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Development of Male Gametophyte

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Question

The male gametophyte of an angiosperm consists of

A

An anther

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B

A sac containing eight haploid nuclei

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C

A microspore

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D

A germinated pollen grain

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Solution

The correct option is C A microspore
The male gametophyte of an angiosperm contains a microspore which has two haploid nuclei in it.

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Q. The plant parts which are haploid and present inside diploid part are:
(a) Embryo within the seed
(b) Pollen grains within the pollen sac
(c) Seed inside the fruit
(d) Female gametophyte within the ovule
(e) Male gametes within the pollen grains

Q. The plant parts which consist of two generations one within the other :
a) Pollen grains inside the anther
(b) Germinated pollen grain with two male gametes
(c) Seed inside the fruit
(d) Embryo sac inside the ovule

Q. Based on the given excerpt, answer the given question.

Stamen is regarded as a microsporophyll that possesses microsporangia which have microspore mother cells that give rise to microspores. The cells of sporogenous tissues undergo meiotic division to form microspore tetrad. Microspore is present in the bilobed structure called anther. A male gametophyte is a gamete producing haploid phase in a plant. In angiosperms, it is the pollen grains that are regarded as gametophytes.

The inner wall of pollen grain is called ____A_____ and it is made up of ____B___.
[1 mark]

Q. Based on the given excerpt, answer the given question.

Stamen is regarded as a microsporophyll that possesses microsporangia which have microspore mother cells that give rise to microspores. The cells of sporogenous tissues undergo meiotic division to form microspore tetrad. Microspore is present in the bilobed structure called anther. A male gametophyte is a gamete producing haploid phase in a plant. In angiosperms, it is the pollen grains that are regarded as gametophytes.

Endothecium is responsible for ______________ of pollen grains.

i) nutrition
ii) protection
iii) dehiscence
[1 mark]

Q. Based on the given excerpt, answer the given question.

Stamen is regarded as a microsporophyll that possesses microsporangia which have microspore mother cells that give rise to microspores. The cells of sporogenous tissues undergo meiotic division to form microspore tetrad. Microspore is present in the bilobed structure called anther. A male gametophyte is a gamete producing haploid phase in a plant. In angiosperms, it is the pollen grains that are regarded as gametophytes.

A dithecous anther is __________.
[1 mark]

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