If a farmer wanted more loosely packed clusters of grapes, he would most likely spray the immature bunches with _____
A) auxin
B) gibberellins
C) cytokinins
D) abscisic acid
B
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A particular sea bird has a Type 1 survival curve, and older female birds produce more eggs than younger birds. What is an evolutionary strategy of these birds?
a. young birds reach maturity rapidly b. reproduction is delayed c. birds reach maturity slowly d. both a and b e. both b and c
Mammals descended from a group of reptiles known as:
a. eutherians. b. lancelets. c. therapsids. d. holothurians. e. labyrinthodonts.
Which of the following statements about nucleic acids is FALSE?
a. DNA is double-stranded; RNA is single-stranded. b. "DNA contains carbohydrates; RNA contains amino acids." c. DNA contains deoxyribose; RNA contains ribose. d. DNA functions as the genetic material; RNA functions in protein synthesis.
Choose the letter of the best match from the following:A. Birth control pillB. Intrauterine deviceC. DiaphragmD. Foams and jelliesE. VasectomySperm blockage.
Fill in the blank(s) with the appropriate word(s).