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Hereditary and Variation MCQs for NEET — Botany Questions with Answers

Practice free Hereditary and Variation (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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How many true breeding pea plant varieties had been selected by Mendel?

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Explanation

NCERT Page No. 70

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A true-breeding plant line can be obtained by

Cross pollination

Self pollination

Continuous Cross pollination

Continuous Self pollination

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Explanation

NCERT Page No. 70

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How many pairs of contrasting traits studied by Mendel were related to pod?

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Explanation

NCERT Page No. 70

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Which of the following does not contribute to Mendel’s success?

Large sampling size

Statistical analysis

Performed experiments on single variety of pea

Performed experiments on successive generations

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Explanation

NCERT Page No. 70

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“Filial 1 progeny” refers to

First pure breed

First offspring

First hybrid generation

Second hybrid generation

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Explanation

NCERT Page No. 71

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How many laws of Mendel are based on monohybrid cross?

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Explanation

NCERT Page No. 75

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Gregor Mendel is known for

Species concept

Hybridisation experiments

Discovery of chromosomes

Experiments on maize plant

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Explanation

NCERT Page No. 70

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A cross between tall and dwarf plant was performed and 120 offspring were produced in which 90 plants were tall and 30 were dwarf. Find out the genotype of their parents.

Tt and TT

Tt and Tt

TT and tt

tt and tt

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Explanation

NCERT Page No. 73

From diagram of Monohybrid cross on page no.73

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A cross between tall pea plant and its recessive parent is known as

Back cross

Test cross

Recessive cross

Dominant cross

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Explanation

NCERT Page No. 74

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What will be the genotype of parental plants if they produced 25 AA : 48 Aa : 26 aa

AA and AA

AA and aa

Aa and Aa

aa and aa

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Explanation

NCERT Page No. 74

Given ratio is 25 AA : 48 Aa : 26 aa equivalent to 1 : 2 : 1 which is a genotypic ratio of monohybrid cross.

Thus parental genotype will be – Aa x Aa.

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