The stomata of leaves are usually open in
a) light if a plant has enough water.
b) light if a plant has too little water.
c) darkness if a plant has enough water.
d) darkness if a plant has too little water.
Ans: a) light if a plant has enough water.
You might also like to view...
We expect the fossil record to be incomplete for all of the following reasons EXCEPT:
A. All biomolecules, including lipids and pigment molecules, decay immediately after death. B. Fossilization requires burial in sediment. C. Sediments accumulate irregularly. D. Organisms with hard parts tend to fossilize more readily than soft-bodied organisms. E. Under normal conditions, organisms are broken down by biological and physical processes.
The brain almost exclusively uses blood glucose as its main energy source. This glucose comes from:
What will be an ideal response?
Clostridium perfringens infections are commonly associated with:
A. antibiotic treatment. B. immunosuppression. C. preexisting lung disease. D. contamination of wounds. E. consumption of water contaminated with sewage.
Three-quarters of the substantial amount of energy consumed by the brain is used to run a single molecular machine that maintains the resting potential of neurons. What is this machine called?
A. Voltage-gated sodium channel B. K+ leak channel C. Sodium-potassium pump D. Voltage-gated calcium channel E. Acetylcholine receptor