Root hairs are the extensions of the
a. apical meristem.
b. epidermal cells.
c. pericycle.
d. vascular bundles.
e. root cap
B
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Which of the following is useful in biological systematics?
A. Epidemiology B. Ecology C. Physiology D. All of the choices are correct.
Which type of receptor is membrane-associated? (Select all correct choices.)
A. G protein-coupled receptor B. receptor kinase C. ligand-gated ion channel D. nuclear receptor
Which of the following characteristics are shared by all worm phyla?
A. Displaying bilateral symmetry B. Being heterotroph C. Having tissues D. All of the above are characteristics shared by all worm phyla
In accordance with the Hardy-Weinberg concept, a population with 80% dominant (A) alleles and 20% recessive (a) alleles would have ____ heterozygous individuals.
A. 4% B. 16% C. 32% D. 64%