Double fertilization in an angiosperm produces
A. a triploid embryo and a diploid endosperm.
B. a diploid zygote and a triploid endosperm.
C. a diploid zygote and a haploid polar nucleus.
D. a diploid embryo and a triploid zygote.
E. a diploid zygote and a diploid endosperm.
Answer: B
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Indicate whether the statement is true or false.
Which of the following is released by cells lining blood vessels and causes a decrease in blood
pressure? a. histamine b. acetylcholine c. cyclic AMP d. nitric oxide e. prostaglandin
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