With reference to pollination, consider the following statements: 1. It is the transfer of pollen from the stigma to the anther. 2. If pollen lands on the stigma of the same flower, it is called self-pollination. 3. Pollen grains have a tough protective coat to prevent them from drying up. Which of the statements given above is/are correct?

Correct Option The correct option is (c). Explanation Pollination is the biological process in seed plants whereby pollen grains are transferred from the male reproductive structures to the female reproductive structures, enabling fertilization. Statement-wise Analysis - Statement 1 is Incorrect: Pollination is defined as the transfer of pollen grains from the anther (the male part) to the stigma (the female part). The statement incorrectly reverses the direction of transfer. - Statement 2 is Correct: Self-pollination (autogamy) occurs when pollen from the anther is deposited on the stigma of the same flower. If the transfer occurs between different flowers, it is termed cross-pollination. - Statement 3 is Correct: Pollen grains are encased in a tough protective outer layer called the exine, which is composed of sporopollenin. This layer protects the genetic material from high temperatures, strong acids, and desiccation (drying up) during transit. Key Takeaway: Pollination always involves the movement of pollen from the anther to the stigma. Pollen grains possess a resistant protective coat to survive environmental stress during this transfer.

With reference to pollination, consider the… - NCERT Class 7 Science MCQ

NCERT Class 7 Science — Chapter 4: Reproduction in plants

mcqmedium

With reference to pollination, consider the following statements:

It is the transfer of pollen from the stigma to the anther.
If pollen lands on the stigma of the same flower, it is called self-pollination.
Pollen grains have a tough protective coat to prevent them from drying up.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 7 · Page 6

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c).

Explanation

Pollination is the biological process in seed plants whereby pollen grains are transferred from the male reproductive structures to the female reproductive structures, enabling fertilization.

Statement-wise Analysis

Statement 1 is Incorrect: Pollination is defined as the transfer of pollen grains from the anther (the male part) to the stigma (the female part). The statement incorrectly reverses the direction of transfer.
Statement 2 is Correct: Self-pollination (autogamy) occurs when pollen from the anther is deposited on the stigma of the same flower. If the transfer occurs between different flowers, it is termed cross-pollination.
Statement 3 is Correct: Pollen grains are encased in a tough protective outer layer called the exine, which is composed of sporopollenin. This layer protects the genetic material from high temperatures, strong acids, and desiccation (drying up) during transit.

Key Takeaway: Pollination always involves the movement of pollen from the anther to the stigma. Pollen grains possess a resistant protective coat to survive environmental stress during this transfer.

Your note

More from Chapter 4: Reproduction in plants

Which of the following is a correct match of the plant and its vegetative part used for reproduction?

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Consider the following statements regarding the "eyes" of a potato and the "buds" of Bryophyllum: 1. Only potato eyes are vegetative structures, while Bryophyllum buds are reproductive. 2. Potato eyes are located on the stem, while Bryophyllum buds are on the leaf. 3. Both require burial in soil to germinate. Which of the statements given above is/are correct?

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Which of the following sets of plants produces unisexual flowers?

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In a flowering plant, where is the female gamete located prior to fertilisation?

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With reference to the agents of pollination, consider the following statements: 1. Pollen grains carried by wind are usually light and dry. 2. Insects generally avoid flowers and do not carry pollen. 3. Water can act as an agent for carrying pollen grains. Which of the statements given above is/are correct?

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