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Question
Assertion :The arrangement of axonemal microtubules in cilia or flagella is called 9+2 array. Reason: The axoneme usually has nine pairs or doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules.
Assertion :The arrangement of axonemal microtubules in cilia or flagella is called 9+2 array. Reason: The axoneme usually has nine pairs or doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The study of a cilium or the flagellum shows that they are covered with plasma membrane. Their core is called axoneme, it possesses a number of microtubules running parallel to the long axis. The axoneme usually has nine pairs of doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules. Such an arrangement of axoenmal microtubules is referred to as the 9+2 array. So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.
The study of a cilium or the flagellum shows that they are covered with plasma membrane. Their core is called axoneme, it possesses a number of microtubules running parallel to the long axis. The axoneme usually has nine pairs of doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules. Such an arrangement of axoenmal microtubules is referred to as the 9+2 array. So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.
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