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Development of Female Gametophyte

Which of the ...

Question

Which of the following statements is correct?

A

The polar nuclei are located in the central cell of the embryo sac.

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B

Nucellus is the protective covering around the ovule.

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C

Filiform apparatus is located at the chalazal end.

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D

Embryo sac is located in the integuments.

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Solution

The correct option is A The polar nuclei are located in the central cell of the embryo sac.
The polar nuclei are located in the central cell of the embryo sac.

The protective covering around the ovule are the integuments.

Nucellus is the diploid nutritive tissue enclosed within the integuments. Embryo sac is located in the nucellus.

The filiform apparatus is located at the micropylar end and not the chalazal end. Filiform apparatus helps in guiding the pollen tube into the synergids.

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Similar questions

Q. Assertion : The chalazal cells of the embryo sac is central cell.
Reason : They play nutritive role for embryo sac.

Q. Choose the correct statement(s).
Statement 1: In a mature embryo sac, egg apparatus is situated towards the chalazal end.
Statement 2: In a mature embryo sac, antipodal cells are situated towards the micropylar end.
Statement 3: An angiosperm embryo sac is 7-celled 8-nucleate at maturity.

Q. Select the correct statement(s) regarding the structure of a mature embryo sac.
(i) Egg apparatus is situated towards chalazal end.
(ii) Antipodal cells are situated towards micropylar end.
(iii) a typical angiospermic embryo sac is

7

8

nucleate at maturity.

Q. Assertion: A typical angiosperm embryo sac is 8-nucleate and 7-celled.
Reason: The large central cell of embryo sac has three polar nuclei.

Q. Assertion :One diploid embryo sac mother cell develop within the nucellus of the ovule. Reason: Embryo sac mother cell divides meiotically and one of the cells produced becomes the haploid embryo sac.

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Development of Female Gametophyte

Standard XII Biology

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