Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5

Q.

How many meiosis and mitotic divisions are required for the formation of mature male gametophyte from a PMC?

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

1 Meiosis, 2 Mitosis

b

2 Meiosis, 2 Mitosis

c

1 Meiosis, 1 Mitosis

d

1 Meiosis, 3 Mitosis

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

 A mature male gametophyte is one that has 2 vegetative cells and 1 generative cell. It takes one meiosis and two mitosis to form a mature 3 celled pollen grains.

Microsporogenesis: Pollen mother cell (2n) undergoes meiosis to form microspores (n).

Microgametogenesis: Each microspore undergoes mitosis to form a 2-celled structure(one vegetative cell and one generative cell). In 60 % of angiosperms, pollen is released at the 2 celled stage. While in 40 % of angiosperms, pollen is released at 3 celled stage.
For this to happen, one more round of mitosis takes place at the 2 celled stage to form a 3 celled structure which is a mature pollen grain.

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon