Class XII · Biology practice

Sexual Reproduction in Flowering Plants MCQs

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501 questions in this collection · Page 30 of 51

Question 291 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Seeds that retain endosperm at maturity are called:

Albuminous seeds retain a part of endosperm as it is not completely used up during embryo development.

Question 292 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

The wall of the fruit is technically called the:

The wall of the ovary develops into the wall of fruit called pericarp.

Question 293 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Which hormone can be applied to induce parthenocarpy?

Parthenocarpy can be induced through the application of growth hormones.

Question 294 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

A typical angiosperm embryo sac is formed from:

This method of embryo sac formation from a single megaspore is termed monosporic development.

Question 295 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

The central cell of the embryo sac contains:

The large central cell... has two polar nuclei.

Question 296 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Wind pollinated flowers usually have:

Wind-pollinated flowers often have a single ovule in each ovary.

Question 297 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

In Vallisneria, the male flowers/pollen are released:

The male flowers or pollen grains are released on to the surface of water.

Question 298 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Which of the following plants provides a safe place for the moth to lay eggs?

In some species floral rewards are in providing safe places to lay eggs; an example is that of the tallest flower of Amorphophallus.

Question 299 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Continued self-pollination results in:

Continued self-pollination result in inbreeding depression.

Question 300 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Which outbreeding device prevents both autogamy and geitonogamy?

In several species such as papaya... (dioecy). This condition prevents both autogamy and geitonogamy.

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