Class 10 Science Chapter 6 Question Answers - Control and Coordination

Select the Correct Alternative:

Q1. ______ is the complimentary system of nervous system.

1. Circulatory system
2. Endocrine system
3. Lymphatic system
4. Skeletal system

Q2. Plant hormones are called ______.

1. hypohormones
2. metahormones
3. phytohormones
4. cytohormones

Q3. The leaves of mimosa are sensitive to ______.

Mimosa Plant

1. light
2. touch
3. heat
4. smell

Q4. A sunflower plant bends towards the sun. It is ______ response.

1. Thigmonastic
2. seismonastic
3. thermonastic
4. photonastic

Q5. All multicellular organisms, except ______, have well-developed nervous system. 

1. porifera
2. mammals
3. arthropoda
4. insecta

Q6. Nerve mass in invertebrates is called ______.

1. brain
2. neuron
3. ganglion
4. pelvis

Q7. Hormones are secreted by ______.

1. endocrine glands
2. blood
3. midbrain
4. liver

Q8. The space between meninges is filled with ______.

1. lymph
2. blood plasma
3. cerebrospinal fluid
4. ACTH

Q9.______ is not the part of hind brain.

1. cerebellum
2. pons
3. medulla oblongata
4. cerebrum

Q10.______ protects spinal cord.

1. Cranium
2. Vertebral column
3. Skull
4. Ribs

Q11.______ pairs of spinal nerves arise from spinal cord.

1. 21
2. 31
3. 32
4. 42

Q12. Which of the following organs is not controlled by autonomous nervous system ?

1. Heart
2. Uterus
3. Glands
4. Eyes

Q13. The effects of sympathetic and parasympathetic nervous systems are ______.

1. complimentary
2. contradictory
3. complimentary and contradictory
4. none of above.

Q14. Endocrine glands ______.

1. secrete plasma
2. secrete nutrients
3. secrete hormones
4. secrete antibodies

Q15. Acetylcholine ______.

1. increases the speed of conduction of impulses
2. decreases the speed of conduction of impulses
3. quickens the effect of growth hormones
4. controls pituitary gland

Q16.______ is called the master gland.

1. Pineal
2. Pituitary
3. Thyroid
4. Thymus

Q17.______ hormone regulates ionic balance.

1. Vasopressin
2. Thyroxin
3. Glucagon
4. Testosterone

Q18.______ is the hormone responsible for development of female characteristics.

1. Adrenalin
2. Testosterone
3. Thyroxin
4. Progesterone

Q19.______ is responsible for lowering glucose level in blood.

1. Glucagon
2. Oxytocin
3. Insulin
4. Adrenalin

Q20.______ is responsible for increasing glucose level in blood.

1. Glucagon
2. Oxytocin
3. Insulin
4. Adrenalin

Q21.Prolactin regulates ______.

1. blood pressure
2. heartbeat
3. mammary glands
4. glucose metabolism

Q22. Nerve net is found in ______.

1. sponges
2. hydra
3. earthworm
4. cockroach

Q23.Which multicellular organism lacks the nervous system ?

1. Hydra
2. Locust
3. Sponges
4. Tapeworm

Q24. Which hormone functions as a growth promotor ?

1. Auxin
2. Ethylene
3. Abscisic acid
4. Both B and C

Q25.Which of the following shows thigmonastic response ?

1. Sun flower
2. Insectivorous plants
3. Lotus
4. Bryophyllum

Q26.Which two organs are connected by pons with the help of transverse band of nerves ?

1. Nerves of brain and spinal cord
2. Both the cerebral hemispheres
3. Cerebellum and central nervous system
4. Sympathetic and parasympathetic

Answers 

1. B 
2. C 
3. B 
4. D 
5. A 
6. C 
7. A 
8. C 
9. D 
10. B 
11. B
12. D 
13. C 
14. C 
15. A 
16. B 
17. A 
18. D 
19. C 
20. A 
21. C 
22. B 
23. C 
24. A 
25. B 
26. C