In oviparous, fertilized egg is covered by

Options

A. Thick wall spores
B. Mucilagenous covering
C. Calcareous shell
D. None of these

Answer

To answer the question, "In oviparous, fertilized egg is covered by," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Oviparous":**
- Oviparous refers to organisms that lay eggs. These organisms do not give birth to live young; instead, they produce eggs that develop outside the mother's body.

2. **Identify Examples of Oviparous Animals:**
- Common examples include birds and reptiles. Both of these groups lay eggs that contain fertilized embryos.

3. **Examine the Structure of the Fertilized Egg:**
- The fertilized eggs of oviparous animals are typically protected by a covering. This covering is crucial for the survival of the embryo.

4. **Determine the Type of Covering:**
- The covering of fertilized eggs in oviparous animals is usually hard and calcareous (made of calcium carbonate). This hard shell provides protection against physical damage and environmental factors.

5. **Review the Options Given:**
- The options provided are:
- Thick-walled spores
- Mucilaginous covering
- Calcareous shell
- None of these
- Among these, the calcareous shell is the correct answer as it is the characteristic covering for fertilized eggs in oviparous animals.

6. **Conclude the Answer:**
- Therefore, the correct answer to the question is that in oviparous animals, the fertilized egg is covered by a calcareous shell.

### Final Answer:
In oviparous, the fertilized egg is covered by a **calcareous shell**.

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