MCQOPTIONS
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MCQOPTIONS
This section includes 365 Mcqs, each offering curated multiple-choice questions to sharpen your Agriculture knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
In meiosis homologous chromosomes separate from each other in ______________________? |
| A. | metaphase I |
| B. | Auaphase I |
| C. | Metaphase II |
| D. | Anaphase II |
| Answer» C. Metaphase II | |
| 202. |
In maize source of high lysine is___________________? |
| A. | Opaque 2 |
| B. | Proline |
| C. | Gang as |
| D. | African tall |
| Answer» B. Proline | |
| 203. |
In lucern, toxic substance is found in_____________________? |
| A. | Saponin |
| B. | Coumarin |
| C. | Neurotoxin |
| D. | All the above |
| Answer» B. Coumarin | |
| 204. |
In line x tester cross each male is crossed with____________________? |
| A. | Different sets of females |
| B. | Few females in a set |
| C. | Same sets of females |
| D. | All the above |
| Answer» D. All the above | |
| 205. |
In Incern, resistance to spotted aphid is associated with__________________? |
| A. | low sinigen in leaves |
| B. | High saponin in leaves |
| C. | High DIMBOA in leaves |
| D. | High silicant content |
| Answer» C. High DIMBOA in leaves | |
| 206. |
In half diallel, total crosses among parents are equal to___________________? |
| A. | P (P-1)/2 |
| B. | P (P-1) |
| C. | P (P+1)/2 |
| D. | P2 |
| Answer» D. P2 | |
| 207. |
In green vegetables, the limiting amino acids is__________________? |
| A. | Methionine |
| B. | Arginine |
| C. | Lysine |
| D. | Trytophan |
| Answer» B. Arginine | |
| 208. |
In forage, crops, ideal plant type consists of ______________________? |
| A. | Tall, leafy, high leaf/stem ratio |
| B. | Dwarf stature |
| C. | Late resistance to disease |
| D. | Dwarf, late green |
| Answer» B. Dwarf stature | |
| 209. |
In crop improvement programmed haploids are of great importance because they__________________? |
| A. | Are useful in studies on meiosis |
| B. | Give homozygous lines following diplodization |
| C. | Grow better under adverse conditions |
| D. | Require only about half the amount of chemical fertilizers compared to diploids |
| Answer» C. Grow better under adverse conditions | |
| 210. |
In cotton, jassids have non preference for______________________? |
| A. | Fregobract |
| B. | Okra leaves |
| C. | Smoothness leaves |
| D. | Hairiness of leaves |
| Answer» E. | |
| 211. |
In cereals limiting amino acids are________________? |
| A. | Threonine |
| B. | Lysine |
| C. | Methionine |
| D. | a and b |
| Answer» E. | |
| 212. |
In case of incomplete dominance in the f2 generation_______________________? |
| A. | Ratio of phenotypes is 3:1 |
| B. | Ratio of genotypes is 3:1 |
| C. | Phenotypic ratio corresponds to the genotypic ratio |
| D. | None of the above |
| Answer» D. None of the above | |
| 213. |
In bisexual flowers when the gynoecium’s mature earlier than androecium’s it is called as _______________________? |
| A. | Autogamy |
| B. | Heterogamy |
| C. | Protandy |
| D. | Protogyny |
| Answer» E. | |
| 214. |
In bhindi, production of foundation seed needs and isolation distance_________________? |
| A. | 100 meters |
| B. | 50 meters |
| C. | 200 meters |
| D. | 3 meters |
| Answer» D. 3 meters | |
| 215. |
In barley, resistance to cereal leaf beetle is associated with_________________? |
| A. | High aspartic acid |
| B. | Waxiness of leaves |
| C. | High silica content |
| D. | High benzol alcohol |
| Answer» C. High silica content | |
| 216. |
In allogamous species, a true breeding line obtained by continuous inbreeding is__________________? |
| A. | Hybrid |
| B. | Top cross |
| C. | Poly cross |
| D. | Inbred |
