✓ Board-verified
Science · 2026 · 4 marks
CBSE 2026 · Region 2 · Set 1 · Q15
Read the following passage and answer the questions that follow: A middle-aged person is facing some cognitive changes in himself. His early symptoms…
Read the following passage and answer the questions that follow : A middle-aged person is facing some cognitive changes in himself. His early symptoms included mild forgetfulness. For example, forgetting where he left his mobile or failing to find words to complete his sentences. He was facing problems in driving a car, climbing up and down the stairs, inserting a plug into an outlet. He slowly developed a sad mood and anxiety.
(a)
What are voluntary actions ?
(b)
Which part of the brain is responsible for precision of voluntary actions?
(c)
(i)
Explain the role of the medulla.
OR
(ii)
How do the animal muscles move ?
Marking-scheme solution
(a) Actions which are controlled by forebrain / Actions which are under our control and are performed according to our will.
(b) Cerebellum.
(c) (i) Regulates involuntary functions like heart rate/ blood pressure/ breathing / sneezing/ vomiting.
OR
(c) (ii) Animal muscles are made up of special proteins, that change both shape and arrangement in response to nervous electrical impulses, new arrangements of these proteins give the muscle cells a shorter form so, muscle cells move which help animals to move.
All Control and Coordination questions2026 question paperNCERT solutions: Control and CoordinationPractice Control and Coordination →
More from Control and Coordination
- Write the name and location of a hormone which helps a person to respond when chased by a dog. Mention the responses in the body which help him to…2024
- Assertion: In our actions of writing or talking, our nervous system communicates with the muscles. Reason (R): Cranial nerves and spinal nerves form…2025
- How is an electric impulse created in human nervous system? Identify the parts of a neuron which helps the nerve impulse to travel (i) towards the…2023
- (i) Define a reflex arc. Why have reflex arcs evolved in animals? Trace the sequence of events which occur, when you suddenly touch a hot object.…2024
- Identify an involuntary action from the following:2024
- Some plants like pea plants have tendrils which help them to climb up other plants. Explain how is it done. Name the plant hormone responsible for…2023
- How is brain protected in our body? A doctor finds in one of his patients that he is not maintaining a proper posture and balance of his body. State…2025
- Give reasons for the following: Adrenal gland is known as the stress gland of the body. Prenatal sex determination is banned in India. Vegetative…2026
CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.