`{:("Organisms","Sexually"),("Chara","Monoecious"),("Cucurbits","Dioecious"),("Cycas",),("Pinus",):}`

Options

A. a-I, b-II, c-I, d-II, e-I
B. a-II, b-I, c-II, d-I, e-II
C. a-I, b-II, c-I, d-I, e-II
D. a-II, b-I, c-I, d-I, e-II

Answer

To solve the question regarding the sexual reproduction types of the organisms listed, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Monoecious**: Organisms that have both male and female reproductive organs in the same individual. They are often referred to as hermaphrodites.
- **Dioecious**: Organisms that have male and female reproductive organs in separate individuals.

2. **Identify Each Organism**:
- **Chara**: This is a genus of green algae.
- **Cucurbits**: This refers to the gourd family, which includes plants like pumpkins and cucumbers.
- **Cycas**: This is an ancient gymnosperm.
- **Pinus**: This refers to pine trees, which are also gymnosperms.

3. **Determine the Sexuality of Each Organism**:
- **Chara**: It is a monoecious organism because it has both male and female reproductive structures in the same individual.
- **Cucurbits**: These are also monoecious, as they contain both male and female flowers on the same plant.
- **Cycas**: This is a dioecious organism, meaning that it has separate male and female plants.
- **Pinus**: This is a monoecious organism, as it produces both male and female cones on the same tree.

4. **Summarize the Findings**:
- **Chara**: Monoecious
- **Cucurbits**: Monoecious
- **Cycas**: Dioecious
- **Pinus**: Monoecious

5. **Final Answer**:
- Chara - Monoecious
- Cucurbits - Monoecious
- Cycas - Dioecious
- Pinus - Monoecious