Deep sea fishes have problems seeing in dim light. Which of the following ratios of lens surface area to retinal surface area would be best for deep sea vision?
A. 1:3
B. 1:1
C. 2:1
D. 1:2
E. 3:1
Examine the illustration of a segment of a muscle cell. How many myofilaments are illustrated?
(Can't post the pic, but it has: Z m Z m Z
____ l ____ ____ l ____
____ l ____ ____ l ____
H
I
A
A. 4
B. 12
C. 1
D. 2
E. 16
Which of the following features is characteristic of spores?
A. They are formed only by mitosis.
B. They are formed only by meiosis.
C. They form plants termed sporophytes.
D. They are produced by plants termed sporophytes.
E. They fuse to form zygotes.
Gerome is studying survival and adaptation of a lizard species that reproduces parthenogenetically, producing females only. If significant climate change were to occur, what might be the prognosis for this species?
A. Low genetic variability may result in a major die-off.
B. The lack of a need for finding mates would enable survival under any climatic conditions.
C. High genetic variability would favor survival of those genotypes capable of surviving in the new climate.
D. Hermaphroditism would result in the ready availability of mates.
E. The lack of a need for gametes would allow rapid reproduction.
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