| Answer» E. | |
| 217. |
In a population gene frequencies remain constant when there is_________________? |
| A. | Iubreeding |
| B. | Out breeding |
| C. | Random mating |
| D. | Selective mating |
| Answer» D. Selective mating | |
| 218. |
In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________? |
| A. | Dominant lethal genes in heterozygous individuals |
| B. | Dominant lethal genes in homozygous individuals |
| C. | Dominant epistasis |
| D. | None of the above |
| Answer» C. Dominant epistasis | |
| 219. |
If two opposite alleles come together, and one of the two finds expression and mask the other in he body this facts is explained as_________________? |
| A. | Law of dominance |
| B. | Law of segregation |
| C. | Law of limiting factors |
| D. | Law of inheritance |
| Answer» B. Law of segregation | |
| 220. |
If the offspring of F, (blue) is crossed with white male parent the result will be______________________? |
| A. | All blue |
| B. | All white |
| C. | All black |
| D. | Half blue and half white |
| Answer» E. | |
| 221. |
If the leaf cells have eight chromosomes it is mostly likely that__________________? |
| A. | Gametes will have 8 chromosomes |
| B. | Gametes will have 4 chromosomes |
| C. | Zygote will have 4 chromosomes |
| D. | Zygote will have 16 chromosomes |
| Answer» C. Zygote will have 4 chromosomes | |
| 222. |
If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosmic is_________________? |
| A. | 12 |
| B. | 24 |
| C. | 22 |
| D. | 23 |
| Answer» E. | |
| 223. |
If the frequency of a dominant phenotype in a stable population in 75% the frequency of the dominant allele in that population is____________________? |
| A. | 50% |
| B. | 75% |
| C. | 25% |
| D. | 40$ |
| Answer» B. 75% | |
| 224. |
If the cell of an organism (heterozygous) for two pairs of genes represented by Aa, Bb, undergoes meiosis then the possible genotype of gametes are________________? |
| A. | AB, ab |
| B. | Ab, ab |
| C. | AB, Ab, aB, ab |
| D. | Data insufficient |
| Answer» D. Data insufficient | |
| 225. |
If diploid chromo me number in flowering plant is 8 then 4 chromosomes will be present in_________________? |
| A. | Endosperm cell |
| B. | Leaf cells |
| C. | Cotyledonary cell |
| D. | Synergids |
| Answer» E. | |
| 226. |
If a pure tall plant is crossed with a pure dwarf one, the ratio of tall pure dwarf in the F 2 generation after selling F1 plant will be___________________? |
| A. | 1:1 |
| B. | 1:2 |
| C. | 2:1 |
| D. | 3:1 |
| Answer» B. 1:2 | |
| 227. |
If a plant is heterozygousand is designated (BbMm)and produces two kinds of gametes either (BM)or (bm), then the possibility of (bm) gametes fertilizing either (BM) or (bm) is_________________? |
| A. | Half |
| B. | 0/1 |
| C. | 1/1 |
| D. | 1/4 |
| Answer» B. 0/1 | |
| 228. |
If a plant heterozygous for tallness is selfed, f2 feneration has both tall and dwarf plants. this proves the principle of__________________? |
| A. | Dominance |
| B. | Segregation |
| C. | Independent assortment |
| D. | Incomplete dominance |
| Answer» C. Independent assortment | |
| 229. |
If a heterozygous tall plant is crossed with a homozygous dwarf plant the proportion of dwarf progerry will be__________________? |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | 100% |
| Answer» C. 75% | |
| 230. |
If a haploid chromosome number of a gymnosperm is 12 the chromosome in its endosperm will be__________________? |
| A. | 6 |
| B. | 12 |
| C. | 24 |
| D. | 36 |
| Answer» C. 24 | |
| 231. |
Ieucaena lencocephala is a popular tree for______________________? |
| A. | Beautification |
| B. | Seasonal fruit |
| C. | Medicinal plant |
| D. | Nutritive forage |
| Answer» E. | |
| 232. |
