Question

15. What example will you give to prove that Lamarckism is not correct?
16. What is a Reflex arc ?​

Answer 1

Answer:

1. Lamarck has not proved experimentally that use and disuse of organs can modify them.
2. It is absolutely incorrect that the new organs can be developed according to need and wish of an organism

Explanation:

15)

according to the German "Weismann" (who was a biologist),the reproductive i.e. germ cells of any organism is always distinct and were separate from the body / somatic cells. Hence, changes in the somatic cells (in case of Giraffe, it will be the neck soma cells of his body which got starched dur to repetitive pulling action of neck for reaching the leaves of tall trees) would not affect the germ-plasma cells. so would not be passed to offspring.

16)

reflex arc the nervous connections between RECEPTOR and EFFECTOR that result in a simple response being elicited by a specific stimulus (a reflex action.

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