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Leaves of Mosses and Ferns are :-...

Leaves of Mosses and Ferns are :-

A

Analogous and homologous both

B

Analogous but not homologous

C

Homologous but not analogous

D

None of the above

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question about the leaves of mosses and ferns, we need to analyze the characteristics of these leaves and the terminology used to describe their relationships. ### Step-by-Step Solution: 1. **Understanding the Types of Leaves**: - Mosses and ferns are both types of non-flowering plants, but they belong to different groups. Mosses are bryophytes, while ferns are pteridophytes. - The leaves of mosses are typically small, simple, and often scale-like, while fern leaves (fronds) are usually larger, more complex, and divided into leaflets. 2. **Defining Analogous and Homologous Structures**: - **Analogous Structures**: These are structures that perform similar functions but have different evolutionary origins. For example, the wings of birds and insects are analogous; they serve the same function (flight) but are structurally different. - **Homologous Structures**: These are structures that share a common ancestry but may serve different functions. For example, the forelimbs of humans and whales are homologous; they have a similar structure but serve different purposes (manipulation vs. swimming). 3. **Analyzing the Options**: - **Option 1: Analogous and Homologous both**: This option is incorrect because mosses and ferns do not share a common structure. - **Option 2: Analogous but not homologous**: This option is correct. The leaves of mosses and ferns are structurally different (analogous) but serve similar functions (absorbing water and nutrients). - **Option 3: Homologous but not analogous**: This option is incorrect because the leaves do not share a similar structure. - **Option 4: None of the above**: This option is incorrect since we have identified the correct answer in option 2. 4. **Conclusion**: - The correct answer is that the leaves of mosses and ferns are analogous but not homologous. They have different structures but perform similar functions, such as absorbing water and nutrients. ### Final Answer: The leaves of mosses and ferns are **analogous but not homologous**.
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