Question

Needles not leaves bark cracked and gray growth pattern treelike height between 20 and 30 feet sheds needles in dry conditions The list of traits describes a typical pine tree. Which trait is caused by the environment, not genetics?

A) bark cracked and gray

B) tree like growth pattern

C) sheds needles in dry conditions

D) height varies between 20 and 30 feet
Eliminate

Answer 1

Option C - sheds needles in dry conditions

All physical factors such as length, colour, width, patterns are genetically controlled factors however, the needles response to the weather of extreme dryness, is through the falling of leaves, this is an evidence of response of the needle leaves towards an environmental parameter.