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A passive hydathode comprises a group of...

A passive hydathode comprises a group of loosely arranged colourless and parechymatous cells known as

A

spongy parenchyma

B

aerenchyma

C

epithem

D

prosenchyma

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To answer the question regarding the passive hydathode and the type of cells it comprises, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Hydathodes**: - Hydathodes are small pores located on the margins of leaves. They play a role in the process of guttation, which is the exudation of water droplets from the plant. 2. **Cell Type in Hydathodes**: - The cells that make up the hydathode are characterized as being loosely arranged and colorless. These cells lack chlorophyll, which is why they are referred to as "achlorophyllous." 3. **Identifying the Correct Term**: - The specific type of cells that form the hydathode is known as "epithem." This term describes the parenchymatous cells that are involved in the function of the hydathodes. 4. **Conclusion**: - Therefore, the answer to the question is that a passive hydathode comprises a group of loosely arranged colorless and parenchymatous cells known as **epithem**. ### Final Answer: A passive hydathode comprises a group of loosely arranged colorless and parenchymatous cells known as **epithem**. ---
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