REVIEW & REHEARSE 19 PLANTS RESPOND TO THEIR ENVIRONMENTS

!ques1! Check Your Knowledge

Question 19.11

Flowers or leaves that fold up in response to touch are most likely exhibiting:

  • a) a chemical defense.
  • b) a mechanical defense.
  • c) mimicry.
  • d) a mutualism with defensive insects.
  • e) camouflage.

Question 19.12

What adaptations have occurred in desert plants that reduce the impact of the hot, dry environment?

  • a) thick, fleshy, water-storing leaves and stems
  • b) a strong and deep taproot
  • c) seeds that can remain dormant for long periods of time
  • d) All of the above are correct.
  • e) Only a) and c) are correct.

Question 19.13

Which of the following is not a plant defense mechanism?

  • a) sticky sap
  • b) thorns
  • c) mimicry
  • d) toxin secretion
  • e) increased nitrogen concentrations