Where does megasporogenesis occur in the ovule of an angiosperm ? Describe the process up to the development of a mature embryo sac.

 

 
 
 
 
 

Answers (1)

Occurs in the nucellus (towards the micropylar end)

A single megaspore mother cell MMC) undergoes meiotic division, results in the generation of four megaspores, one of the megaspores is functional while the other three degenerate, this type of megasporogenesis is monosporic and the nucleus of the functional megaspore separates mitotically to form the 8-nucleate stages of the embryo sac. Six of the eight nuclei are enclosed by cell walls, the remaining two polar nuclei remain In the large central cell, the three cells are towards the micropylar end are the two synergids and one egg cell, three cells at the chalazal end are called the antipodals.

A typical angiosperm embryo sac at maturity is 8-nucleate and 7-celled.

Most Viewed Questions

Preparation Products

Knockout NEET May 2023 (Easy Installments)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 5499/-
Buy Now
Knockout JEE Main April 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
Buy Now
Knockout NEET Aug 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
Buy Now
Knockout JEE Main May 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-
Buy Now
Knockout NEET Aug 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-
Buy Now
Boost your Preparation for JEE Main with our Foundation Course
 
Exams
Articles
Questions