Since insects do not have blood or a closed circulatory system that needs to be filtered of waste, what do they have instead?
a. water
b. hemolymph
c. cytoplasm
d. They have no body fluid.
b. hemolymph
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In arid terrestrial environments, salt can accumulate in the soil because of
A. the selective uptake of water by plants. B. the activities of grazing animals. C. the precipitation of salt from dry air. D. the secretion of salt by plants. E. the settlement and evaporation of water.
Heat is considered a type of water pollution because it increases the amount of oxygen in the water, which leads to the death of plants and the overpopulation of animals
Indicate whether the statement is true or false
Horticulturists often use ________ and other growth regulators applied as a paste to plant cuttings to stimulate root formation.
A. ethylene B. abscisic acid C. auxin D. cytokinins
What portion of an illuminated plant cell would you expect to have the lowest pH?
a. nucleus b. cytosol c. chloroplast d. stroma of chloroplast e. thylakoid space