Match column-I with column-II and select the correct option
a Gregarious, polyphagous pest`" "` i Asterias
b Adult with radial symmetry and larva with bilateral symmetry`" "` ii Scorpion
c Book lungs`" "` iii Ctenoplana
d Bioluminescence`" "` iv Locusta

Options

A. a(iii), b(i), c(ii),d(iv)
B. a(ii), b(iv), c(i),d(iii)
C. a(iii), b(iv), c(i),d(ii)
D. a(iv), b(i), c(ii),d(iii)

Answer

To solve the matching question, we will analyze each item in Column-I and find the corresponding item in Column-II.

### Step-by-Step Solution:

1. **Identify A: Gregarious, polyphagous pest**
- The term "gregarious" refers to organisms that live in groups, and "polyphagous" means they feed on various types of food. The locust is known for being a gregarious pest that can consume a wide range of plants.
- **Match:** A (Gregarious, polyphagous pest) → iv (Locusta)

2. **Identify B: Adult with radial symmetry and larva with bilateral symmetry**
- Asterias refers to starfish, which exhibit radial symmetry in their adult form and bilateral symmetry in their larval form.
- **Match:** B (Adult with radial symmetry and larva with bilateral symmetry) → i (Asterias)

3. **Identify C: Book lungs**
- Book lungs are respiratory structures found in arachnids, such as scorpions. They are used for gas exchange.
- **Match:** C (Book lungs) → ii (Scorpion)

4. **Identify D: Bioluminescence**
- Ctenoplana, which belongs to the phylum Ctenophora, is known for its bioluminescent properties.
- **Match:** D (Bioluminescence) → iii (Ctenoplana)

### Final Matches:
- A → iv (Locusta)
- B → i (Asterias)
- C → ii (Scorpion)
- D → iii (Ctenoplana)

### Correct Option:
The correct sequence is:
- A4, B1, C2, D3