Match the columns I and II, and choose the correct combination from the options given.
`{:(,"Column I",,"Column II"),(i.,"Coconut",a.,"Monoecious"),(ii.,"Papaya",b.,"Dioecious"),(iii.,"Tapeworm",,),(iv.,"Earthworm",,):}`

Options

A. a-I, b-ii, a-iii, b-iv
B. b-I, a-ii, b-iii, a-iv
C. a-I, b-ii, a-iii, a-iv
D. a-1, b-2, c-3, d-4

Answer

To solve the question of matching Column I with Column II, we need to analyze each item in Column I and determine its corresponding classification in Column II.

### Step-by-Step Solution:

1. **Identify the Organisms in Column I:**
- (i) Coconut
- (ii) Papaya
- (iii) Tapeworm
- (iv) Earthworm

2. **Understand the Terms in Column II:**
- (a) Monoecious: Organisms that have both male and female reproductive organs.
- (b) Dioecious: Organisms that have distinct male and female individuals.

3. **Match Each Organism:**
- **Coconut (i)**: Coconut trees are monoecious because they have both male and female flowers on the same plant. **Match: (i) - (a)**
- **Papaya (ii)**: Papaya plants can be dioecious. Some plants are male, some are female, and only female plants produce fruit. **Match: (ii) - (b)**
- **Tapeworm (iii)**: Tapeworms are hermaphroditic, meaning they have both male and female reproductive organs. However, they are often classified as monoecious. **Match: (iii) - (a)**
- **Earthworm (iv)**: Earthworms are also hermaphroditic and possess both male and female reproductive organs, thus classified as monoecious. **Match: (iv) - (a)**

4. **Final Matching:**
- (i) Coconut - (a) Monoecious
- (ii) Papaya - (b) Dioecious
- (iii) Tapeworm - (a) Monoecious
- (iv) Earthworm - (a) Monoecious

### Correct Combination:
- (i) - (a)
- (ii) - (b)
- (iii) - (a)
- (iv) - (a)