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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. |
The process of removing stamens from the flower bud during hybridization is calledA. CrossingB. SelfingC. EmasculationD. Caping |
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Answer» Correct Answer - C Removal of stamens from a bisexual flower before anthesis is called emasculation. Emasculation is useful for preventing the self pollination in female parent which is concerned with hybridization. |
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| 252. |
Totipotency is the basic principle ofA. Tissue cultureB. SericultureC. PiscicultureD. Silviculture |
| Answer» Correct Answer - A | |
| 253. |
A. What is callus ? B. What do you understand by totipotency of cell ? Name the scientist who coined the term. |
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Answer» A. An unorganised mass of cells is called callus. It is usually produced by culturing explant in tissue culture laboratories. A superficial tissue developing in woody plants, usually through cambial activity, in response to wounding is also called. This tissue develops for protecting the injured surface. B. Totipotency is ability or capability or capacity of a cell to give rise a complete organism, when cultured in a suitable culture medium at appropriate temperature and aeration conditions. The term totipotency was coined by German Botanist Gottieb Haberlandt in 1902. |
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| 254. |
Totipotency refers toA. capacity to generate genetically identical plantsB. capacity to generate a whole plant from any plant cell/explantC. capacity to generate hybrid protoplastsD. recovery of healthy plants from diseased plants. |
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Answer» Correct Answer - B Totipotency is the capacity to generate a whole plant from any cell or explant. Any part of a plants is taken out and grown in a test tube, under sterile conditions in special nutrient media to regenerate a whole plant by virtue of totipotency. |
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| 255. |
Which of the following should be used as an explant to generate a disease free plant ?A. AntherB. Ovary cellC. Shoot tipD. Young embryo |
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Answer» Correct Answer - C Although the plant is infected with a virus, the meristem (apical and axillary) is free of virus. Hence, one can remove the meristem (shoot tip) and grow it in vitro to obtain virus-free plants. |
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| 256. |
Which of the following enhaces of induces fussion of protoplasts ?A. IAA and kinetinB. IAA and gibberellinsC. Sodium chloride and potassium chlorideD. Polyethylene glycol and sodium nitrate |
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Answer» Correct Answer - D Polyethylene glycol and sodium nitrate enhances or induces fusion of protoplasts. |
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| 257. |
The crops engineered for glyphosate are resistant/tolarant toA. InsectsB. HerbicidesC. FungiD. Bacteria |
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Answer» Correct Answer - B The crop engineered for glyphosate are resistant/tolerant to herbicides. |
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| 258. |
The crops engineered for glyphosate are resistant/tolerant toA. BecteriaB. InsectsC. HerbicidesD. Fungi |
| Answer» Correct Answer - C | |
| 259. |
Production of plant without fertilization is done byA. Vegetative propagationB. TransplantationC. GraftingD. None of these |
| Answer» Correct Answer - A | |
| 260. |
Heterosis requiresA. SelectionB. CrossingC. TransformationD. Mutation |
| Answer» Correct Answer - B | |
| 261. |
Green house crops such as tomatoes and bell pepper produce higher yields. This is due toA. `CO_2` enriched atmosphere leads to higher yieldsB. `CO_2` is a limiting factor to photosynthesisC. Due to diffused light in green houseD. Tomatoes and bell pepper are not `C_3` plants |
| Answer» Correct Answer - A | |
| 262. |
The new varieties of plants are produced byA. Introduction and selectionB. Mutation and selectionC. Selection and hybridizationD. Introduction and Mutation. |
| Answer» Correct Answer - C | |
| 263. |
Coccidiosis in poultry is caused by:A. VirusB. FungusC. Helminth parasiteD. Protozoan |
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Answer» Correct Answer - D In poultry occidiosis is caused by protozoan. |
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| 264. |
Plant breeder who developed the first hybrid wasA. FairchildB. MendelC. SwaminathanD. Protozoan |
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Answer» Correct Answer - A Plant breeder who developed the first hybrid was Fairchild. |
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| 265. |
What do you mean by cloning ? |
| Answer» It is a device to produce vast quantities of strong and healthy plantlets by rapid vegetative multiplication under controlled condition. | |
| 266. |
Give brief account of micropropagation. |
| Answer» Propagation of vast quantities of strong and healthy plantlets by rapid vegetative multiplication under controlled conditions. | |
| 267. |
Wild varieties of plants must be conserved toA. Maintain ecosystemB. feeding wild animalsC. future evolutionD. Incorporate useful traits in future crop varieties |
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Answer» Correct Answer - D Wild varieties of plants must be conserved to incorporate useful traits in future crop varieties. |
