control and coordination class 10 MCQ – Quiz

It is very important for students to practice their biology chapter regularly to achieve good marks in their CBSE board examinations. control and coordination class 10 MCQ will help them to do so. These MCQs are based on the latest pattern of the CBSE board exam 2022-2023.

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#1. Which of the following endocrine glands does not exist in pairs?

Testes

Adrenal

Ovary

Pituitary

#2. The secretion of which hormone leads to physical changes in the body when you are 10-12 years of age?

Testosterone from thyroid gland and estrogen from pituitary gland.

Estrogen from adrenal gland and testosterone from pituitary gland.

Testosterone from testes and estrogen from ovary.

Oestrogen from testes and testosterone from ovary.

#3. Identify which of the following statements about thyroxin is incorrect?

Thyroid gland requires iodine to synthesize thyroxin.

Iron is essential for the synthesis of thyroxin.

Thyroxin is also called thyroid hormone.

It regulates protein, carbohydrates and fat metabolism in the body.

#4. Which part of nervous system controls the re¬flex activities of the body?

Cerebellum

Spinal cord

Brain

Cerebrum

#5. Breathing is controlled by which part of the brain?

Medulla oblongata

Hypothalamus

Cerebellum

Cerebrum

#6. A diabetic patient suffers from deficiency of which hormone?

Thyroxine

Testosterone

Oestrogen

Insulin

#7. Which gland secretes the growth hormone?

Pituitary gland

Thyroid

Hypothalamus

Adrenal

#8. Which of the following acts as both endocrine and exocrine gland?

Pancreas

Thyroid

Adrenal

Liver

#9. Posture and balance of the body is controlled by

Pons

Medulla oblongata

Cerebrum

Cerebellum

#10. The highest coordinating centre in the human body is

spinal cord

heart

brain

kidney

#11. Main function of cerebrum is

thinking

memory

hearing

balancing

#12. A microscopic gap between a pair of adjacent neurons over which nerve impulses pass is called

axon

dendrites

synapse

neurotransmitter

#13. Which nerves transmit impulses from the central nervous system towards muscle cells?

Cranial nerves

Motor nerves

Sensory nerves

Relay nerves

#14. The longest fibre on the cell body of a neuron is called

axon

dendrites

cytoplasm

sheath

#15. A part of the body which responds to the in-structions sent from nervous system is called

receptor

effector

nerves

muscles

#16. Any change in the environment to which an organism responds is called

stimulus

response

coordination

hormone

#17. Fall of mature leaves and fruits from plants is triggered by which of the following substance?

Auxin

Cytokinin

Abscisic acid

Gibberellin

#18. Which plant hormone promotes dormancy in seeds and buds?

Auxin

Gibberellin

Cytokinin

Abscisic acid

#19. Roots of plants are:

positively geotropic

positively phototropic

negatively geotropic

None of these

#20. Movement of sunflower in accordance with the path of Sun is due to

Phototropism

Hydrotropism

Phototropism

Chemotropism

#21. Response of plant roots towards water is called:

Geotropism

Hydrotropism

Phototropism

Chemotropism

#22. Which plant hormone promotes cell division?

Abscisic acid

Gibberellin

Cytokinin

Auxin

#23. The main function of abscisic acid in plants is

to increase the length of cells.

to inhibit growth.

to promote growth of stem.

to promote cell division.

#24. What is the function of pituitary gland?

to stimulate growth in all organs

to regulate sugar and salt level in the body

to initiate metabolism in the body

to develop sex organs in males

#25. A female is suffering from an irregular menstrual cycle. The doctor prescribed her some hormonal tablets. Which option shows the hormone she lacks in her body from the endocrine gland?

adrenalin

oestrogen

thyroxin

testosterone

#26. Which option correctly shows the order of events when a bright light is focused on our eyes?

Bright light → receptors in eyes → sensory neuron → motor neurons → spinal cord → eyelid closes

Bright light → receptors in eyes → spinal corde - motor neurons → sensory neuron → eyelid closes

Bright light → receptors in eyes → spinal cord → sensory neuron → motor neurons → eyelid closes

Bright light → receptors in eyes → sensory neuronspinal cord → motor neurons → eyelid closes

#27. When we touch the leaves of “touch-me-not” plant, they begin to fold up and droop. How does the plant communicate the information of touch?

The plant uses electrical signals to transfer information from the external environment to cells.

The plant uses electrical- chemical signals to transfer information from tissue to specialized cells.

The plant uses electrical- chemical signals to transfer information from cell to cell.

The plant uses electrical signals to transfer information from cell to specialized tissues.

#28. How will information travel within a neuron?

Axon -> cell body -> dendrite -> nerve ending

Axon -> dendrite -> cell body -> nerve ending

Dendrite -> axon -> cell body -> nerve ending

Dendrite -> cell body -> axon -> nerve ending

#29. Which parts of the brain controls the blood pressure?

spinal cord, skull, hypothalamus

cord, skull, cerebrum

Pons, medulla, cerebellum

pons, medulla, pituitary

#30. Organisms depend on hormones as well as electric impulses for the transmission of signals from the brain to the rest of the body. What can be a likely advantage of hormones over electric impulses?

It is secreted by all types of cells present in the body.

It is secreted by stimulated cells and reaches all cells of the body.

It is relayed to the target organ at a faster rate than electric impulses.

It does not depend on an external stimulus to be generated in the cells.

#31. After our nose senses a smell, which option shows the mechanism of the travelling of sense in our body?

olfactory receptors → dendritic tip of a nerve cell → axon → nerve ending → release of signal dendritic tip of other nerve cell

olfactory receptors → dendritic tip of a nerve cell → axon → cell body → release of signal → dendritic tip of other nerve cell

gustatory receptors → dendritic tip of a nerve cell → cell body → axon → release of signal dendritic tip of other nerve cell

gustatory receptors → dendritic tip of a nerve cell → axon → cell body → release of signal dendritic tip of other nerve cell

#32. In a synapse chemical signal is transmitted from ______.

axon to cell body of same neuron

from dendrite of one neuron to axonal end of other neuron

cell body to axonal end of same neuron

axonal end of one neuron to dendrite of another neuron

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