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NEETZoologyStructural Organisation in Animals

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In all connective tissues except blood, the cells secrete fibres of structural proteins called collagen or elastin. Reason (R): Blood is a fluid connective tissue containing plasma, red blood cells (RBC), white blood cells (WBC) and platelets. In the light of the above statements, choose the most a

Options

  1. ABoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A)
  2. BBoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A)
  3. CAssertion (A) is true but Reason (R) is false
  4. DAssertion (A) is false but Reason (R) is true

Correct answer

B. Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A)

Step-by-step solution

Assertion (A) is true as in all connective tissues except blood, the cells (like fibroblasts) secrete fibres of structural proteins called collagen or elastin. Reason (R) is also true as blood is a fluid connective tissue containing plasma, red blood cells (RBC), white blood cells (WBC) and platelets. However, Reason (R) does not explain Assertion (A). The reason blood does not secrete fibres is due to the absence of fibre-secreting cells (fibroblasts), not merely because it contains plasma and blood components. Th

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