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| 268. |
What are intervarietal and interspecific hybridisations ? |
| Answer» Intervarietal hybridisation is a cross between the two varieties of the same species whereas interspecific hybridisation is a cross between the different species of the same genus. | |
| 269. |
List the features in the wild plants selected by man for his own benefit. |
| Answer» (i) Plants that grow rapidly and produce a crop within a season, (ii) Plants which store enough food reserves in their seeds to survive drought. | |
| 270. |
The process of malting of individuals , which are more closely related than the average of the population to which they belong , is called Or Which of the following is not used for crop improvementA. InbreedingB. HybridizationC. HeterosisD. Self breeding |
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Answer» Correct Answer - A Introduction, hybridization and mutations are methods of plant breeding. |
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| 271. |
Aims And Objectives Of Plant Breeding |
| Answer» Plant breeding is mainly concerned with production of plants having desired characters such as higher yeilds, better qualities, resistance to diseases and stresses, etc. | |
| 272. |
Biofortfied rice are enriched in which of the following nutrient ?A. CalciumB. IronC. ProteinD. All of the above |
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Answer» Correct Answer - B Iron fortified rice variety contains over 5 times much Fe. |
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| 273. |
The dwarf varieties of wheat brought from Mexico into India wereA. Sonara-64 and SonalikaB. Sonara-64 and Lerma Roja-64C. Sharbati sonara and Pusa LermaD. Sonalika |
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Answer» Correct Answer - B Sonora-64 and Lerma Rojo-64 is dwarf variety of wheat, which were brought to India, modified through mutations and integrated to Indian Agriculture. |
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| 274. |
Resistance to jassids in cotton and cereal leaf beetles in wheat is due to which of the following morphological characterstics ?A. Solid stemB. Hairy leavesC. Nectarless natureD. Both A and B |
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Answer» Correct Answer - B Hairy leaves in several plants are associated with resistance to insect pests e.g. (i) Resistance to jassids in cotton. (ii ) Cereal leaf beetle in wheat. |
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| 275. |
Aims of plant breeding are to produceA. Disease-free varietiesB. High yielding varietiesC. Early maturing varietiesD. All of the above |
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Answer» Correct Answer - D The aims of plant breeding are increase in yield of seeds, resistance to diseases, insects, pests and earliness or lateness in maturity period or change in maturity behaviour. |
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| 276. |
Resistance to jassides in cotton plants and to cereal leaf beetle in wheat plants is due toA. biochemical charactersB. physiological charactersC. morphological charactersD. none of these |
| Answer» Correct Answer - C | |
| 277. |
A man made allopolypoid cereal crop isA. Hordeum vulgareB. Raphano brassicaC. TriticaleD. Zea mays |
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Answer» Correct Answer - C Allopolyploid means a mixture of two different genetic forms. Intergeneric hybridization of cereal crops i.e. Secale cereale and Triticum froms Triticale (man made) |
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| 278. |
Shakti, Rattan and Protina varieties of maize) are rich inA. lysineB. glycineC. fatsD. carbohydrates. |
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Answer» Correct Answer - A Three varieties of maize namely Shakti, Rattan and Protina have been developed, evaluated and released for cultivation based on being rich in amino acid lysine. Generally, cereal and millet proteins are deficient in lysine and tryptophan amino acids which are called essential amino acids. |
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| 279. |
A plant cell has potential to develop into full plant. This property of the plant cell is calledA. Tissue cultureB. TotipotencyC. PleuripotencyD. Gene cloning |
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Answer» Correct Answer - B Tissue culture technique is based on totipotent nature of plant cell or phenomenon of totipentency , i.e. , each of every plant cell has inherent capacity to develop into complete plant. |
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| 280. |
Which of the following is generally used for induced mutagenesis in crop plantsA. X-raysB. UV (260 nm)C. Gamma rays (from cobalt 60)D. Alpha particles |
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Answer» Correct Answer - C Gamma rays (from cobalt 60) is generally used for induced mutation in crops plants. |
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| 281. |
The use of honeybee isA. to help in pollinationB. production of bees waxC. production of honeyD. all of these |
| Answer» Correct Answer - D | |
| 282. |
