Post-Fertilisation: Structure and Events
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341958 Correct statements are :
I. In over 60 percent of angiosperms, generative cell divides inside pollen tube after pollination
II.
Parthenium
that came into India as a contaminant with imported rice has become ubiquitous in occurrence and causes pollen allergy
III. Pollen grains are rich in nutrients and so pollen consumption has been claimed to increase the performance of atheletes and race horses
IV. In some angiospermic families like Rosaceae Solanaceae and Leguminosae pollen lose viability within 30 minutes
V. Pollen banks and seed banks are good insitu conservation strategies

1 I and III
2 II and IV
3 III and IV
4 I and V
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341959 Pollen grains can be preserved as fossil because

1 They are small in size
2 They are made up of cellulose
3 They are made up of strong material
sporopollenin
4 They exhibit a fascinating array of
pattern and design
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341960 Each cell of microspore tetrad is

1 Only diploid (2n)
2 Only haploid (n)
3 Some haploid (n) and some diploid (2n)
4 Sometimes (3n)
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341961 When pollen grain is shed at 3-celled stage, name the cells it contains.

1 1 vegetative cell and 2 male gametes
2 2 vegetative cells and 1 male gamete
3 2 generative cells and 1 male gamete
4 2 male gametes and 1 generative cell
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341958 Correct statements are :
I. In over 60 percent of angiosperms, generative cell divides inside pollen tube after pollination
II.
Parthenium
that came into India as a contaminant with imported rice has become ubiquitous in occurrence and causes pollen allergy
III. Pollen grains are rich in nutrients and so pollen consumption has been claimed to increase the performance of atheletes and race horses
IV. In some angiospermic families like Rosaceae Solanaceae and Leguminosae pollen lose viability within 30 minutes
V. Pollen banks and seed banks are good insitu conservation strategies

1 I and III
2 II and IV
3 III and IV
4 I and V
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341959 Pollen grains can be preserved as fossil because

1 They are small in size
2 They are made up of cellulose
3 They are made up of strong material
sporopollenin
4 They exhibit a fascinating array of
pattern and design
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341960 Each cell of microspore tetrad is

1 Only diploid (2n)
2 Only haploid (n)
3 Some haploid (n) and some diploid (2n)
4 Sometimes (3n)
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341961 When pollen grain is shed at 3-celled stage, name the cells it contains.

1 1 vegetative cell and 2 male gametes
2 2 vegetative cells and 1 male gamete
3 2 generative cells and 1 male gamete
4 2 male gametes and 1 generative cell
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341958 Correct statements are :
I. In over 60 percent of angiosperms, generative cell divides inside pollen tube after pollination
II.
Parthenium
that came into India as a contaminant with imported rice has become ubiquitous in occurrence and causes pollen allergy
III. Pollen grains are rich in nutrients and so pollen consumption has been claimed to increase the performance of atheletes and race horses
IV. In some angiospermic families like Rosaceae Solanaceae and Leguminosae pollen lose viability within 30 minutes
V. Pollen banks and seed banks are good insitu conservation strategies

1 I and III
2 II and IV
3 III and IV
4 I and V
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341959 Pollen grains can be preserved as fossil because

1 They are small in size
2 They are made up of cellulose
3 They are made up of strong material
sporopollenin
4 They exhibit a fascinating array of
pattern and design
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341960 Each cell of microspore tetrad is

1 Only diploid (2n)
2 Only haploid (n)
3 Some haploid (n) and some diploid (2n)
4 Sometimes (3n)
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341961 When pollen grain is shed at 3-celled stage, name the cells it contains.

1 1 vegetative cell and 2 male gametes
2 2 vegetative cells and 1 male gamete
3 2 generative cells and 1 male gamete
4 2 male gametes and 1 generative cell
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341958 Correct statements are :
I. In over 60 percent of angiosperms, generative cell divides inside pollen tube after pollination
II.
Parthenium
that came into India as a contaminant with imported rice has become ubiquitous in occurrence and causes pollen allergy
III. Pollen grains are rich in nutrients and so pollen consumption has been claimed to increase the performance of atheletes and race horses
IV. In some angiospermic families like Rosaceae Solanaceae and Leguminosae pollen lose viability within 30 minutes
V. Pollen banks and seed banks are good insitu conservation strategies

1 I and III
2 II and IV
3 III and IV
4 I and V
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341959 Pollen grains can be preserved as fossil because

1 They are small in size
2 They are made up of cellulose
3 They are made up of strong material
sporopollenin
4 They exhibit a fascinating array of
pattern and design
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341960 Each cell of microspore tetrad is

1 Only diploid (2n)
2 Only haploid (n)
3 Some haploid (n) and some diploid (2n)
4 Sometimes (3n)
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS

341961 When pollen grain is shed at 3-celled stage, name the cells it contains.

1 1 vegetative cell and 2 male gametes
2 2 vegetative cells and 1 male gamete
3 2 generative cells and 1 male gamete
4 2 male gametes and 1 generative cell