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Kidney-shaped covering of Dryopteris is...

Kidney-shaped covering of Dryopteris is

A

Ramentum

B

Placenta

C

Indusium

D

Sporophyll.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks for the kidney-shaped covering of Dryopteris, a type of fern. We need to identify the correct term from the provided options. 2. **Analyzing the Options**: - **Option 1: Ramentum**: This refers to scale-like leaves that cover the younger parts of the leaf and rhizome. It does not fit the description of a kidney-shaped covering. - **Option 2: Placenta**: This is a cushion-like structure where sporangia develop. It is not kidney-shaped and does not relate to the covering of Dryopteris. - **Option 3: Indusium**: This is specifically described as a kidney-shaped covering that protects the sori (clusters of sporangia) in ferns, including Dryopteris. This matches the description given in the question. - **Option 4: Sporophyll**: This refers to the leaf that bears the sporangia. It does not describe a covering, so it is not the correct answer. 3. **Identifying the Correct Answer**: After analyzing all options, we conclude that the correct answer is **Indusium**, as it is the kidney-shaped covering found in Dryopteris. 4. **Final Answer**: The kidney-shaped covering of Dryopteris is **Indusium**. ---
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