Question

Match the type of cells given in Column I with organisms given in Column II. Choose the appropriate combination of the options.

Column I	Column II
A. Flame cells	i) Sponges
B. Collar cells	ii) Hydra
C. Stinging cells	iii) Planaria

• A. P- iii), Q- i), R- ii)
• B. P- iii), Q- ii), R- i)
• C. P- i), Q- ii), R- iii)
• D. P- ii), Q- iii), R- i)

Answer 1

Answer: (A)

P- iii), Q- i), R- ii)

Flame cells are specialized excretory structures found in the freshwater invertebrates like flatworms, rotifers, Planaria. They function like kidneys.

Collar cells are the special type of cells that make the Choanoderm of the sponges. They line the interior of asconoid, syconoid and leuconoid body type sponges.

Stinging cells are present in the family Cnidaria. Animals like jellyfish, sea anemones, corals, hydra uses stinging cells to catch prey.

Thus, the correct answer is option A.