Male Gametophyte

Q.

Pollen tablets are available in the market for:

1. Breeding programs

2. In vitro fertilization

3. Ex-situ conservation

4. Supplementing food

Q. The pollen grains of __________ cause pollen allergy.

1. orchids
2. Parthenium
3. Bryophyllum
4. None of these

Q.

The __ in angiosperms acts as a reproductive organ.

Q. Assertion: Pollen grains are well preserved as fossils.
Reason: The outer layer of pollen grains called the exine is made up of sporopollenin.

1. Both assertion and reason are true and reason is the correct explanation of assertion.
2. Both assertion and reason are true but reason is not the correct explanation of assertion.
3. The assertion is true but reason is false.
4. Both assertion and reason are false.

Q. Sporopollenin occurs in ________.

1. cytoplasm of vegetative cell of pollen grain
2. wall of microsporangium
3. exine of pollen wall
4. intine of pollen wall

Q. Sporopollenin, a chemical substance is found in___

1. intine of pollen grain
2. exine of pollen grain
3. endothecium of anther
4. tapetum of anther

Q.

Match the following

Column -I Column- II

(i) Exine (a) Sporopollenin absent

(ii) Intine (b) Tube cell

(iii) Germ pore (c) Thin continuous layer

(iv) Vegetative cell (d) Fertile cell

(v) Generative cell (e) Thick porous layer

1. (i) -(e), (ii) - (c). (iii) -(a), (iv) -(d) , (v)- (b)

2. (i) -(e), (ii) -(c), (iii)-(a), (iv) -(b) , (v) -(d)

3. (i) -(e), (ii) -(d), (iii)- (c), (iv) -(b) , (v) -(a)

4. (i) -(a), (ii) -(b) , (iii)-(c), (iv) -(d), (v) - (e)

Q.

Assertion: A pollen enters Rohit’s body while he was playing in the park.
Reason: Pollen may enter through nose and mouth and sunlight.

1. Assertion is True, Reason is True; Reason is a correct explanation for Assertion.

2. Assertion is True, Reason is True; Reason is NOT a correct explanation for Assertion.

3. Assertion is True, Reason is False.

4. Assertion is False, Reason is True

Q.

Technically stamens are called microsporophyll. True or false?

1. True

2. False

Q. Pollen grains can withstand extreme environmental conditions due to the presence of in their exine.

1. cellulose
2. pectin
3. sporopollenin
4. keratin

Q. Which among the following is true regarding pollen tablets?

1. They are used as food supplements.
2. They increase the performance of athletes and race horses.
3. They are used for pollination
4. Both a and b

Q. Which of the following is not true about generative cell?

1. It is smaller in size than vegetative cell.
2. It is spindle-shaped.
3. It has dense cytoplasm and a nucleus.
4. It has the vegetative cell suspended in its cytoplasm.

Q. Which of the following is the male gametophyte in angiosperms?

1. 
2. 
3. 
4. 

Q. A mature pollen grain of Pinus has

1. 2 cells
2. 4 cells
3. 3 cells
4. 5 cells

Q.

Which one of the following does not make up the Casparian strips?

1. Chitin

2. Suberin

3. Lignin

4. Cutin

Q.

Which of the following plant material is an effective imbibiant?

1. Agar

2. Cellulose

3. Lignin

4. Pectin

Q.

Exine in pollen grains is formed by -

1. Sporogenous cells

2. Tapetal cells

3. Middle layers

4. Pollen mother cells