produce seed even in the absence of pollincatorsA. chasmogamous flowersB. cleistogamoius floweresC. bisexual floweresD. unisexual flowers |
| Answer» Correct Answer - B | |
| 268. |
Microspore tetrad in dicots is usually:A. Linear typeB. Isobilateral typeC. Tetrahedral typeD. T-shaped |
| Answer» Correct Answer - C | |
| 269. |
The number of mitotic generations required to form a mature embryo sac in most of the flowering plants isA. oneB. twoC. threeD. four |
| Answer» Correct Answer - C | |
| 270. |
When a spore mother cell produces more than 4 spores, it refers to:A. PolyspermyB. PolysporyC. PolygamyD. Polyembryony |
| Answer» Correct Answer - B | |
| 271. |
Geitonogamy isA. genetically autogamousB. ecologically atutogamousC. genetically allogamousD. functionally autogamous |
| Answer» Correct Answer - A | |
| 272. |
In anther, the endothecium lies in between:A. Tapetum and archesporiumB. Archesporium and sporsC. Inner layer and tapetumD. Epidermis and inner layer |
| Answer» Correct Answer - D | |
| 273. |
Enzymes and hormones both are synthesized from :A. EndotheciumB. ArchesporiumC. TapetumD. Middle layer |
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Answer» Correct Answer - C Tapetum cells synthesize enzymes nad hormones to help in faster growth and differentiatioin in developing microspores. |
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| 274. |
Endomitosis is often found in the cells of:A. ZygoteB. EndospermsC. TapetumD. Spore mother cells |
| Answer» Correct Answer - C | |
| 275. |
Archesporium refers to:A. Jacket layerB. Sporogenous layerC. Tapetal layerD. Outer most endosperm layer |
| Answer» Correct Answer - B | |
| 276. |
Prothallical cells are not produced in:A. Cycas and pinusB. EphedraC. AngiospermsD. Spermatophytes |
| Answer» Correct Answer - C | |
| 277. |
During fertiliaztion, male gametes are discharged into:A. Egg cellB. Central cellC. AntipodalsD. Degenerated synergids |
| Answer» Correct Answer - D | |
| 278. |
Pollen tubes show:A. Chemotactic movementB. Thermotactic movementC. ChemotropismD. Chemonasty |
| Answer» Correct Answer - C | |
| 279. |
All the events from pollen deposition on the stigma until pollen tubes enter the ovules are together referred to asA. FertilisationB. Double fertilisationC. Pollen-pistil interactionD. Pollination |
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Answer» Correct Answer - C All the events from pollen deposition on the stigma until pollen tubes enter the ovules are together referred to as pollen-pistil interaction. |
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| 280. |
Triple fusion was discovered by:A. LeeuwenhoekB. AmiciC. NawaschinD. None of the above |
| Answer» Correct Answer - A | |
| 281. |
The pollen tubes grow through the solid style by separating their cell through the secretion ofA. lipaseB. proteaseC. amylaseD. pectinase |
| Answer» Correct Answer - D | |
| 282. |
Embryonal tissue contains:A. ChloroplastsB. ChromatophoresC. ChromoplastsD. Leucoplasts |
| Answer» Correct Answer - D | |
| 283. |
External water is not required for fertilization ofA. CryptogamsB. BryophytesC. PetridophytesD. Spermatophytes |
| Answer» Correct Answer - D | |
| 284. |
Self sterility refers to:A. Production of sterile pollensB. Production of absorptive ovulesC. Failure of pollens to germinate on stigma of its own flowerD. Failure of fertilization if the stigma is pollinated by the pollens of other plant |
| Answer» Correct Answer - C | |
| 285. |
Water is not required for the act of fertilization in:A. CryptogamsB. BryophytesC. SpermatophyesD. Pteriodophytes |
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Answer» Correct Answer - C In spermatophytes, siphonogamy occurs where the male gametes are carried through the pollen tube and thus water is not required for the act of fertilization. In bryophytes and pteridophyte, male gametes are always motile and they swim in watery medium, thus water is essential for the act of fertilization. |
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| 286. |
Seeds of which plant were discover during the archeological excavation at king herod place near the Dead sea?A. roseB. lupinusC. phoenixD. agave |
| Answer» Correct Answer - C | |
| 287. |
