Which of the following statements about root cap is FALSE?
a. It protects the delicate root apical meristem
b. It secretes lubricating polysaccharides
c. It orients the root that it grows downward
d. It loses cells during root growth.
e. It absorbs nutrients.
E
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Four of the five choices listed below describe the
heterozygous condition. Select the exception. a. homozygous b. carrier c. heterozygotes d. hybrid e. Aa
Endocrine and exocrine glands are derived from what type of tissue?
a. muscle b. nerve c. endocrine d. epithelial e. connective
Which of the following defines the essential gene set of an organism such as a species of yeast?
A) genes that, when mutated, reduce the growth of a heterozygous organism B) genes whose deletion alleles are not found among haploid offspring C) the fewest genes that, when mutated, result in slow growth in optimal environments D) genes whose mutations result in haploinsufficiency E) genes that, when mutated, are either lethal or conditionally lethal in special environments
____ is the least frequent of the dispersal patterns seen in nature
a. Random dispersion b. Aggregated distribution c. Uniform dispersion d. Density-dependent distribution e. Clumped dispersion