Which of the following describes the state of stomata in most plants?
a. They open during the night and close during the day.
b. They are nearly always open.
c. They are almost never open.
d. They are open during the day and close during the night.
Ans: d. They are open during the day and close during the night.
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Fifty-million sperm were examined for mutations in a specific gene and 100 mutations were found. What was the mutation rate for this gene?
A) 5 × 10?6 B) 50 × 10?6 C) 2 × 10?6 D) 2 × 10?5 E) 5 × 10?5
Detritivores are
a. bacteria. b. plants. c. fungi. d. animals. e. both bacteria and fungi.
A heterozygote for a trait exhibiting incomplete dominance will
a. express the dominant trait. b. express the recessive trait c. exhibit an intermediate phenotype. d. express both alleles.
A giant specimen of the multinucleate slime mold Physarum polycephalum had a surface area greater than 5.5 m2 but was only 1.1 mm in thickness. This is most likely what type of slime mold?
What will be an ideal response?