Arrange the stages of microsporogenesis in their order of occurrence
(A) Development of pollen from microspores.
(B) Formation of microspore tetrad
(C) Sporogenous tissue occupies the center of microsporangium
(D) Meiotic division in the cells of sporogenous tissue
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (C), (D), (B), (A)
(C) Sporogenous tissue occupies the center of microsporangium — first. In a young anther, a group of compact, similar cells called the sporogenous tissue fills the centre of each microsporangium. Nothing has divided yet.
(D) Meiotic division in the cells of sporogenous tissue — second. Each cell of this tissue is a pollen mother cell (PMC). As the anther develops, it divides by meiosis.
(B) Formation of microspore tetrad — third. Meiosis gives four haploid microspores from each PMC. They stay together in a cluster of four, the microspore tetrad.
(A) Development of pollen from microspores — last. As the anther matures and dries, the microspores separate from one another and develop into pollen grains.
NCERT Extract:
Stamen, Microsporangium and Pollen Grain – …
