Class XII · Biology practice

Sexual Reproduction in Flowering Plants MCQs

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501 questions in this collection · Page 18 of 51

Question 171 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

The dormant state of a seed is characterized by:

The general metabolic activity of the embryo slows down. The embryo may enter a state of inactivity called dormancy.

Question 172 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

The wall of the fruit is called:

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

Question 173 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Strawberry is a false fruit because:

In a few species such as apple, strawberry... the thalamus also contributes to fruit formation. Such fruits are called false fruits.

Question 174 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

A banana is an example of:

Parthenocarpic fruits. Banana is one such example.

Question 175 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Which orchid fruit contains thousands of tiny seeds?

Orchid fruits are one such category and each fruit contain thousands of tiny seeds.

Question 176 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Nucellar polyembryony is common in:

More often, as in many Citrus and Mango varieties... develop into the embryos.

Question 177 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Use of apomictic seeds in agriculture is beneficial because:

If these hybrids are made into apomicts, there is no segregation of characters... farmers can keep on using the hybrid seeds.

Question 178 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

Which part of the stamen is attached to the thalamus?

The proximal end of the filament is attached to the thalamus or the petal.

Question 179 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

The anther is generally:

A typical angiosperm anther is bilobed.

Question 180 of 501

📘 CLASS XII

Sexual Reproduction In Flowering Plants

How many microsporangia are found in a typical dithecous anther?

The anther is a four-sided (tetragonal) structure consisting of four microsporangia.

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