In cnidarians, nematocysts are important in
a. food digestion.
b. excretion of wastes.
c. obtaining oxygen from the water.
d. obtaining prey.
e. movement.
D
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How did scientists determine that the shoot apical meristem (SAM) is genetically controlled?
A. They used Arabidopsis because its entire genome is known. B. They used a dwarf Arabidopsis that has a dwarf meristem. C. They discovered that the central zone cells of Arabidopsis do not function normally. D. They discovered that the central zone cells of Arabidopsis differentiate very quickly. E. Arabidopsis was not involved in this study.
The septum in a fungus is
A. the seventh cellular division. B. the seventh nucleus in a dikaryote cell. C. the seventh cell from the tip of the hypha. D. the demarcation between the mycelium and the fruiting body. E. a cross wall that separates hyphae into cells.
Which gland exerts primary control over the concentration of sugar in the blood?
A) liver B) pineal C) pancreas D) parathyroid
A higher concentration of solutes corresponds to a (higher/lower) concentration of water in a given solution
What will be an ideal response?