ICARDA is located at___________________? |
| A. | Columbia |
| B. | Tamil Nadu |
| C. | Syria |
| D. | None of the above |
| Answer» D. None of the above | |
| 233. |
How many type of DNA are_________________? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 234. |
How many times mitotic divisions must occur in a cell of the root tip to form 256 cels___________________? |
| A. | 8 |
| B. | 32 |
| C. | 64 |
| D. | 120 |
| Answer» B. 32 | |
| 235. |
How many mitouc divisions will take place to produce 512 cells from a single parent cell_________________? |
| A. | 9 |
| B. | 256 |
| C. | 158 |
| D. | 511 |
| Answer» E. | |
| 236. |
Homozygous population include_________________? |
| A. | Inbreed lines |
| B. | Multi lines |
| C. | Pure lines |
| D. | All the above |
| Answer» E. | |
| 237. |
High values of genetic advance are indicative of____________________? |
| A. | Dominance gene action |
| B. | Additive gene action |
| C. | non-additive gene action |
| D. | Partial dominance gene action |
| Answer» E. | |
| 238. |
Heterosis can be fixed by___________________? |
| A. | Apomixis |
| B. | Polyploidy |
| C. | Asexual reproduction |
| D. | All the above |
| Answer» E. | |
| 239. |
Heterosis results due to____________________? |
| A. | Dominance |
| B. | Overdominance |
| C. | Epistasis |
| D. | All the above |
| Answer» E. | |
| 240. |
Heterosis can be fully exploited in the form of_____________________? |
| A. | Composites |
| B. | Hybrids |
| C. | Multi lines |
| D. | Synthetics |
| Answer» C. Multi lines | |
| 241. |
Heterobeltiosis is estimated over the___________________? |
| A. | Better parent |
| B. | Mid parent |
| C. | Standard parent |
| D. | Popular variety |
| Answer» B. Mid parent | |
| 242. |
Herkogamy is found in___________________? |
| A. | Barley |
| B. | Berseen |
| C. | Lucrene |
| D. | Alfalfa |
| Answer» E. | |
| 243. |
Hereditary variations in plants have been produced by the use of________________? |
| A. | DDT |
| B. | X-rays |
| C. | Gibberrellic acid |
| D. | Auxins |
| Answer» D. Auxins | |
| 244. |
Heat, cold and frost resistance ideotype have been developed in_____________________? |
| A. | Cereals |
| B. | Pulses |
| C. | Millet |
| D. | None of the above |
| Answer» E. | |
| 245. |
Headquarter of union for the protection of new plant varieties is in__________________? |
| A. | Thailand |
| B. | USA |
| C. | Den nark |
| D. | Switzerland |
| Answer» E. | |
| 246. |
haploids are better for mutation studies because in them all the mutations whether recessive or dominant are expressed as_______________? |
| A. | There are many alleles of each gene in each call |
| B. | There are two alleles of each gene in each cell |
| C. | There is only one alleles of each gene present in each cell |
| D. | Non3e4 of the above |
| Answer» D. Non3e4 of the above | |
| 247. |
Haploid plants have been produced by another culture in tomato by_________________? |
| A. | Greshof and Doy (1972) |
| B. | Tyagi and Prasad (1965) |
| C. | Mehta and Upadhya (1960) |
| D. | Singh (1960) |
| Answer» B. Tyagi and Prasad (1965) | |
| 248. |
Gynandromorphy in Drosophila because of_________________? |
| A. | Loss of X-chromosome |
| B. | Kappa particles |
| C. | inheritance |
| D. | Gain of Y-chromosome |
| Answer» D. Gain of Y-chromosome | |
| 249. |
Gradual reduction on genetic variability due to elimination of various () is called_______________________? |
| A. | Centers of diversity |
| B. | Land races |
| C. | Genetic erosion |
| D. | Genetic diversity |
| Answer» D. Genetic diversity | |
| 250. |
Global gene pool rice is maintained at_________________? |
| A. | China |
| B. | IRRI Philippines |
| C. | Mexico |
| D. | None of the above |
| Answer» C. Mexico | |