Most delicate stage in the life cycle of angiosperm where maximum mortality is observed is its:A. Seed stageB. Flowering stageC. Fruiting stageD. Seedling stage |
| Answer» Correct Answer - D | |
| 288. |
Agamospermy is formation of seed:A. Without fertilizationB. Without testaC. Without embryoD. None of these |
| Answer» Correct Answer - D | |
| 289. |
Protandry is found in:A. Hibiscus ros-sinensisB. Abelmoschus esculentusC. Helianthus annuusD. All of the above |
| Answer» Correct Answer - C | |
| 290. |
The thin and continuous wall layer of pollen isA. exineB. intineC. germ poreD. endothecium |
| Answer» Correct Answer - B | |
| 291. |
Read the following statements and find out the incorrect statements. a. Majority of flowering plants use a range of animals as pollinating agents. b. Bees, butterflies, flies, beetles wasps, ants, moth, birds (sunbirds and humming birds) and bats are the common pollinating agents. c. Among the animals, insects particularly bees are the dominant biotic pollinating agents. d. Even larger animals such as some primates (lemurs), arboreal (tree dwelling) rodent, or even reptiles (gecko lizard and garden lizard) have also been reported as pollinators in some species. e. Often flowers of animal pollinated plants are specifically adapted for a particular species of animal.A. a and bB. b and cC. d and cD. None of the above |
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Answer» Correct Answer - D `**` Majority of flowering plants use a range of animals as pollinating agents. `**` Bees, butterflies, flies, beetles, wasps, ants, moth, birds (sunbirds and humming birds) and bats are the common pollinating agents. `**` Among the animals, insects particularly bees are the dominant biotic pollinating agents. `**` Even larger animals such as some primates (lemurs), arboreal (tree dwelling) rodent, or even reptiles (gecko lizard and garden lizard) have also been reproted as pollinators in some species. `**` Often flowers of animal pollinated plants are specifically adapted for a particular species of animal. |
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| 292. |
A large majority of flowering plants are pollinated byA. ButterfliesB. BeesC. SunbirdsD. Beetles |
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Answer» Correct Answer - B A large majority of flowering plants are pollinated by bees. |
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| 293. |
which among the following contributes to pollen wall formation ?A. TapetumB. EndotheciumC. ConnectiveD. Stomium |
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Answer» Correct Answer - A Tapetum contributes to pollen wall formation. |
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| 294. |
A seed have more than one embryo this condition is called as |
| Answer» Correct Answer - Polyembryony | |
| 295. |
Assertion : In the most common type of endosperm development, the PEN undergoes successive nuclear division to give rise to free nuclei. Reason : Embryo develops at the chalazal end of the embryo sac where zygote is situated.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is falseD. If both assertion and reason are false. |
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Answer» Correct Answer - C `**` In the most common type of endosperm development, the PEN undergoes successive nuclear division to give rise to free nuclei. `**` Embryo develops at the micropylar end of the embryo sac where zygote is situated. |
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| 296. |
Identify A,B,C,D |
| Answer» Correct Answer - A-Seed coat, B-Cotyledon , C-Shoot apical meristem , D-Root tip | |
| 297. |
The term is use for fruits which are develop without fertilization |
| Answer» Correct Answer - Parthenocarpic fruits | |
| 298. |
If terminator gene is introduced in a plant, its seeds will be:A. Devoid of cotyledonsB. Devoid of fertility embryoC. Devoid of reserve foodD. Without fruits |
| Answer» Correct Answer - B | |
| 299. |
What is the perisperm |
| Answer» Correct Answer - residual, persistant nucellus | |
| 300. |
Megaspore mother cell originates from :A. Superficial layer of nucellusB. Hypodermal cell of nuclellusC. Inner layer of integumentD. Outer layer of integument |
| Answer» Correct Answer - B | |