Observe the diagram of the young anther given below: Identify the parts labelled as A, B, C and D.

In the given transverse section of developing anther, the different layers are Epidermis, Endothecium, Middle layers and tapetum. These are labelled as follows:

Observe the diagram of the young anther given below: Which layer nourishes the developing pollen grain.

Tapetum (labelled as D) is the innermost wall layer that comprises a single layer of cells. This layer provides nourishment for the process of microsporogenesis and for the maturation of pollen grains. The cells of this layer can be uninucleated, binucleated or multinucleated and have dense cytoplasm.

Observe the diagram of the young anther given below: Which layer nourishes the developing pollen grain.

Tapetum (labelled as D) is the innermost wall layer that comprises a single layer of cells. This layer provides nourishment for the process of microsporogenesis and for the maturation of pollen grains. The cells of this layer can be uninucleated, binucleated or multinucleated and have dense cytoplasm.

Observe the diagram of the young anther given below: Identify the parts labelled as A, B, C and D.

In the given transverse section of developing anther, the different layers are Epidermis, Endothecium, Middle layers and tapetum. These are labelled as follows:

E M B I B E

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Kerala Board-2020>Q 10

MEDIUM

12th Kerala Board

IMPORTANT

Earn 100

Define the following term:

Xenogamy

Important Questions on Sexual Reproduction in Flowering Plants

MEDIUM

12th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Kerala Board-2018>Q 1

Synergids have special cellular thickenings at the micropylar end. Write the name and function of this structure.

MEDIUM

12th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Kerala Board-2018>Q 2

In Angiosperms, the female gametophyte is known as the embryo sac. Explain its development.

MEDIUM

12th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Kerala Board-2019>Q 3

The early stages of embryo development are similar in both dicots and monocots. However, mature embryos have differences. Write two major differences between dicot embryo and monocot embryo.

HARD

12th Kerala Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Kerala Board-2019>Q 5

Observe the diagram of the young anther given below:

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