Question

engineers increase output in crop production by combining the strengths of two plants. this can be done by using one plant to pollinate a different plant so that their strengths are combined into a new plant. what is this technique called?

a. composite materials
b. chemical alteration
c. ethical dilemmas
d. crossbreeding

Explanation:

• Option A: Composite materials are about combining different materials (not plants) to get new material properties, so A is wrong.
• Option B: Chemical alteration involves changing a substance's chemical structure, not plant pollination to combine strengths, so B is wrong.
• Option C: Ethical dilemmas are about moral conflicts, not a plant - breeding technique, so C is wrong.
• Option D: Crossbreeding is the process of breeding two different plants (by pollination, for example) to combine their desirable traits in a new plant, which matches the description in the question.

Answer:

D. Crossbreeding