02. Megasporangium (ovule) and Embryo Sac
Sexual Reproduction in Flowering Plants

262627 In Angiosperms pollen tube liberate their male gametes into the :-

1 Central cell
2 Antipodal cells
3 Egg cell
4 Synergids
Sexual Reproduction in Flowering Plants

262628 Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by Strasburger.
i. Mycropyle, chalaza and funiculus are arranged in the same vertical line in the ovule
ii. Presence of both unisexual and bisexual flowers in same plant
iii. Filiform apparatus helps in conduction of food materials from endosperm to egg apparatus
iv. Long funiculus coils like a watch spring around the ovule.

1 i, iv
2 ii, iii
3 i, ii
4 iii, iv
Sexual Reproduction in Flowering Plants

262630 Embryo sac is

1 Megaspore
2 Micro gametophyte
3 Female gametophyte
4 Mega sporangium
Sexual Reproduction in Flowering Plants

262631 The normal type of embryo sac is 8-nucleated and

1 8-called
2 7-celled
3 6-celled
4 5-celled
Sexual Reproduction in Flowering Plants

262632 Double fertilization involves

1 fertilization of the egg by two male gametes
2 fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
3 fertilization of the egg and the central cell by two sperms brought by different pollen tubes
4 fertilization of the egg and the central cell by two sperms brought by the same pollen tube.
Sexual Reproduction in Flowering Plants

262627 In Angiosperms pollen tube liberate their male gametes into the :-

1 Central cell
2 Antipodal cells
3 Egg cell
4 Synergids
Sexual Reproduction in Flowering Plants

262628 Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by Strasburger.
i. Mycropyle, chalaza and funiculus are arranged in the same vertical line in the ovule
ii. Presence of both unisexual and bisexual flowers in same plant
iii. Filiform apparatus helps in conduction of food materials from endosperm to egg apparatus
iv. Long funiculus coils like a watch spring around the ovule.

1 i, iv
2 ii, iii
3 i, ii
4 iii, iv
Sexual Reproduction in Flowering Plants

262630 Embryo sac is

1 Megaspore
2 Micro gametophyte
3 Female gametophyte
4 Mega sporangium
Sexual Reproduction in Flowering Plants

262631 The normal type of embryo sac is 8-nucleated and

1 8-called
2 7-celled
3 6-celled
4 5-celled
Sexual Reproduction in Flowering Plants

262632 Double fertilization involves

1 fertilization of the egg by two male gametes
2 fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
3 fertilization of the egg and the central cell by two sperms brought by different pollen tubes
4 fertilization of the egg and the central cell by two sperms brought by the same pollen tube.
Sexual Reproduction in Flowering Plants

262627 In Angiosperms pollen tube liberate their male gametes into the :-

1 Central cell
2 Antipodal cells
3 Egg cell
4 Synergids
Sexual Reproduction in Flowering Plants

262628 Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by Strasburger.
i. Mycropyle, chalaza and funiculus are arranged in the same vertical line in the ovule
ii. Presence of both unisexual and bisexual flowers in same plant
iii. Filiform apparatus helps in conduction of food materials from endosperm to egg apparatus
iv. Long funiculus coils like a watch spring around the ovule.

1 i, iv
2 ii, iii
3 i, ii
4 iii, iv
Sexual Reproduction in Flowering Plants

262630 Embryo sac is

1 Megaspore
2 Micro gametophyte
3 Female gametophyte
4 Mega sporangium
Sexual Reproduction in Flowering Plants

262631 The normal type of embryo sac is 8-nucleated and

1 8-called
2 7-celled
3 6-celled
4 5-celled
Sexual Reproduction in Flowering Plants

262632 Double fertilization involves

1 fertilization of the egg by two male gametes
2 fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
3 fertilization of the egg and the central cell by two sperms brought by different pollen tubes
4 fertilization of the egg and the central cell by two sperms brought by the same pollen tube.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Sexual Reproduction in Flowering Plants

262627 In Angiosperms pollen tube liberate their male gametes into the :-

1 Central cell
2 Antipodal cells
3 Egg cell
4 Synergids
Sexual Reproduction in Flowering Plants

262628 Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by Strasburger.
i. Mycropyle, chalaza and funiculus are arranged in the same vertical line in the ovule
ii. Presence of both unisexual and bisexual flowers in same plant
iii. Filiform apparatus helps in conduction of food materials from endosperm to egg apparatus
iv. Long funiculus coils like a watch spring around the ovule.

1 i, iv
2 ii, iii
3 i, ii
4 iii, iv
Sexual Reproduction in Flowering Plants

262630 Embryo sac is

1 Megaspore
2 Micro gametophyte
3 Female gametophyte
4 Mega sporangium
Sexual Reproduction in Flowering Plants

262631 The normal type of embryo sac is 8-nucleated and

1 8-called
2 7-celled
3 6-celled
4 5-celled
Sexual Reproduction in Flowering Plants

262632 Double fertilization involves

1 fertilization of the egg by two male gametes
2 fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
3 fertilization of the egg and the central cell by two sperms brought by different pollen tubes
4 fertilization of the egg and the central cell by two sperms brought by the same pollen tube.
Sexual Reproduction in Flowering Plants

262627 In Angiosperms pollen tube liberate their male gametes into the :-

1 Central cell
2 Antipodal cells
3 Egg cell
4 Synergids
Sexual Reproduction in Flowering Plants

262628 Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by Strasburger.
i. Mycropyle, chalaza and funiculus are arranged in the same vertical line in the ovule
ii. Presence of both unisexual and bisexual flowers in same plant
iii. Filiform apparatus helps in conduction of food materials from endosperm to egg apparatus
iv. Long funiculus coils like a watch spring around the ovule.

1 i, iv
2 ii, iii
3 i, ii
4 iii, iv
Sexual Reproduction in Flowering Plants

262630 Embryo sac is

1 Megaspore
2 Micro gametophyte
3 Female gametophyte
4 Mega sporangium
Sexual Reproduction in Flowering Plants

262631 The normal type of embryo sac is 8-nucleated and

1 8-called
2 7-celled
3 6-celled
4 5-celled
Sexual Reproduction in Flowering Plants

262632 Double fertilization involves

1 fertilization of the egg by two male gametes
2 fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
3 fertilization of the egg and the central cell by two sperms brought by different pollen tubes
4 fertilization of the egg and the central cell by two sperms brought by the same pollen tube.