CBSE Class 10 Science 2020 · Paper 31/4/1 · Question 19
Define geotropism. Draw a labelled diagram of a plant showing geotropic movements of its parts.
Answer
Geotropism is growth of a plant part in response to gravity; roots are positively geotropic and shoots negatively geotropic.
Geotropism: the movement, by growth, of a part of a plant in response to gravity. Roots grow downwards, towards gravity, and are positively geotropic; shoots grow upwards, away from gravity, and are negatively geotropic.
Diagram: a potted plant laid on its side, with the shoot bending upward (labelled negatively geotropic) and the roots bending downward (labelled positively geotropic), as in the figure.
🔒 Step-by-step solution
Sign up free to see every step of how it is worked out.
From the board papers
More questions from Control and Coordination
Class 10 Science — every question with an expert-verified, step-by-step solution.
- Q1 Which of the following is a plant hormone?
- Q1 What is the difference between a reflex action and walking?
- Q2 The gap between two neurons is called a
- Q2 What happens at the synapse between two neurons?
- Q3 The brain is responsible for
- Q3 Which part of the brain maintains posture and equilibrium of th…
- Q4 What is the function of receptors in our body? Think of situations…
- Q4 How do we detect the smell of an agarbatti (incense stick)?
- Q5 Draw the structure of a neuron and explain its function.
- Q5 What is the role of the brain in reflex action?
- Q6 How does phototropism occur in plants?
- Q7 Which signals will get disrupted in case of a spinal cord injury?
All 286 questions on Control and Coordination → Browse all Science chapters →