Which among the following is incorrect with respect to microsporogenesis? 

(1) The cells of the sporogenous tissue undergo mitotic divisions to form microspore tetrads.

(2) Each cell of the sporogenous tissue is capable of giving rise to a microspore tetrad. Each one is a potential pollen or microspore mother cell (PMC).

(3) The microspores are arranged in a cluster of four cells called as the microspore tetrad.

(4) Inside each microsporangium several thousands of microspores or pollen grains are formed that are released with the dehiscence of anther.

Subtopic:  Stamen: Microsporangium |
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The inner wall of pollen grains is made up of 

(1) Sporopollenin

(2) Cellulose and pectin

(3) Peptidoglycan

(4) Cellulose only

Subtopic:  Stamen: Male Gametophyte |
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The pollen grains are shed at two-celled stage in

(1) 80% angiosperms

(2) 40% angiosperms

(3) 30% angiosperms

(4) 60% angiosperms

Subtopic:  Stamen: Male Gametophyte |
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Which among the following is referred to as male gametophyte?

(1)Stamen

(2) Anther

(3) Pollen grain

(4) microsporangia

Subtopic:  Stamen: Male Gametophyte |
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Which among the following is incorrect with respect to vegetative cell of pollen grain?

(1) It has irregularly shaped nucleus.

(2) It has abundant food reserve.

(3) It is spindle shaped with dense cytoplasm.

(4) It is bigger as compared to generative cell.

Subtopic:  Stamen: Male Gametophyte |
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A, B, C and D in the following diagram respectively are:

(1) Epidermis, endothecium, middle layers, tapetum

(2) Epidermis, middle layers, PMC, tapetum

(3) Endothecium, middle layers, microspore mother cells, tapetum

(4) Epidermis, middle layers, tapetum, PMC

Subtopic:  Stamen: Microsporangium |
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Match the following:

1

Male gametophyte

I

Embryo sac

2    

Female gametophyte   

II

Ovule

3

Megasporangium

III   

Pollen grains

4

Microsporangium

 

IV

Pollen sacs

(1) 1-III ; 2-I ; 3-II ; 4-IV

(2) 1-I ; 2-II ; 3-III ; 4-IV

(3) 1-IV ; 2-III ; 3-II ; 4-I

(4) 1-III ; 2-II ; 3-I ; 4-IV

Subtopic:  Stamen: Microsporangium | Stamen: Male Gametophyte | Pistil: Female Gametophyte |
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The following figure represents :

(1) Transverse section of young anther

(2) 3-D cut section of mature anther

(3) Cut section of filament

(4) Transverse section of mature filament

Subtopic:  Stamen: Anther |
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The diameter of pollen grain generally varies from:

(1) 40-50 micrometers

(2) 25-50 micrometers

(3) 10-12 micrometers

(4) 8-25 micrometers

Subtopic:  Stamen: Male Gametophyte |
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The outer layer exine is made up of:

(1) Cellulose and pectin

(2) Peptidoglycan

(3) Cellulose

(4) Sporopollenin

Subtopic:  Stamen: Male Gametophyte |
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