When monocots, such as rice and oats, are cultivated and milled by humans, what part of the seed remains for
consumption?
a. endosperm
b. bran
c. seed coat
d. embryo
e. cotyledon
ANSWER: a
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Birds that live in marine environments, and thus lack access to fresh drinking water, _____
A) osmoregulate without using a transport epithelium for this purpose B) drink seawater and secrete excess ions through their kidneys only C) drink seawater and secrete excess ions mainly through their nasal salt glands D) have plasma that is isoosmotic to ocean water E) obtain water by eating only osmoregulating prey
The process by which the base sequence of an RNA molecule is used to direct the synthesis of a protein is called
A. reverse transcription. B. translation. C. replication. D. transcription.
Class Reptilia includes all reptiles, and Class Aves includes all birds. However, a cladistics approach would place birds in the same class with reptiles. Why would a cladistician classify birds and reptiles in a single class despite the behavioral and physical differences between the two?
What will be an ideal response?
One of the functions of skin is the synthesis of vitamin D. Which of the following would be evidence for this function?
A) Vitamin D levels are higher in people who take supplements, such as multivitamins. B) Vitamin D levels are lower in people who wear sunscreen. C) Cancer rates are higher in people with more sun exposure. D) People living in the tropics are vitamin D deficient.