The halo that is observed around the glass fragment in the oil immersion method is known as the ____ line.

What will be an ideal response?


Becke

Biology & Microbiology

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The ____ has a digestive tract

a. coral b. earthworm c. flatworm d. hydra e. sea anemone

Biology & Microbiology

The intermediate disturbance hypothesis says that species richness is least in a community that has

moderate disturbances.

Indicate whether the statement is true or false.

Biology & Microbiology

In contrast to most other plant hormones,

which hormone is a germination inhibitor?

a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene

Biology & Microbiology

Which of the following statements best explains why dominant alleles that cause lethal disorders are less common than recessive alleles that cause lethal disorders?

A) Lethal disorders caused by dominant alleles are usually more severe than lethal disorders caused by recessive alleles. B) Unlike lethal disorders caused by recessive alleles, lethal disorders caused by dominant alleles usually cause the death of the embryo. C) Most individuals carrying a lethal dominant allele have the disorder and die before they reproduce, whereas individuals carrying a lethal recessive allele are more likely to be healthy and reproduce. D) The presence of a lethal dominant allele causes sterility.

Biology & Microbiology