GPB MCQ Quiz 157 for ICAR JRF/SRF/ARS Exam Preparation

The most common method of hybridization for wheat is

A) Hot water dips

B) Gogo method

C) Open stigma

D) Floral dip

Explanation: The Gogo method is the most common hybridization technique used in wheat breeding.

Most effective induced mutagenic agents are?

A) Gamma radiations

B) X-radiation

C) UV rays

D) Neutrons

Explanation: X-rays are considered among the most effective physical mutagenic agents used in plant breeding.

Adventitious embryony occurs in?

A) Mango

B) Jack fruit

C) Guava

D) Banana

Explanation: In mango, nucellar tissue can form embryos directly, leading to adventitious embryony.

The main objective of plant breeding is?

A) Domestication

B) Improvement

C) Collection

D) Introduction

Explanation: The main objective of plant breeding is improvement of crop plants in terms of yield, quality, and resistance.

Dihybrid ratio 9:3:3:1 in F2, results due to independent assortment of?

A) Genes

B) Chromosomes

C) Genes & Chromosomes

D) Alleles

Explanation: The 9:3:3:1 ratio in a dihybrid cross results from the independent assortment of chromosomes during meiosis.

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