The accompanying figure represents Lack's hypothesis on clutch size. According to this hypothetical data, ________
A) the probability of survival for individual nestlings decreases linearly with each successive increase in the clutch size
B) the probability of survival for individual nestlings increases, then decreases with each successive increase in the clutch size
C) the optimal clutch size in terms of survival rates is intermediate
D) A and C are both true.
E) All of the above are true.
D
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People with Turner syndrome have ________ chromosome constitution.
A) XX B) XXY C) XO D) XXX
The mature body form of the sporophyte of a typical ____ has fronds growing from a rhizome, with
sori on the lower surface or margins of some of the fronds.
a. moss b. whisk fern c. fern d. club moss e. horsetail
What are the only mammals that lay eggs?
A. monotremes B. placentals C. marsupials
Which term refers to the selectively permeable barrier that is present in the innermost layer of the root cortex?
a. pericycle b. root hairs c. endodermis d. quiescent centre