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Choose a pair of statements true of Gymn...

Choose a pair of statements true of Gymnophiona
I. Skin contains minute dermal scales
II. Teeth are absent on both jaws
III. Vertebrae are numberous and amphicoelous.
IV. Fertilization is external.

A

II and III

B

II and IV

C

I and II

D

I and III

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the statements true of Gymnophiona, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Statement I: Skin contains minute dermal scales.** - Gymnophiona, also known as Apoda or Caecilians, have a long, slender, worm-like body and their skin does indeed contain minute dermal scales. - **Conclusion:** This statement is **true**. 2. **Statement II: Teeth are absent on both jaws.** - This statement is incorrect. Gymnophiona possess teeth on both jaws. - **Conclusion:** This statement is **false**. 3. **Statement III: Vertebrae are numerous and amphicoelous.** - Gymnophiona have numerous vertebrae that are amphicoelous, meaning they are concave on both ends. - **Conclusion:** This statement is **true**. 4. **Statement IV: Fertilization is external.** - This statement is incorrect. Gymnophiona exhibit internal fertilization, not external. - **Conclusion:** This statement is **false**. ### Final Answer: Based on the analysis, the correct pair of statements true of Gymnophiona are: - **I. Skin contains minute dermal scales.** - **III. Vertebrae are numerous and amphicoelous.** Thus, the answer is **D (I and III)**. ---
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