Double fertilization is a characteristic feature of angiosperms in which one male gamete fuses with egg (called syngamy) and other male gamete fuses with two two polar nuclei (called triple fusion) to form endosperm.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341566
Double fertilization involves
1 Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
2 Fertilization of egg and central cell by two sperms brought by different pollen tubes
3 Fertilization of egg and central cell by two sperms brought by same pollen tubes
4 Fertilization of egg by two male gametes.
Explanation:
Double Fertilization is simultaneous occurrence of syngamy and triple fusion. Double fertilization involves fertilization of egg and central cell by two sperms brought by same pollen tubes
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341567
In an embryo sac, the cells that degenerate after fertilisation are:
1 Synergids and primary endosperm cell
2 Synergids and antipodals
3 Antipodals and primary endosperm cell
4 Egg and antipodals.
Explanation:
Synergids and anti podals degenerate after fertilisation.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341568
Vegetative fertilization involves fusion of
1 Two polar nuclei
2 A male gamete and a synergid
3 A male gamete and antipodal cell
4 Nucleus of a male gamete and secondary nucleus
Explanation:
The fusion of male and female gametes is called fertilization. Fertilization in angiosperms involves two nuclear fusions, one between one of the male gametes and the egg and the other between the second male gamete and the secondary nucleus of the polar nuclei. The first of these fusions called generative fertilization or syngamy which leads to the formation of a zygote and the second known as vegetative fertilization which leads to the formation of a triploid primary endosperm nucleus.
Double fertilization is a characteristic feature of angiosperms in which one male gamete fuses with egg (called syngamy) and other male gamete fuses with two two polar nuclei (called triple fusion) to form endosperm.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341566
Double fertilization involves
1 Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
2 Fertilization of egg and central cell by two sperms brought by different pollen tubes
3 Fertilization of egg and central cell by two sperms brought by same pollen tubes
4 Fertilization of egg by two male gametes.
Explanation:
Double Fertilization is simultaneous occurrence of syngamy and triple fusion. Double fertilization involves fertilization of egg and central cell by two sperms brought by same pollen tubes
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341567
In an embryo sac, the cells that degenerate after fertilisation are:
1 Synergids and primary endosperm cell
2 Synergids and antipodals
3 Antipodals and primary endosperm cell
4 Egg and antipodals.
Explanation:
Synergids and anti podals degenerate after fertilisation.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341568
Vegetative fertilization involves fusion of
1 Two polar nuclei
2 A male gamete and a synergid
3 A male gamete and antipodal cell
4 Nucleus of a male gamete and secondary nucleus
Explanation:
The fusion of male and female gametes is called fertilization. Fertilization in angiosperms involves two nuclear fusions, one between one of the male gametes and the egg and the other between the second male gamete and the secondary nucleus of the polar nuclei. The first of these fusions called generative fertilization or syngamy which leads to the formation of a zygote and the second known as vegetative fertilization which leads to the formation of a triploid primary endosperm nucleus.
Double fertilization is a characteristic feature of angiosperms in which one male gamete fuses with egg (called syngamy) and other male gamete fuses with two two polar nuclei (called triple fusion) to form endosperm.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341566
Double fertilization involves
1 Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
2 Fertilization of egg and central cell by two sperms brought by different pollen tubes
3 Fertilization of egg and central cell by two sperms brought by same pollen tubes
4 Fertilization of egg by two male gametes.
Explanation:
Double Fertilization is simultaneous occurrence of syngamy and triple fusion. Double fertilization involves fertilization of egg and central cell by two sperms brought by same pollen tubes
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341567
In an embryo sac, the cells that degenerate after fertilisation are:
1 Synergids and primary endosperm cell
2 Synergids and antipodals
3 Antipodals and primary endosperm cell
4 Egg and antipodals.
Explanation:
Synergids and anti podals degenerate after fertilisation.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341568
Vegetative fertilization involves fusion of
1 Two polar nuclei
2 A male gamete and a synergid
3 A male gamete and antipodal cell
4 Nucleus of a male gamete and secondary nucleus
Explanation:
The fusion of male and female gametes is called fertilization. Fertilization in angiosperms involves two nuclear fusions, one between one of the male gametes and the egg and the other between the second male gamete and the secondary nucleus of the polar nuclei. The first of these fusions called generative fertilization or syngamy which leads to the formation of a zygote and the second known as vegetative fertilization which leads to the formation of a triploid primary endosperm nucleus.
Double fertilization is a characteristic feature of angiosperms in which one male gamete fuses with egg (called syngamy) and other male gamete fuses with two two polar nuclei (called triple fusion) to form endosperm.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341566
Double fertilization involves
1 Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
2 Fertilization of egg and central cell by two sperms brought by different pollen tubes
3 Fertilization of egg and central cell by two sperms brought by same pollen tubes
4 Fertilization of egg by two male gametes.
Explanation:
Double Fertilization is simultaneous occurrence of syngamy and triple fusion. Double fertilization involves fertilization of egg and central cell by two sperms brought by same pollen tubes
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341567
In an embryo sac, the cells that degenerate after fertilisation are:
1 Synergids and primary endosperm cell
2 Synergids and antipodals
3 Antipodals and primary endosperm cell
4 Egg and antipodals.
Explanation:
Synergids and anti podals degenerate after fertilisation.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341568
Vegetative fertilization involves fusion of
1 Two polar nuclei
2 A male gamete and a synergid
3 A male gamete and antipodal cell
4 Nucleus of a male gamete and secondary nucleus
Explanation:
The fusion of male and female gametes is called fertilization. Fertilization in angiosperms involves two nuclear fusions, one between one of the male gametes and the egg and the other between the second male gamete and the secondary nucleus of the polar nuclei. The first of these fusions called generative fertilization or syngamy which leads to the formation of a zygote and the second known as vegetative fertilization which leads to the formation of a triploid primary endosperm nucleus.
