Question

Tetrad of megaspores is generally

• A. Tetrahedral
• B. Linear
• C. Decussate
• D. Isobilateral

Answer 1

The correct option is B Linear

Megaspore mother cell undergoes meiosis to form four haploid megaspores. These megaspores are arranged in the form of a linear tetrad. The megaspore mother cell undergoes first meiotic division and a transverse wall is laid down resulting in the formation of a dyad. The two cells of the dyad similar divides transversely resulting in the formation of a linear tetrad. Tetrahedral, decussate, and isobilateral tetrads are found in case of microspores i.e. such tetrads are formed during microsporogenesis. Hence, tetrad of megaspores is generally linear.

So, the correct answer is B.