What is the main factor that will determine whether or not water can enter the root cells?
A. A lower osmotic pressure in the root tissues than the soil solution
B. Type of plant cells that are exposed to the water
C. A higher osmotic pressure in the root tissues than the soil solution
D. Volume of water available
Answer: A
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Match the type of microscopy with the appropriate characteristic.
A) uses a laser to view a single plane of a specimen B) detects electrons passing through a specimen C) light passes directly through specimen D) detects electrons deflected from the surface of the specimen E) shows specific molecules F) amplifies variations in density 1) Brightfield 2) Fluorescence 3) Phase-contrast 4) Confocal 5) Transmission electron microscopy 6) Scanning electron microscopy
An F1 organism is always homozygous
Indicate whether the statement is true or false.
A diffuse species interaction infers the effects of
A) predation by one species on another is strong. B) competition by one species on another is strong. C) competition by one species on another is weak. D) predation is stronger than those of competition.
Two mammals, a sheep and a goat, produce offspring. Only the F1 and F2 generations produce fertile offspring. This
occurs as a result of: a. mutation. b. hybrid sterility. c. microevolution. d. hybrid inviability. e. hybrid breakdown