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  4. Assertion (A) In frog's vascular system, the composition of lymph is same as that of the blood. Reason (R) In frog, lymph lacks RBCs and few proteins.

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Q. Assertion (A) In frog's vascular system, the composition of lymph is same as that of the blood.
Reason (R) In frog, lymph lacks RBCs and few proteins.

Structural Organisation in Animals

Solution:

Assertion is false, but Reason is true. Assertion can be corrected as
In frog's vascular system, the composition of lymph is different from that of blood. Blood consists of fluid, plasma and three types of corpuscles (RBCs, WBCs and platelets) dissolved in it.
However, lymph is a fluid filtered out from the blood through capillaries and does not contain RBCs and some proteins. Thus, it differs from blood in composition.