agriculture MCQs – Page 59

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

1161. Cytoplasmic sterility is govemed by________________________?
comments icon0

A. Nuclear genes

B. Monoalleleic genes

C. Plasma genes

D. None of the above

1162. The term micro and macro environment was given by___________________?
comments icon0

A. Robinson (1948)

B. Comstock and Moll (1963)

C. Lemer (1954)

D. Perkins (1971)

1163. Dee-Geo-Woogen is the source of dwarfing gene in___________________?
comments icon0
A. Rice

B. Wheat

C. Maize

D. Sorghum

1164. Concept of combining ability as measure of gene action was first proposed by___________________?
comments icon0

A. Cavalli (1952)

B. Mather (1956)

C. Sprague and Tatum (1942)

D. Wright (1951)

1165. In cereals limiting amino acids are________________?
comments icon0

A. Methionine

B. Lysine

C. a and b

D. Threonine

1166. A healthy plant not selling seed may be due to____________________?
comments icon0
A. Male sterility

B. Female sterility

C. All the above

D. Self incompatibility

1167. Split gene was first reported in___________________?
comments icon0
A. Cluckens

B. Drosoplulla

C. All the above

D. Pea

1168. Erucic acid is found is_____________________?
comments icon0

A. Soybean

B. Mustard

C. Safflower

D. Til

1169. Where would you look for active cell division in a plant _____________________?
comments icon0
A. Tips of stem & roots

B. Cortex cells

C. Pith cells

D. Internodes regions

1170. Tea, coffee and mango seeds can not be converted in seed banks because they drastic loss in viability with decrease in moisture content below.___________________?
comments icon0

A. 20%

B. 12%

C. 15%

D. 18%

1171. If the frequency of a dominant phenotype in a stable population in 75% the frequency of the dominant allele in that population is____________________?
comments icon0

A. 40$

B. 25%

C. 50%

D. 75%

1172. Organism arise from existing forms by genetic variations is called_________________?
comments icon0

A. Hybridization

B. Genetics

C. Genetics

D. Mutation

1173. Ratio of additive variance to phenotypic variance is called___________________?
comments icon0

A. Co-heritability

B. Genetic gain

C. Heritability (broad sense)

D. Heritability (narrow sense)
1174. Heterobeltiosis is estimated over the___________________?
comments icon0
A. Better parent

B. Mid parent

C. Standard parent

D. Popular variety

1175. In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?
comments icon0

A. Dominant lethal genes in heterozygous individuals

B. Dominant lethal genes in homozygous individuals

C. Dominant epistasis

D. None of the above

1176. Self pollination is associated with__________________?
comments icon0
A. Homogamy

B. Dichogamy

C. Chasmogamy

D. Herkogamy

1177. Who arrang the following associated with genetic engineering___________________?
comments icon0

A. Crick

B. Koruna

C. Watson

D. Morgan

1178. Edible part of orange is__________________?
comments icon0
A. Multicelled endocarpic hair

B. Unexcelled endocarp hair

C. Multicelled placental hairs

D. Unicelled placenta hairs

1179. Norine 10 is the source of dwarfing gene in________________?
comments icon0

A. Barley

B. Wheat

C. Rice

D. Oat

1180. Year 1900 was significant for geneticists due to__________________?
comments icon0
A. Rediscovery of Mendels

B. Discovery of gene

C. Principles of linkage

D. heredity theory