In chordates, which mesoderm structure forms during gastrulation and provides structural rigidity along the dorsal anterioposterior axis of the embryo?

A. Archenteron
B. Neural tube
C. Notochord
D. Epidermis
E. Intestinal tract


C. Notochord

Biology & Microbiology

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As a population approaches its carrying capacity, how does its growth change? Use Figure 46.5 in your text if you need help

A. The growth rate slows until N is 0. B. The growth rate slows until N is close to K. C. The growth rate slows until N is close to r. D. The growth rate stays the same. E. r changes until it is close to K.

Biology & Microbiology

Some chaparral plants have ____ seeds that only sprout after being exposed to fire

a. inedible b. fire-resistant c. aromatic d. flammable e. drought-resistant.

Biology & Microbiology

Bacteria in the intestinal tract prevent

pathogens from causing disease by a. crowding them out. b. eating other bacteria. c. producing protein traps to kill them. d. submerging them in acid in the stomach. e. doing all of these.

Biology & Microbiology

____________ are microorganism that are not included in phylogenetic trees because they are acellular.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology