MCQ ON POLLINATION class 12 for NEET

MCQ ON POLLINATION class 12 for NEET | POLLINATION class 12 | MCQ POLLINATION with Answer | Check the below NCERT MCQ question for class 12 Biology based on the with Answers.

MCQ on POLLINATION class 12 Biology with answers were prepared based on the latest pattern.We have provided class 12 Biology MCQs questions on POLLINATION with Answers to help students understand the concept very well.

MCQ ON POLLINATION is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23, 2023-24

Introduction:-
Pollen grains are in mobile. They require an external agent or force for reaching the stigma. Pollination is the transfer of pollen grains from anther to stigma. It is indirect type as compared to direct pollination in gymnosperms.

It is of two types – self pollination and cross pollination .

Self transfer of pollen grains from enter to the stigma of same or genetically similar flower. It is possible only when enters and stigma mature simultaneously. The phenomenal is called homogamy. Self pollination is of two types autogamy and geitonogamy.

Autonomy means self formation which occurs between anther and stigma of the same flower.
Autogamy takes place in three circumstances.
Chasmogamous devices, cleistogamy, bud pollination.

Geitonogamy is the transfer of pollen grains from anthers of one flower to stigma under flower of same or genetically similar plant.

Self pollination maintenance purity of press and superiority of variety once developed.

Cross pollination transfer of pollen grains from the anthers of one flower to stigma of genetically dissimilar flower. Cross pollination is also called xenogamy. Both xenogamy and geitonogamy are included under allogamy. Cross pollination requires external agent.

MCQ ON POLLINATION class 12 for NEET

1. The transfer of pollen grain from anthes to same or genetically similar flower is

(a) self pollination
(b) cross pollination
(c) cleistogamy
(d) bud pollination

Ans (a) self pollination

2. The self pollination which occurs between entre and stigma of the same flower

(a) autogamy
(b) cleistogamy
(c) geitonogamy
(d) cross pollination

Ans. (a) autogamy

3. The flower remains close so that only self pollination occurs is

(a) autogamy
(b) cleistogamy
(c) cross pollination
(d) bud pollination

Ans. (b) cleistogamy

4. In several cultivated plants self pollination occurs in the bud conditions before the flowers open

(a) bud pollination
(b) autogamy
(c) cleistogamy
(d) geitonogamy

Ans.(a) bud pollination

5. The transfer of pollen grains from anthers of one flower to stigma another flower of either the same or genetically similar plant.

(a) geitonogamy
(b) autogamy
(c) cleistogamy
(d) allogamy

Ans.(a) geitonogamy

6. Cleistogamy occurs in

(a) ficus
(b) commelina
(c) anthocephalus
(d) vallisnaria

Ans.(b) commelina

7. Cleistogamous flower are

(a) Male flower which never open
(b) female flowers which never open
(c) bisexual flowers which never open
(d) open bisexual flowers which performs self pollination in bud condition

Ans.(c) bisexual flowers which never open

8. Non transfer of pollen grain from anther to stigma of the same flower due to a mechanical barrier is

(a) dichogamy
(b) herkogamy
(c) heterostyly
(d) cleistogamy

Ans.(b) herkogamy

9. Pollination occurs in

(a) bryophytes and angiosperms
(b) pteridophytes and angiosperms
(c) angiosperms and gymnosperms
(d) angiosperms and fungi

Ans. (c) angiosperms and gymnosperms

10. Ornithophily is pollination by

(a) humans
(b) wind
(c) birds
(d) bat

Ans. (c) birds

11. Pollination occuring in closed flower is

(a) dicliny
(b)protogyny
(c) allogamy
(d) cleistogamy