Class 10 Science Control and Coordination

Class 10 Science Control and Coordination

 

Class 10 Science Control and Coordination Fill in the blanks , Multiple Choice Question [mcq] and True false .

Fill in the Blanks

1. The specialised tips of some nerve cells that detect information from the environment are called ________.
Answer: receptors

2. The electrical impulse in a neuron travels from the dendrite to the ________ and then along the axon.
Answer: cell body

3. The gap between two neurons where chemical signals are transmitted is called a ________.
Answer: synapse

4. Reflex arcs are formed in the ________ cord.
Answer: spinal

5. The ________ is the main thinking part of the brain.
Answer: fore-brain

6. The hormone ________ helps regulate blood sugar levels.
Answer: insulin

7. The movement of plant roots towards water is called ________.
Answer: hydrotropism

8. The ________ gland secretes adrenaline, which prepares the body for fight or flight.
Answer: adrenal

9. The ________ in the hind-brain maintains posture and balance.
Answer: cerebellum

10. The growth of pollen tubes towards ovules is an example of ________.
Answer: chemotropism

11. The hormone ________ promotes cell division in plants.
Answer: cytokinin

12. The ________ is a plant hormone that inhibits growth and causes wilting of leaves.
Answer: abscisic acid

13. The ________ system consists of the brain and spinal cord.
Answer: central nervous

14. The ________ is responsible for precision in voluntary actions like riding a bicycle.
Answer: cerebellum

15. The ________ hormone is essential for the synthesis of thyroxin.
Answer: iodine

 

Multiple Choice Questions (MCQs)

 

1. Which part of the neuron receives information?
(a) Axon
(b) Dendrite
(c) Synapse
(d) Cell body
Answer: (b) Dendrite

 

2. What is the function of adrenaline?
(a) Regulates blood sugar
(b) Prepares the body for fight or flight
(c) Promotes growth
(d) Controls sleep
Answer: (b) Prepares the body for fight or flight

 

3. Which plant hormone promotes growth?
(a) Abscisic acid
(b) Auxin
(c) Ethylene
(d) Cytokinin
Answer: (b) Auxin

 

4. The reflex arc involves:
(a) Brain only
(b) Spinal cord only
(c) Both brain and spinal cord
(d) Muscles only
Answer: (b) Spinal cord only

 

5. Which gland secretes thyroxin?
(a) Pituitary
(b) Thyroid
(c) Adrenal
(d) Pancreas
Answer: (b) Thyroid

 

6. The movement of shoots towards light is called:
(a) Geotropism
(b) Phototropism
(c) Hydrotropism
(d) Chemotropism
Answer: (b) Phototropism

 

7. Which part of the brain controls involuntary actions like breathing?
(a) Cerebrum
(b) Cerebellum
(c) Medulla
(d) Hypothalamus
Answer: (c) Medulla

 

8. What is the role of insulin?
(a) Regulates growth
(b) Controls blood sugar
(c) Prepares for emergencies
(d) Digests food
Answer: (b) Controls blood sugar