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- 1. Multiple Choice
How many pairs of salivary glands are found in
humans?
two
three
six
four
- 2. Multiple Choice
Blood vessel carry blood from lungs to heart through:
Pulmonary artery
Pulmonary vein
Coronory artery
None of these
- 3. Multiple Choice
From which structure, the free oxygen gas produced
during photosynthesis is released?
Epidermis
Stomata
Cortex
Guard cell
- 4. Multiple Choice
Villi present on the internal wall of intestine help in
the
emulsification of fats
breakdown of proteins
absorption of digested food
digestion of carbohydrates
- 5. Multiple Choice
During vigorous physical exercise, lactic acid is formed
from glucose inside the muscle cells because
there is lack of oxygen
there is lack of water
there is excess of carbon dioxide
none of the above
- 6. Multiple Choice
Which of the following is responsible for the transport
of water and minerals from roots to aerial parts of the
plant?
Xylem
Phloem
cortex
Both (a) and (b)
- 7. Multiple Choice
Which chambers of human heart contain oxygenated
blood?
Left atrium and left ventricle
Left atrium and right ventricle
Right atrium and left ventricle
Right atrium and right ventricle
- 8. Multiple Choice
The process of conversion of glucose into pyruvic acid
occurs in
mitochondria
Cytoplasm
outside the cell
chloroplast
- 9. Multiple Choice
The breakdown of pyruvate to give carbon-di-oxide,
water and energy takes place in:
cytoplasm
mitochondria
chloroplast
nucleus
- 10. Multiple Choice
Digestion of starch starts from:
Stomach
Intestine
Oesophagus
Mouth
- 11. Multiple Choice
The process of transpiration in plants helps in:
Opening of stomata
Absorption of CO2 from atmosphere
Upward conduction of water and minerals
Absorption of O2 from atmosphere
- 12. Multiple Choice
What is the mode of nutrition in fungi?
Autotrophic
Heterotrophic
Saprophytic
Parasitic
- 13. Multiple Choice
Which cell organelle is involved in breakdown of
glucose to produce energy for metabolic activities?
Mitochondria
Chloroplast
Endoplasmic reticulum
Golgi body
- 14. Multiple Choice
What is the final product of photosynthesis?
Protein
Fat
Starch
Mineral salt
- 15. Multiple Choice
Instrument used to measure blood pressure is
barometer
thermometer
anemometer
sphygmomanometer
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