Why do plants produce less oxygen during the night?
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a. cellul respiration stops at night.
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b. cellular respiration only occurs at night.
o
o
c. photo ynthesis only occurs at night.
d. photosynthesis stops at night.

Apea plant that is heterozygous for the tall phenotype can produce short offspring when self pollinating. which of the following explains why this occurs? a. segregation of allels b. condominance of traits c. polygenic expression of traits d. independent assortment of alleles

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra