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Sexual Reproduction in Flowering Plants MCQs for NEET — Botany Questions with Answers

Practice free Sexual Reproduction in Flowering Plants (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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The aquatic plant in which pollination is not carried out by water is:

Vallisneria

Water lily

Zostera

Hydrilla

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Explanation

Read page 29, XII NCERT

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Dioecy in plants prevents:

Autogamy but not geitonogamy

Geitonogamy but not autogamy

Both autogamy and geitonogamy

Neither autogamy nor geitonogamy

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Explanation

Read page 31, XII NCERT

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The central cell in the embryo sac, after triple fusion, becomes:

Primary endosperm cell

Endosperm

Embryo

Zygote

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Explanation

Read page 34, XII NCERT

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Epicotyl has a shoot apex and a few leaf primordial enclosed in a hollow foliar structure called as the:

Coleoptile

Coleorhiza

Scutellum

Perisperm

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Explanation

Read page 36, XII NCERT

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The micropyle remains as a small pore in the seed coat. During germination, this facilitates entry of:

I. Oxygen

II. Water

Only I

Only II

Both I and II

Neither I nor II

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Explanation

Read page 36, XII NCERT

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Why do seeds need water to germinate?

Following hydration, enzymes break down stored food and make it available for the embryo.

Water provides energy.

Water activates the chlorophyll molecules so that photosynthesis can begin.

Water dissolves the minerals in the soil so that they become available to the seed.

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Explanation

Hint: Water has something to do with enzyme

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Genetic self-incompatibility tends to increase

pollen dispersal

inbreeding

pollination

outcrossing

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Explanation

Hint: Self-incompatibility would not allow a related pollen to fertilize the female gamete.

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The embryo of a grass seed is enclosed by two protective sheaths, a(n) _________, which covers the young shoot, and a(n) __________, which covers the young root.

plumule; radical

hypocotyl; picotyls

coleoptile; coleorhiza

scutellum; replum

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Explanation

Read page 36, XII NCERT

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The intine of the pollen grain is a:

Thick and discontinuous layer made of sporopollenin

Thick and continuous layer made of sporopollenin

Thin and discontinuous layer made of cellulose and pectin

Thin and continuous layer made of cellulose and pectin

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Explanation

Read page 23, XII NCERT

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Female flowers remain submerged in water and the pollen grains are released inside the water in:

Sea grasses

Vallisneria

Water lily

Water hyacinth

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Explanation

Read page 29, XII NCERT

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