The type of plant hormone primarily responsible for inhibiting leaf abscission is/are ____
a. gibberellins
b. ethylene
c. jasmonates
d. abscisic acid
e. auxins
ANSWER: e
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Bats use high ultrasonic sounds to perceive their environment via a process known as ____
a. sound reflection navigation b. extrasensory perception c. echolocation d. ultralocation e. auditory navigation
The size at which a population stabilizes in a particular place is defined as the __________ for that species.
A. growth potential B. optimum C. range D. carrying capacity
If water were being pushed from below, air bubbles in the xylem stream would not pose a problem. However, the observation that air bubbles can interrupt xylem function provides important evidence supporting the _______ theory of water movement.
A. gravity-suction B. active transport C. pressure-flow D. osmotic E. cohesion-tension
In fungi, aseptate hyphae are coenocytic by definition
Indicate whether the statement is true or false