Question 1:
State the definition of tropism.
Answer:
Tropism is the responses of certain parts of a plant such as roots or shoots that respond towards or away from a stimulus.
State the definition of tropism.
Answer:
Tropism is the responses of certain parts of a plant such as roots or shoots that respond towards or away from a stimulus.
Question 2:
List three types of tropism.
Answer:
Thigmotropism, hydrotropism, geotropism, chemotropism and phototropism.
List three types of tropism.
Answer:
Thigmotropism, hydrotropism, geotropism, chemotropism and phototropism.
Question 3:
Justify phototropism in plants.
Answer:
Positive phototropism ensures leaves get the optimum amount of sunlight to increase the rate of photosynthesis.
Justify phototropism in plants.
Answer:
Positive phototropism ensures leaves get the optimum amount of sunlight to increase the rate of photosynthesis.
Question 4:
Danish discovered that the mimosa leaves fold up when a flame from a lighter was held close to its leaves. Explain this observation.
Answer:
The mimosa plant is responding to heat, which is thermonasty.
Danish discovered that the mimosa leaves fold up when a flame from a lighter was held close to its leaves. Explain this observation.
Answer:
The mimosa plant is responding to heat, which is thermonasty.