Which among the following statements is incorrect about nervous system in Mollusca?(a) Ganglia are present at important parts of body(b) All the mollusks exhibit cephalization(c) Many of them have eyespots that act as photoreceptors(d) The anterior head region has sensory tentacles that help in sense of touchThis question was posed to me in an online quiz.The above asked question is from Classification of Animal Kingdom into Different Phylum-4 topic in section Animal Kingdom of Biology – Class 11

Which among the following statements is incorrect about nervous system

1.	Which among the following statements is incorrect about nervous system in Mollusca?(a) Ganglia are present at important parts of body(b) All the mollusks exhibit cephalization(c) Many of them have eyespots that act as photoreceptors(d) The anterior head region has sensory tentacles that help in sense of touchThis question was posed to me in an online quiz.The above asked question is from Classification of Animal Kingdom into Different Phylum-4 topic in section Animal Kingdom of Biology – Class 11
Answer» Correct choice is (B) All the mollusks exhibit cephalization For explanation I would say: Most of the mollusks don’t exhibit cephalization. Ganglia are present at IMPORTANT parts of their body. Many of them have eyespots that act as PHOTORECEPTORS. The anterior HEAD region has sensory tentacles that help in sense of touch.

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