The two major forces contributing to allopatric speciation are:a
mutation and natural selection.
b. natural selection and migration.
c. nonrandom mating and migration.
d. natural selection and genetic drift.
e. genetic drift and mutation.
D
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Angiosperm tracheids move water more rapidly from roots to shoots than gymnosperm tracheids
Indicate whether the statement is true or false.
Chloroplasts most resemble _____
a. archaeans b. aerobic bacteria c. cyanobacteria d. early eukaryotes
The ciliary muscle
a. controls the eardrum. b. controls the shape of the lens to allow focusing. c. holds the bones of the middle ear in place. d. enables the eyeball to move so that a person may see an object without moving the head. e. is responsible for the size of the pupil in different light intensities.
To which Phylum do humans belong?
a. Animalia b. Chordata c. Vertebrata d. Mammalia e. Homo sapiens