Q.

Which of the following statements about cilia and flagella is incorrect?

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a

The core of cilia and flagella, called the axoneme, contains microtubules arranged in a 9+2 pattern.

b

Cilia and flagella in eukaryotic cells have a 9+0 arrangement of microtubules.

c

Both cilia and flagella are covered with a plasma membrane.

d

Prokaryotic and eukaryotic flagella have different structures.

answer is A.

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Detailed Solution

The axoneme (core of cilia and flagella) usually has nine doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules. Such an arrangement of axonemal microtubules is referred to as the 9+2 array.

Centrioles in eukaryotic animal cells have a 9+0 arrangement of microtubules.

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