Any response of a plant to the relative lengths of light and darkness is referred to as:

a. gravitropism.
b. photoperiodism.
c. phototropism.
d. thigmotropism.
e. thigmomorphogenesis.


B

Biology & Microbiology

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A 2n cell from an organism has 40 chromosomes. How many chromosomes would be in a haploid gamete from this organism?

A) 46 B) 20 C) 40 D) 10 E) 80

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Ammonia is the most toxic of the three major forms of nitrogenous waste

A. true B. false

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What is heterozygote advantage? Provide one example of this and briefly explain. What will be an ideal response?

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