SAT Subject Biology Practice Question 47: Answer and Explanation

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Question: 47

1. Which of these plant forms are diploid?

I. Spore

II. Sporophyte

III. Gametophyte

A. I only
B. II only
C. III only
D. I and II
E. II and III

Correct Answer: B

Explanation:

Only the sporophyte is diploid. The sporophyte produces haploid spores, which divide mitotically to produce the gametophyte. The gametophyte produces haploid gametes.

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