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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Which among the following is not a characteristic feature of sporopollenin?

(1) Sporopollenin is one of the most resistant organic material known.

(2) It can withstand high pressures.

(3) No enzyme that degrades sporopollenin is known.

(4) The exine exhibits a fascinating array of patterns and designs.

Subtopic:  Stamen: Male Gametophyte |
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Identify A, B and X :-

 X contains two cells - A and B. B is bigger than A, it has abundant food reserve and large irregularly shaped nucleus. A is small and floats in the cytoplasm of B. It is spindle shaped with dense cytoplasm and nucleus.

 

     A

       B

    X

(1)

Vegetative cell

Generative cell

Pollen grain

(2)

Generative cell

Vegetative cell

Pollen grain

(3)

Generative cell

Vegetative cell

Anther

(4)  

Generative cell   

Vegetative cell   

Filament

Subtopic:  Stamen: Male Gametophyte |
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Which among the following is not true about pollen grain?

(1) Rich in nutrients.

(2) Many species cause severe allergies and bronchial afflictions in some people often leading to chronic respiratory disorders– asthma, bronchitis, etc.

(3) Pollen consumption has been claimed to increase the performance race horses.

(4) Parthenium is used against pollen allergy.

Subtopic:  Stamen: Male Gametophyte |
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Pollen grain of which among the following lose viability within 30 minutes?

(1) Wheat

(2) Rosaceae

(3) Leguminoseae

(4) Solanaceae

Subtopic:  Stamen: Male Gametophyte |
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Which among the following is not a feature of pistil?

(1) Monocarpellary

(2) Syncarpous

(3) Monosporic

(4) Apocarpous

Subtopic:  Pistil: Female Gametophyte |
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Cryopreservation is a technique to preserve substances like pollen grains in liquid nitrogen at temperature

(1) –150 °C

(2) 77.15 K

(3) –210 °C

(4) 110 K

Subtopic:  Stamen: Male Gametophyte |
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