Multiciliated antherozoids occur in

Options

A. Riccia and Funaria
B. Pteris and Cycas
C. Riccia and Pteris
D. Marchantia and Riccia.

Answer

To determine where multiciliated antherozoids occur, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Multiciliated Antherozoids":**
- Antherozoids are male gametes (sperms) in plants.
- The term "multiciliated" indicates that these antherozoids have multiple flagella (tails) for movement.

2. **Identify the Options Given:**
- Option 1: Rissia and Haemorrhoea
- Option 2: Teres and Cycus
- Option 3: Rissia and Teres
- Option 4: Noctainchia and Rissia

3. **Analyze the Characteristics of the Plants:**
- Teres (Ferns) and Cycus (Cycads) are known to have multiciliated antherozoids.
- These plants are part of the group that produces biflagellated sperm, which is a characteristic of certain groups of plants, particularly in the pteridophytes (like ferns) and gymnosperms (like cycads).

4. **Eliminate Incorrect Options:**
- Rissia and Haemorrhoea, Rissia and Teres, and Noctainchia and Rissia do not typically produce multiciliated antherozoids.
- Therefore, we can conclude that these options are incorrect.

5. **Conclude the Correct Answer:**
- The correct answer is Option 2: Teres and Cycus, as these plants are known for having multiciliated antherozoids.

### Final Answer:
Multiciliated antherozoids occur in Teres and Cycus.

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