Question

From Lamarck’s theory, giraffes have long necks because ______

• A. nature selected long trees
• B. humans preferred only long-necked ones
• C. of the sudden change of short to long necks
• D. stretching of necks over many years by short-necked ones

Answer 1

Answer:

D. stretching of necks over many years by short-necked ones

• According to Lamarck, giraffes were like horses.

• They only had a small neck and forelimbs.

• They lived in places where surface vegetation as very poor.

• So, they had to stretch their necks in order to gain food from long trees.

• Hence, they acquired long necks.