Question

Arrange the following in the correct developmental sequence related to microsporogenesis :
A. Microspore tetrads
B. Sporogenous tissue
C. Pollen grains
D. Pollen mother cells

• A. D, A, C, B
• B. B, D, C, A
• C. A, D, C, B
• D. B, D, A, C

Hint:

To remember the sequence: \textbf{S}porogenous $\rightarrow$ \textbf{M}other cell $\rightarrow$ \textbf{T}etrad $\rightarrow$ \textbf{P}ollen. (Think: \textbf{S}ome \textbf{M}others \textbf{T}each \textbf{P}atience).

Answer 1

The Correct Option is D

Step 1 : Understanding the Question
This question focuses on the anatomical development within the anther, requiring the correct chronological order of structures formed during the production of pollen.
Step 2 : Key Formulas and approach
The approach is to trace the biological maturation: $\text{Mass of cells} \rightarrow \text{Differentiation} \rightarrow \text{Meiosis} \rightarrow \text{Individual Gametophytes}$.
Step 3 : Detailed Explanation

Stage 1 (B): A young anther has a center filled with (A) sporogenous tissue, which is a group of homogenous, diploid cells.

Stage 2 (D): As development proceeds, cells of this tissue differentiate into (B) Pollen Mother Cells (PMC). Each PMC is capable of undergoing meiosis.

Stage 3 (A): Each PMC divides meiotically to produce four haploid cells that remain attached, known as a (C) microspore tetrad.

Stage 4 (C): Upon dehydration and maturation of the anther, the tetrad breaks apart, and individual cells develop into (D) pollen grains.

Step 4 : Final Answer
The sequence is B $\rightarrow$ D $\rightarrow$ A $\rightarrow$ C. This corresponds to option (B).