Question

The table given below shows a list of organisms and their methods of reproduction. What do P, Q and R represent?
$\begin{array}{cc}\text{Organism}& \text{Method of reproduction}\\ \text{Sponge}& \text{P}\\ \text{Planaria}& \text{Q}\\ \text{Hydra}& \text{R}\end{array}$

• A. P – Fission, Q – Budding, R – Regeneration
• B. P – Sporulation, Q – Regeneration, R – Budding
• C. P – Binary fission, Q – Sporulation, R - Regeneration
• D. P – Gemmules, Q – Regeneration, R – Budding

Answer 1

The correct option is D

P – Gemmules, Q – Regeneration, R – Budding

Sponges reproduce by producing gemmules. A gemmule is a tough-coated dormant cluster of embryonic cells produced by a freshwater sponge for development in more favourable conditions. Planaria can be cut into pieces, and each piece can regenerate into a complete organism. Hydra reproduces by the formation of buds. These buds can stay attached to the parent or can detach to exist as a separate organism.