Survival and response Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. Which structure is the coordinator in a withdrawal reflex?
- A. Pain receptor
- B. Sensory neurone
- C. Relay neurone in the spinal cord
- D. Muscle in the arm
2. A shoot is lit from the left. Where is the IAA concentration highest?
- A. On the left side
- B. On the right side
- C. At the base only
- D. Evenly spread
3. What is the effect of a high concentration of IAA on the cells on the lower side of a horizontal root?
- A. Stimulates elongation
- B. Inhibits elongation
- C. Stops cell division in the shoot
- D. No effect
4. Which behaviour is a kinesis?
- A. An alga swimming straight towards a light
- B. Woodlice slowing down and turning less as air becomes more humid
- C. A hand withdrawing from a hot object
- D. A shoot bending to the light
5. A student uses a choice chamber and puts 30 woodlice in the middle. After 10 minutes 21 are in the humid half. What is the percentage in the humid half and the best interpretation?
- A. 21%, a random result
- B. 70%, woodlice respond to humidity
- C. 30%, woodlice avoid humidity
- D. 70%, it proves a taxis