Question

According to Lamarckism, long-necked giraffes evolved, because

• A. Of stretching of necks over many generations by short-necked ones
• B. Humans preferred only long-necked giraffes
• C. Short-necked giraffes suddenly changed into long-necked ones
• D. Nature selected only long-necked giraffes

Answer 1

The correct option is A Of stretching of necks over many generations by short-necked ones

Lamarck's theory of use and disuse explains the evolution of giraffe with a long neck. Giraffe stretched their neck to reach high branches. The excessive use of the neck helped it to evolve giraffe with a long neck.

So, the correct answer is option A.