Question

Largest sperms in the plants world are found in

• A. Banyan
• B. Cycas
• C. Thuja
• D. Pinus.

Answer 1

The Correct Option is B

The question asks about the plant with the largest sperm in the plant world. Let us explore the options to arrive at the correct answer.

1. Banyan: The banyan tree is a type of fig tree. It does not have sperm cells, as it reproduces through seeds and pollination rather than using motile sperm cells.
2. Cycas: Cycas is a genus of plants often known for its primitive characteristics. This group belongs to the gymnosperms. The male gametes (sperms) of Cycas are large and motile, and microspore development involves the formation of ciliated spermatozoids. Cycas is noted for having the largest sperm cells among plants.
3. Thuja: Thuja, a type of conifer, reproduces through cones and does not have large sperms. The sperm cells in conifers are generally non-motile.
4. Pinus: Pinus, another coniferous plant, also reproduces using non-motile sperm cells. Like Thuja, Pinus uses pollen grains and cones for reproduction rather than having large sperm cells.

Given this information, we can conclude that Cycas is the correct answer. Cycas possesses the largest sperm in the plant kingdom, characterized by its large motile ciliated spermatozoids, distinguishing it from other gymnosperms and seed plants, which generally lack motile sperm.