The synergids have special cellular thickenings at the micropylar tip called filiform apparatus, which play an important role in guiding the pollen tubes into the synergid.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341916
In a fertilised embryo sac, the haploid, diploid and triploid structures are:
1 Synergid, zygote and primary endosperm nucleus
2 Synergid, antipodal and polar nuclei
3 Antipodal, synergid and primary endosperm nucleus
4 Synergid, polar nuclei and zygote.
Explanation:
Synergid, zygote and primary endosperm nucleus.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341917
Match the columns I and II. w.r.t. Embryo sac. Column I Column II A Egg cell P Diploid B Antipodal cell Q Haploid C Synergids D Secondary nucleus
1 A – Q, B – P , C – Q, D – Q
2 A – Q, B – Q, C – Q, D – P
3 A – P , B – Q, C – Q, D – Q
4 A – Q, B – Q , C – P, D – Q
Explanation:
A – Q, B – Q, C – Q, D – P
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341918
Female gametophyte of angiosperm mostly is
1 9 celled, 8-nucleate
2 8 celled, 7-nucleate
3 7 celled, 8-nucleate
4 1 celled, 7-nucleate
Explanation:
A typical angiosperm embryo sac, at maturity, though 8-nucleate is 7-celled.
The synergids have special cellular thickenings at the micropylar tip called filiform apparatus, which play an important role in guiding the pollen tubes into the synergid.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341916
In a fertilised embryo sac, the haploid, diploid and triploid structures are:
1 Synergid, zygote and primary endosperm nucleus
2 Synergid, antipodal and polar nuclei
3 Antipodal, synergid and primary endosperm nucleus
4 Synergid, polar nuclei and zygote.
Explanation:
Synergid, zygote and primary endosperm nucleus.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341917
Match the columns I and II. w.r.t. Embryo sac. Column I Column II A Egg cell P Diploid B Antipodal cell Q Haploid C Synergids D Secondary nucleus
1 A – Q, B – P , C – Q, D – Q
2 A – Q, B – Q, C – Q, D – P
3 A – P , B – Q, C – Q, D – Q
4 A – Q, B – Q , C – P, D – Q
Explanation:
A – Q, B – Q, C – Q, D – P
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341918
Female gametophyte of angiosperm mostly is
1 9 celled, 8-nucleate
2 8 celled, 7-nucleate
3 7 celled, 8-nucleate
4 1 celled, 7-nucleate
Explanation:
A typical angiosperm embryo sac, at maturity, though 8-nucleate is 7-celled.
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BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341915
Filiform apparatus is found in
1 Secondary nucleus
2 Synergids
3 Egg cell
4 Antipodal cell
Explanation:
The synergids have special cellular thickenings at the micropylar tip called filiform apparatus, which play an important role in guiding the pollen tubes into the synergid.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341916
In a fertilised embryo sac, the haploid, diploid and triploid structures are:
1 Synergid, zygote and primary endosperm nucleus
2 Synergid, antipodal and polar nuclei
3 Antipodal, synergid and primary endosperm nucleus
4 Synergid, polar nuclei and zygote.
Explanation:
Synergid, zygote and primary endosperm nucleus.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341917
Match the columns I and II. w.r.t. Embryo sac. Column I Column II A Egg cell P Diploid B Antipodal cell Q Haploid C Synergids D Secondary nucleus
1 A – Q, B – P , C – Q, D – Q
2 A – Q, B – Q, C – Q, D – P
3 A – P , B – Q, C – Q, D – Q
4 A – Q, B – Q , C – P, D – Q
Explanation:
A – Q, B – Q, C – Q, D – P
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341918
Female gametophyte of angiosperm mostly is
1 9 celled, 8-nucleate
2 8 celled, 7-nucleate
3 7 celled, 8-nucleate
4 1 celled, 7-nucleate
Explanation:
A typical angiosperm embryo sac, at maturity, though 8-nucleate is 7-celled.
The synergids have special cellular thickenings at the micropylar tip called filiform apparatus, which play an important role in guiding the pollen tubes into the synergid.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341916
In a fertilised embryo sac, the haploid, diploid and triploid structures are:
1 Synergid, zygote and primary endosperm nucleus
2 Synergid, antipodal and polar nuclei
3 Antipodal, synergid and primary endosperm nucleus
4 Synergid, polar nuclei and zygote.
Explanation:
Synergid, zygote and primary endosperm nucleus.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341917
Match the columns I and II. w.r.t. Embryo sac. Column I Column II A Egg cell P Diploid B Antipodal cell Q Haploid C Synergids D Secondary nucleus
1 A – Q, B – P , C – Q, D – Q
2 A – Q, B – Q, C – Q, D – P
3 A – P , B – Q, C – Q, D – Q
4 A – Q, B – Q , C – P, D – Q
Explanation:
A – Q, B – Q, C – Q, D – P
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341918
Female gametophyte of angiosperm mostly is
1 9 celled, 8-nucleate
2 8 celled, 7-nucleate
3 7 celled, 8-nucleate
4 1 celled, 7-nucleate
Explanation:
A typical angiosperm embryo sac, at maturity, though 8-nucleate is 7-celled.