Question

Match the animals given in List-I with their excretory organs in List-II.

• A. a - ii, b - i, c - iv, d - iii
• B. a - i, b - ii, c - iii, d - iv
• C. a - iii, b - iv, c - i, d - ii
• D. a - iv, b - iii, c - ii, d - i

Hint:

Common excretory match-ups: Platyhelminthes = Flame cells; Annelids = Nephridia; Insects = Malpighian tubules; Crustaceans = Green/Antennal glands.

Answer 1

The Correct Option is C

Step 1: Understanding the Problem:
Different animal phyla have evolved highly specialized anatomical structures to handle the physiological processes of excretion and osmoregulation.
Step 2: Approach and Formula:
Match the specific animal examples to their corresponding phyla, and then link them to the excretory organs characteristic of that phylum.
Step 3: Detailed Explanation:
- a) Leech: Belongs to the phylum Annelida. Annelids typically utilize coiled tubular structures called Nephridia for excretion. (a $\rightarrow$ iii)
- b) Locust: Belongs to the phylum Arthropoda (specifically Class Insecta). Insects utilize Malpighian tubules to excrete uric acid. (b $\rightarrow$ iv)
- c) Liver fluke: ({Fasciola}) Belongs to the phylum Platyhelminthes (flatworms). They possess specialized cells known as Flame cells (protonephridia) for osmoregulation and excretion. (c $\rightarrow$ i)
- d) Balanoglossus: Belongs to the phylum Hemichordata. The characteristic excretory organ situated in the proboscis is the Proboscis gland. (d $\rightarrow$ ii)
Consolidating the matches: a-iii, b-iv, c-i, d-ii.
Step 4: Final Answer:
The correct option is (3).