Which of the following is an important difference between lichen and plant physiology?
a. Lichens are photosynthetic.
b. Lichens contain chlorophyll.
c. Lichens grow slowly.
d. Lichens do not control water loss.
Ans: d. Lichens do not control water loss.
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A diagnosis of tuberculosis involves a/an ________.
A. tuberculin skin test B. sputum culture C. chest X ray D. acid-fast stain of sputum E. All of the choices are correct.
Land dwelling insects do not have the ability to excrete ammonia so instead they will convert it into ________
a. urea b. urine c. plasma d. water e. uric acid
Which of the following is ABSENT in the charophyte ancestors of land plants?
a. spores b. gametes c. multicellular organs d. diploid embryos e. chlorophyll b
True-breeding yellow guinea pigs crossed with true-breeding white ones produce only cream-colored offspring. This
pattern indicates incomplete dominance. Rough hair is found to be dominant to smooth hair. Give the F1 and F2 genotypic and phenotypic ratios of a cross of a smooth, white guinea pig with a homozygous, rough, yellow guinea pig. What will be an ideal response?