Select the correct option to fill up the blanks in the following statements. (i) Controlled breeding experoments are carried out using_____. (ii) In MOET technology, the fertilised eggs at______ cells stages, are recovered and transferred to surrogate mothers. (iii) In MOET technology, the cow produces______eggs instead of one egg. (iv) _______ is an industry devoted to the catching, processing or selling of fish.A. (i) artificial insemination, (ii) 8-32, (iii) 6-8, (iv) FisheriesB. (i) artificial insemination, (ii) 8-32, (iii) 6-8, (iv) SilvicultureC. (i) artificial insemination, (ii) 6-8, (iii) 8-32, (iv) PiscicultureD. (i) artificial insemination, (ii) 4-8, (iii) 8-32, (iv) Fisheries |
| Answer» Correct Answer - A | |
| 283. |
Which part of the tobacco plant is infected by Meloidogyne incognita?A. LeafB. StemC. RootD. Flower |
| Answer» Correct Answer - C | |
| 284. |
The centre of origin of wheat isA. South-east AsiaB. south-west AsiaC. Asia Minor and AfganistanD. None of these |
| Answer» Correct Answer - B | |
| 285. |
Embryo culture is used for :A. establishing suspension cultureB. recovery of interspecific hybridisationC. somatic hybridisationD. haploid production |
| Answer» Correct Answer - B | |
| 286. |
The tetraploid ancestor of the modern wheat is :A. Triticum monococcumB. Triticum durumC. Aegilops speltoidesD. Aegilops squarrosa |
| Answer» Correct Answer - B | |
| 287. |
Write the full forms of the following (a) SCP (b) IARI |
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Answer» Correct Answer - (a) Single Cell Protein (b) Indian Agricultural Research Institute |
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| 288. |
Name the methods employed in animals breeding |
| Answer» Correct Answer - Inbreeding, Outbreeding, Cross breeding, intersepcific hybridization, Artificial insemination, MOET | |
| 289. |
Multiple ovulation embryo transfer is the best method employed in animals breeding. Why ? |
| Answer» Correct Answer - because it results in the development of superior traits of both the breeds and the progeny produced are fertile and there is no inbreeding depression | |
| 290. |
Hisardale has been developed byA. out-crossingB. interspecific hybridisationC. cross breedingD. interaspecific hybridisation |
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Answer» Correct Answer - C Hisaradale have been developed by cross breeding. |
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| 291. |
Given flow chart represents different steps pf MOET. Study the flow chart carefully and select the correct answer for (1),(2) and (3). A. 1-FSH, 2-super ovulation due to induced follicular maturation, 3-Transfer to surrogate mother.B. 1-LH, 2-super ovulation due to induced follicular maturation, 3-Transfer to surrogate motherC. 1-Progesterone, 2-Super ovulation due to induced follicular maturation, 3-Transfer to surrogate motherD. 1-FSH, 2-Transfer to surrogate mother, 3-Super-ovulation due to induced follicular maturation |
| Answer» Correct Answer - A | |
| 292. |
Multiple ovulation embryo tranfer technology is related toA. transfer of super embryoB. transfer of super eggsC. super ovulation and embryo trasnferD. both (a) and (b) |
| Answer» Correct Answer - C | |
| 293. |
In which , male and female animals of two different related species are mated ?A. inbreedingB. Out-crossingC. Cross-breedingD. interspecific hybridisation |
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Answer» Correct Answer - D Interspecific hybridisation : crossing between male and female animals of two different related species. In some cases the properly may combine desirable features of both the parents and may be of considerable economic value e.g. the mule. |
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| 294. |
Which amongst the following is used in raising super milk cows ?A. Artificial insemination with pedigree bullB. Embryo transplanatationC. Superovulation of high yielding cowD. All of the above |
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Answer» Correct Answer - D Artificial insemination with pedigree bull, embryo transplantation and superovultation of high yielding cow are used in raising super-milk cows. |
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| 295. |
MOET is a progreamme that is used to increase:A. BiomassB. herd sizeC. YieldD. Disease resistance |
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Answer» Correct Answer - B MOET is a programme that is used to increase herd size. |
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| 296. |
Which is the most common species of honeybee reared in hives? |
| Answer» Correct Answer - Apis indica | |
| 297. |
A . . . . . . . . . is produced from a cross between female horse (mare) and male donkey. |
| Answer» Correct Answer - mule | |
| 298. |
Present day many crops are the result of _________ |
| Answer» Correct Answer - Domestication in ancient times | |
| 299. |
Assertion.Oue present day crop plants are entirely different from their ancestors. Reason. Almost all our present day crops are result of selections carried out by the prehistoric human beings.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 but the Reason is false.D. If both Assertion and Reason are false. |
| Answer» Correct Answer - A | |
| 300. |
Hardening is tissue culture isA. Keeping at `30-50^@`C temperature for about 30 minutesB. Acclimatisation of tissue culture plants slowly before growing in the fieldC. Plunging the vials into water at `37-40^@C`D. None of the above |
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Answer» Correct Answer - B The acclimatisation of plant formed by tissue culture before growing in the field to make it strong to adapt in new environment. |
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