________ is a chemical message sent by another individual.
a. Pheromone
b. Proprioception
c. Thermoception
d. Phenome
Answer: a. Pheromone
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What characteristic of short tandem repeats (STRs) DNA makes it useful for DNA fingerprinting?
A) The number of repeats varies widely from person to person or animal to animal. B) The sequence of DNA that is repeated varies significantly from individual to individual. C) The sequence variation is acted upon differently by natural selection in different environments. D) Every racial and ethnic group has inherited different short tandem repeats.
If auxin transport was limited at shoot tips, what would occur?
A. It would have no effect on leaf formation. B. It would result in increased formation of leaf primordia at many locations. C. Leaf primordia formation would be limited to the cells where auxin was transported. D. No new leaves would form.
The shelled egg of reptiles prevents the egg from dehydrating
Indicate whether the statement is true or false
The slender stalk that connects the flattened leaf blade to the stem in most eudicots is the
A. vein. B. stele. C. receptacle. D. meristem. E. petiole.