Explain the structure of pollen grain.

Important Questions on Sexual Reproduction in Flowering Plants

HARD

12th Gujarat Board

IMPORTANT

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

Which of the layers of microsporangium shows cells with dense cytoplasm and conspicuous nuclei?

HARD

12th Gujarat Board

IMPORTANT

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

Where do the cleistogamous flowers are produced in Commelina?

MEDIUM

12th Gujarat Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Gujarat Board-2018>Q 3

Hard seed coat or other coverings may affect the seed germination and cause seed dormancy.

HARD

12th Gujarat Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Gujarat Board-2018>Q 4

Describe the structure of ovule in plants.

HARD

12th Gujarat Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Gujarat Board-2018>Q 5

Give the characteristics of anemophilous flowers.

MEDIUM

12th Gujarat Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Gujarat Board-2019>Q 6

Select the correct option for the embryo sac of angiosperm plants.

MEDIUM

12th Gujarat Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Gujarat Board-2019>Q 7

Explain the embryonic development in angiosperm plants. Draw a labelled diagram of the heart-shaped embryo.

EASY

12th Gujarat Board

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 2 - Sexual Reproduction in Flowering Plants>Gujarat Board-2020>Q 8

Pollen grains are well-preserved as fossils because of the presence of _____.