Which of these is not a possible function of trichomes?
A. reflect light from leaf surfaces
B. store or secrete salt
C. defend against insects
D. structural support
E. irritate potential herbivores
D. structural support
Since trichomes are an external feature of plants found on stems, leaves and the reproductive organs, they are not involved with structural support.
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In the neritic zone, a 10-milliliter sample of surface water can contain ____ of multicellular planktonic organisms
a. hundreds b. thousands c. millions d. billions e. trillions
What is the birth rate in a population in which 35 babies are born per every 1000 people in the population each year?
A) 0.35 B) 35% C) 3.5% D) 0.35%
Cellulose microfibrils give the plant cell wall its tensile strength.
a. true b. false
If DNA of a particular species was analyzed and it was found that it contains 27 percent of adenine (A), what would be the percentage of cytosine (C)?
a. 27 percent b. 30 percent c. 23 percent d. 54 percent