Which of the following is the main form of nitrogenous wastes released by birds to their environment?
a. nitrate
b. ammonia
c. uric acid
d. amino acids
e. urea
C
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In gymnosperms and angiosperms, a plant embryo (young sporophyte) packaged with a food supply in a tough outer coat is a
A. sperm. B. seed. C. pollen grain. D. gemmae. E. fruit.
The allele for albinism (c) is recessive to the allele
for normal pigmentation (C). A normally pigmented woman whose father is an albino marries an albino man whose parents are normal. They have three children, two normal and one albino. Give the genotypes for each person listed. What will be an ideal response?
The process of aging is described by the term ____
a. senescence b. puberty c. neonate d. morulation e. fetalism
Small birds must eat more frequently than large birds in order to maintain their body temperature. This is because:
A. large birds are cold-blooded. B. small birds are cold-blooded. C. small birds have a lower surface area to volume ratio than large birds. D. small birds have a higher surface area to volume ratio than large birds.