Read the following statements carefully and select the correct ones.
() Alfred wallace, a naturalist who worked in Malay Archipelago had also come to similar conclusions as Darwin around the same time.
(ii) August Weismann by carefull experimentation demonstrated that life comes only from pre-existing life.
(iii) The organs which have the same fundamental structure but are different in functions are called homologous organs.
(iv) Rate of appearance of new form is inversely proportional to life spain of organism.

Options

A. i and iii
B. i and ii
C. ii and iv
D. iii and iv

Answer

A

Explanation

Louis pasteur by careful experimentation demonstrated that life comes only from pre-existing life. Rate of appearance of new forms is directly proportional to life span of organism. Microbes that divide fast evolve fast. For same process to occur in fish or fowl will take miltion of years.