Archaeopteryx is believed to be the transition fossil between reptiles and birds because Archaeopteryx had feathers and
A. scales.
B. a pointed, elongated mouth that could evolve into a beak.
C. a long reptilian tail.
D. a tail similar to modern birds.
Answer: C
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According to the endosymbiont hypothesis,
a. most of the genes from the endocytosized bacteria moved to the nucleus. b. the host anaerobe became dependent on the endocytosized bacteria. c. the endocytosized bacteria became dependent on the host cell. d. the endocytosized bacteria were all photosynthetic. e. most of the genes from the endocytosized bacteria moved to the nucleus, the host anaerobe became dependent on the endocytosized bacteria, and the endocytosized bacteria became dependent on the host cell.
The hormone gibberellin reduces the damage caused
by fungal infections because of which of the following? a. Increased space between individual grapes increases air circulation and reduces fungi. b. It shrinks the internodes to reduce the number of clusters that touch. c. It increases the immune response of the plant. d. It stimulates a type of signaling molecule that shuts down all fungal growth. e. None of these are true.
The relative capacity if a pathogen to invade and harm host cells, or the degree of pathogenicity is _____
Fill in the blank(s) with the appropriate word(s).
During which process would a cell plate form?
A) cytokinesis in an animal cell B) cytokinesis in a plant cell C) mitosis in an animal cell D) mitosis in a plant cell