ભદ્રંભદ્ર અને અંબારામ ક્યા કાર્ય માટે પ્રયાણ કરી રહ્યા હતા?
Answers
Answer:
The theory of use and disuse of organs says that the morphological
characters of organism develop because of specific activities that the
organisms perform. If some organ is not used it gets degenerated. If
excessively used, it develops. Thus, the morphological changes take place
due to activities or non-working of a particular body parts in an organism.
(b) Due to constant extension of neck to eat foliage from the top of the trees,
giraffe’s neck became long. Similarly, blacksmith has strong arms due to
constant work. The flightless ostrich and emu did not fly and hence their
wings became useless. Aquatic birds like swan and duck made their feet
suitable for swimming by living in water. Snake lost limbs as it tried
burrowing mode.
(c) Acquired characters are those characters which are obtained during the
lifetime by any organism and passed on to next generations
Explanation:
This is Answer