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Which of the above statement is incorrec...

Which of the above statement is incorrect ?

A

The body of Platyhelminthes bears suckers and most of them are endoparasites.

B

The sedentary from of coelentrata is polyp.

C

Closed circulatory system respiratory pigment dissolved in plasma and setae are the unique features of annelida.

D

Spiny skin, closed circulatory system and developed sense organs are present in echinodermata .

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement is incorrect, we will analyze each of the four statements provided in the question. ### Step-by-Step Solution: 1. **Analyze the First Statement:** - The first statement claims that the body of platyhelminth bears suckers and most of them are endoparasites. - Platyhelminthes, or flatworms, do indeed have suckers and many are endoparasites (e.g., tapeworms and liver flukes). - **Conclusion:** This statement is correct. 2. **Analyze the Second Statement:** - The second statement mentions that the sedentary form of cylindrita is a polyp. - In the context of cnidarians, a polyp is a cylindrical body form that is indeed sedentary (fixed to a surface). - **Conclusion:** This statement is also correct. 3. **Analyze the Third Statement:** - The third statement states that the closed circulatory system, respiratory pigment dissolved in the plasma, and setae are unique features of Annelida. - Annelids (like earthworms) do have a closed circulatory system, and their respiratory pigment (hemoglobin) is dissolved in the plasma, along with chitinous setae present on their bodies. - **Conclusion:** This statement is correct as well. 4. **Analyze the Fourth Statement:** - The fourth statement claims that spiny skin, a closed circulatory system, and developed sense organs are present in echinoderms. - Echinoderms (like starfish) have spiny skin and developed sense organs, but they do not have a closed circulatory system; instead, they possess an open circulatory system where blood bathes the tissues. - **Conclusion:** This statement is incorrect. ### Final Answer: The incorrect statement is **Option 4**. ---
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