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CBSE Biology Nervous Coordination and Sense Organs Test 1 Online

Test Name	Nervous Coordination and Sense Organs Test
Subject	CBSE Biology
Test Type	MCQs
Total Question	24
Total Marks	48
Total Time	20 Minutes
Test Help For	CBSE Biology. CBSE Board Exams. Entrance Exams. Admissions Test. Jobs Test. General Knowledge. All Grades Exams.

Nervous Coordination and Sense Organs concept study for CBSE Biology examinations. The nerve cell or neuron consists of a cell body with one or more elongated projections extending from it. The cell body contains the nucleus. The projections are part of the cytoplasm and are called axons if they are long and singular, or dendrites if they are short and branched. Nerve endings or receptors at one end carry the sensors that respond to the stimuli, while on the opposite side, the stimulus is transferred ultimately to the brain. The sensory organs receive the various stimuli from the bird’s environment.

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CBSE Biology Nervous Coordination and Sense Organs Test 1 Online

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1. During the transmission of nerve impulse through a nerve fiber the potential on the inner side of the plasma membrane has which type of electric charge?

First positive then negative and continue to be negative

First negative then positive and again back to negative

First negative then positive and continue to be positive

First positive then negative and again back to positive

Question 1 of 24

2. Which one of the following not act as a neurotransmitter?

Epinephrine

Cortisone

Norepinephrine

Acetylcholine

Question 2 of 24

3. Characteristic feature of human cornea is that?

it is secreted by conjunctiva and glandular tissue

blood circulation is absent in cornea

in old age it become hard and white layer deposits on it which causes the cataract

it is lacrimal gland which secretes tears

Question 3 of 24

4. The junction between the axon of one neuron and the dendrite of the next is called?

constant bridge

junction point

a synapse

a joint

Question 4 of 24

5. During the propagation of a nerve impulse the action potential results from the movement of?

K + ions from extracellular fluid to intracellular fluid

K + ions from intracellular fluid to extracellular fluid

Na + ions from intracellular fluid to extracellular fluid

Na + ions from extracellular fluid to intracellular fluid

Question 5 of 24

6. In the resting state of the neural membrane diffusion due to concentration gradiens if allowed would drive?

K + into the cell

K + and Na + out of the cell

Na + out of the cell

Na + into the cell

Question 6 of 24

7. Ommatidia serve the purpose of photo reception in?

human

sunflower

cockroach

frog

Question 7 of 24

8. In which animal nerve cell is present but brain is absent?

Earthworm

Cockroach

sponge

Hydra

Question 8 of 24

9. When we migrate from dark to light we fail to see for some time but after a time visibility becomes normal. It is an example of?

accommodation

mutation

photoperiodism

adaptation

Question 9 of 24

10. Which of the following statements is correct about node of Ranvier?

Myelin sheath is discontinuous

Axolemma is discontinuous

Both neurilemma and myelin sheath are discontinuous

covered by myelin sheath

Question 10 of 24

11. Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter?

GABA

acetyl choline

dopamine

nor epinephrine

Question 11 of 24

12. Which part of human brain is concerned with the regulation of body temperature?

Cerebrum

Hypothalamus

Cerebellum

Medulla oblongata

Question 12 of 24

13. Cornea transplant in human is almost never rejected. This is because?

its cell are least penetrable by bacteria

it is a non-living layer

it has no blood supply

it is composed of enucleated cells

Question 13 of 24

14. Injury to vagus nerve in human is not likely to affect?

gastrointestinal movements

pancreatic secretion

tongue movements

cardiac movements

Question 14 of 24

15. Bowman's glands are located in the?

proximal end of uriniferous tubules

female reproductive system of cockroach

anterior pituitary

olfactory epithelium of our nose

Question 15 of 24

16. Which one of the following statements is correct?

Neurons regulate endocrine activity but not vice versa

Neither hormones control neural activity nor the neurons control endocrine activity

Endocrine glands regulate neural activity but not vice versa

Endocrine glands regulate neural activity and nervous system regulates endocrine glands

Question 16 of 24

17. In a man abducens nerve is injured. Which one of the following functions will be affected?

Movement of the eye ball

Movement of the tongue

Movement of the neck

Swallowing

Question 17 of 24

18. One of the example of the action of the autonomous nervous system is?

peristalsis of the intestine

swallowing of food

knee-jerk response

pupilary reflex

Question 18 of 24

19. What used to be described as Nissl's granules in a nerve cell are now identified as?

ribosomes

fat granules

mitochondria

cell metabolites

Question 19 of 24

20. An action potential in the nerve fiber is produced when positive and negative charges on the outside and the inside of the axon membrane are reversed because?

all potassium ions leave the axon

more potassium ions enter the axon as compared to sodium ions leaving it

more sodium ions enter the axon as compared to potassium ions leaving it

all sodium ions enter the axon

Question 20 of 24

21. Which one of the following pairs of structure distinguishes a nerve cell from other types of cell?

Vacuoles and fibers

Flagellum and medullary sheath

Nucleus and mitochondria

Perikaryon and dendrites

Question 21 of 24

22. A person suffering from the deficiency of the visual pigment rhodopsin is advised to take more?

guava and ripe banana

radish and potato

apple and grapes

carrot and ripe papaya

Question 22 of 24

23. Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells?

Osteocytes

Neurons

Maopighian layer of the skin

Liver cells

Question 23 of 24

24. What is the intensity of sound in normal conversation?

35-60 dB

10-20 dB

120-150 dB

70-90 dB

Question 24 of 24

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2021-01-17

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CBSE Biology Nervous Coordination and Sense Organs Test 1 Online

CBSE Biology Nervous Coordination and Sense Organs Test 1 Online

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