The structure in the eye that focuses light on photoreceptors is the __________
a. cornea
b. pupil
c. iris
d. lens
e. ciliary muscle
D
Biology & Microbiology
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Two organisms that both benefit from each other are in a symbiotic relationship called
A) ammensalism. B) commensalism. C) mutualism. D) parasitism.
Biology & Microbiology
Which of the following is false about marine plants?
a. They are common in protected bays. b. They have xylem and phloem tissues. c. They are found only in tropical areas. d. They produce seeds.
Biology & Microbiology
In which stage do chromosomes align at the equator?
What will be an ideal response?
Biology & Microbiology
What is the primary original source of genetic variation in a population?
A) mutation B) genetic drift C) blending inheritance D) cloning
Biology & Microbiology