Explain why mutualism is sometimes viewed as ‘reciprocal exploitation’. What will be an ideal response?
ANSWER: In a mutualism, both species benefit from their interaction with each other. But, each species
is seeking to gain more benefit or give up less in the interaction. Thus, there is a constant
evolutionary battle between the two of how little can be given and how much taken before
the interaction fails.
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Select all of the following that are types of roots. Check all that apply.
_____ Tap. _____ Fibrous. _____ Adventurous. _____ Buttress.
Pituitary dwarfism may be caused by reduced production of:
a. mineralocorticoid b. glucocorticoid c. calcitonin d. growth hormone e. the parathyroid hormone
If a pea plant is heterozygous for yellow seeds (Yy), which gametes could it produce?
a. y only b. YYyy c. Y or y d. Y only e. Yy
The first hominin to have enough uniquely human features to be placed in the same genus as modern
humans is Homo erectus. ____________________ Indicate whether the statement is true or false.