A.Objective Type Questions:
1. Organelle used as the site of
photosynthesis is
a. Mitochondria b. Cytoplasm
c. Chloroplast d. Golgi bodies
2. State the role of enzyme trypsin in the
process of digestion .
3. How is ATP built up during respiration?
4. Anaerobic respiration occurs in
a. Yeast b. Bacteria
c. Human muscle d. All of the above
5.The functional unit of the excretory system
is
a.Bowmans’ capsule b. Neuron
c. Nephron d. kidneys
6.The blood cells which are helpful in
stopping the blood at the site of injury?
a. RBC b. WBC
c. Platelets d. All of the above
7. Complete the sentence-
Lymph is similar to …….. of the blood but is
………… and contains less …….
8. What will happen to a plant if its xylem is
removed?
9. The blood vessel which brings oxygenated
blood from the lungs into the heart is
a. Pulmonary artery b.Vena cava
c . Pulmonary vein d. Aorta
10.Assertion (A): Stomata are tiny pores
present on the surface of the leaf.
Reason(R): Gaseous exchange take place in
plants through stomata .
a.Both (A) and (R)are true and (R)is the
correct explanation of assertion.
b. Both (A) and (R) are true but (R) is not the
correct explanation of assertion
c. (A) is true but (R) is false.
d. (A) is false but( R)is true
Answers
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Explanation:
1.chloroplasts
2.Trypsin
3.Cellular respiration
4.cytoplasm of a cell and The end products of aerobic respiration are carbon dioxide, water, and energy.
5.Nephron
6.Platelets
7.composition,plasma,WBCs
8.Xylem is a water-conducting tissue in plants. ... If the xylem of the plant is removed, upward movement of water will stop leading to wilting of leaves and ultimately causes the death of a plant.
9.pulmonary artery
10.true,In botany, a stoma (plural "stomata"), also called a stomate (plural "stomates") is a pore, found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange.
It is necessary for the gas to dissolve into the moisture film of the mesophyll cells before entering the cells. 6. When there is no photosynthesis, no gas exchange occurs through the stomata. ... Most of the plants have numerous stomata in the upper epidermis of their leaves to facilitate photosynthesis.
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