People who wear contact lenses or glasses have a defect in the
A) length of the eyeball.
B) iris.
C) blind spot.
D) cone cells.
E) rod cells.
A
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While looking at some seawater through your microscope, you spot the egg of an unknown animal. Which of the following tests could you use to determine whether the developing organism is a protostome or a deuterostome? See whether the embryo _____.
A) develops germ layers B) exhibits spiral cleavage or radial cleavage C) develops a blastopore D) develops an archenteron
Which of the following does not use a swim bladder to regulate buoyancy?
a. mackerel b. sea bass c. grouper d. sheepshead e. butterfly fish
Many organisms used in modern agriculture are a result of artificial selection
Indicate whether the statement is true or false
When club fungi reproduce sexually, which of the following occurs?
A) Two mushroom caps from different fungi exchange genes. B) Two spores merge into a seed that produces hyphae. C) Sperm and egg cells fuse. D) Nuclei from two different fungi fuse.