Which part of the human brain is responsible for:
(a) thinking
(b) picking up a pencil
(c) controlling blood pressure
(d) controlling hunger
(a) Thinking: The cerebrum is responsible for thinking, reasoning, and decision-making.
(b) Picking up a pencil: The motor cortex, located in the cerebrum, controls voluntary movements like picking up a pencil.
(c) Controlling blood pressure: The medulla oblongata controls autonomic functions like blood pressure.
(d) Controlling hunger: The hypothalamus is responsible for controlling hunger and other homeostatic functions.
| Class | 0 – 15 | 15 – 30 | 30 – 45 | 45 – 60 | 60 – 75 | 75 – 90 |
|---|---|---|---|---|---|---|
| Frequency | 11 | 8 | 15 | 7 | 10 | 9 |
Leaves of the sensitive plant move very quickly in response to ‘touch’. How is this stimulus of touch communicated and explain how the movement takes place?