Sexual Reproduction In Flowering Plants Mock Tests

22 questions available

Sexual Reproduction In Flowering Plants Mock Test 1

Questions: 22

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Class 12 Biology

Apomixis in flowering plants is significant for agricultural purposes primarily because it:

A Allows plants to produce seeds without fertilization, preserving heterozygous traits across generations

B Enables plants to produce larger flowers through polyploidy

C Increases the genetic diversity within a population through asexual reproduction

D Reduces the time required for seed germination compared to sexual reproduction

Class 12 Biology

Geitonogamy is the transfer of pollen grains from the anther to the stigma of:

A Another flower of the same plant

B The same flower

C A flower on a different plant of the same species

D A flower of a different species

Class 12 Biology

Polyembryony refers to the presence of:

A Multiple pollinators visiting the same flower

B More than one embryo within a single seed

C Multiple ovules in a single ovary

D Multiple flowers on one inflorescence

Class 12 Biology

In a typical angiosperm anther, the tapetum is responsible for:

A Performing meiosis to produce microspores

B Providing nutrition to developing pollen grains

C Forming the outermost protective layer

D Determining the time of pollen release

Class 12 Biology

Self-incompatibility in flowering plants is a mechanism that primarily prevents:

A Self-fertilization by blocking pollen germination or pollen tube growth on the same flower or plant

B Cross-pollination by other insects or wind vectors

C Fertilization between species with different chromosome numbers

D Polyembryony from multiple pollen grains entering the same ovule

Class 12 Biology

In a fertilised angiosperm ovule, the correct ploidy levels are:

A Zygote — 2n, Endosperm — 3n, Antipodals — n

B Zygote — 3n, Endosperm — 2n, Antipodals — n

C Zygote — 2n, Endosperm — 2n, Antipodals — 2n

D Zygote — n, Endosperm — 3n, Antipodals — n

Class 12 Biology

Which layer of the anther produces the male gametophyte?

A Epidermis

B Endothecium

C Middle layer

D Tapetum

Class 12 Biology

Apomixis in flowering plants is best described as:

A Sexual reproduction that produces genetically variable offspring

B Asexual reproduction that produces seeds without fertilisation

C Vegetative propagation through modified stems

D Self-pollination within the same flower

Sexual Reproduction In Flowering Plants Mock Tests

Sexual Reproduction In Flowering Plants Mock Test 1

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