NEET : Multiple Choice question:Pollination, Kinds of Pollination and Chasmogamous and Cleistogamous flower

1.Which of the following statements  is correct .

A. In flowering plants, male gamete is non motile but female gamete is motile.

B. Flowering plants have special array of adaptation to achieve adaptation.

C. Flowering plants use both external and internal agents to achieve pollination.

D. Depending on types of pollen, Pollination is differentiated into Autogamy, Geitonogamy and Xenogamy.

Answer: B Explanation 

2. Transfer of pollen grain from Anther to stigma of same flower called 

A. Autogamy 

B. Geitonogamy 

C . Xenogamy 

D. Chasmogamy

Answer : A Explanation 

3. Which of the following statement is not correct.

A. Complete autogamy is rare in flowers which have exposed anther and stigma.

B. To proceed autogamy, there must be synchronization between pollen release and stigma receptivity.

C . Automgamy advocates  the close location of Anther and stigma to each other.

D. Transfer of pollen grain from Anther to stigma of another flower in same plants also refer to autogamy.

Answer  : D Explanation 

4. Consider the following statement and select how many statements are correct.

1. Transfer of pollen grains from Anther to stigma of another flower in same plants called Geitonogamy.

2. Geitonogamy is consider functionally  as  cross pollination because it occurs by involvement of pollinating agents.

3. Geitonogamy is similar to autogamy because pollen grain come from same plant.

4. Geitonogamy brings genetic variations.

A. One        B. Two

C. Three     D. Four

Answer : C Explanation 

5. Which of the following kind of pollination is pure cross pollination and it bring genetic variations.

A. Chasomogamy.

B. Autogamy

C. Geitonogamy

D. Xenogamy. 

Answer : D Explanation 

6. Consider the following plants in which both chasmogamous and Cleistogamous flowers are found and select the correct code :

1. Oxalis        2. Commelina

3. Viola  4. Common pansy

A. 1, 2 and 3   B. 2, 3 and 4

C. 3, and 4      D.1,2,3and 4

Answer : D Explanation 

7. Which of the following statement is correct about the Chasmogamous flower.

A. Anther and stigma are well exposed because flowers opens completely.

B. Chasmogamous flowers always favour to autogamy.

C. They form seed without the pollinators.

D. Chasmogamous flower does not bring genetic variation. 

Answer : A Explanation 

8. In which of following condition, flowers do not open at all ,  Anther and stigma always located close to each other.

A. Xenogamy 

B. Chasomogamy

C. Cleistogamy 

D. All of the above

Answer : D Explanation 

9. Consider the following statement and select the correct code:

1. Cleistogamous flowers are autogamous flowers and have the  chance of cross pollination.

2. Cleistogamy is a disadvantage because it does not lead genetic variation.

3. Cleostogamous produce seed without the involvement of pollinator.

A. 1, 2 and 3  B. 2 and 3

C. 1 and 3   D. Only 1.

Answer : B Explanation 

10. Identify the F1 and F2 in given diagram :

A. Chasmgamous and Cleistogamous flower

B. Syncarpous and Apocarpous flower

C. Chasmogamous and Syncarpous flower

D. Cleistogamous flower and apocarpous flower.

Answer : A  

11. The given  Diagram of flower is :

A. Insect pollinating flower

B. Cross pollinating flower

C. Self pollinating flower

D. Wind Pollinating flower

Answer : C