Biology, Eighth Edition (Raven)

Chapter 40: Plant Defense Responses

Pre Test

1
What is the first line of defense for plants against exploitation from other organisms? (p. 790).
A)Stomatal closure
B)They keep axillary buds as a reserve in case a terminal bud is injured.
C)The dermal tissue secretes wax and cutin.
D)Formation of allelopathic chemicals
E)Vascular tissue is kept internal to bark and cortex.
2
What role do tannins play in protecting plants from herbivores? (p. 792)
A)They overstimulate the herbivore's nervous system.
B)They're toxic.
C)Tannins are similar to neurotransmitters, causing hallucinations.
D)They provide "gateways" to alternative metabolic pathways which result in the herbivore becoming ill.
E)Proteins bind to tannins and lose or reduce their effectiveness in normal metabolism.
3
What is the force which causes plants and mutualistic "protectors" to benefit from each other? (p. 795)
A)Convergent evolution
B)Homologous structures
C)Analogous structures
D)Artificial selection
E)Coevolution
4
Organize the following steps into their appropriate order for a plant systemic response (p. 796)
  1. Systemin is released from damaged tissue
  2. Receptors to the wound signal causes release of jasmonic acid
  3. The wound signal moves through the apoplast to vasculature
  4. Jasmonic acid produces proteinase inhibitors
A)III, I, IV, II
B)I, III, II, IV
C)III, I, IV, II
D)II, I, III, IV
E)I, II, III, IV
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