CBSE 10th Standard Science Subject Life Processes HOT Questions 2 Mark Questions 2021
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CBSE 10th Standard Science Subject Life Processes HOT Questions 2 Mark Questions 2021
10th Standard CBSE
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Reg.No. :
Science
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How the process of digestion will be affected if the bile ducts get blocked?
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(a)What prevents the entry of food into trachea while swallowing?
(b)Why rate of breathing is faster in aquatic animals as compared to terrestrial animals? -
What do the following transport?
(a)Xylem
(b)Phloem
(c)Pulmonary vein
(d)Pulmonary artery -
a - What is this structure called and give its state-open or closed?
b - Where are they present?
c - What controls the opening and closing of it?
d - Draw the opposite figure to this. -
Three organisms ate food in the form of glucose and the end products after respiration are:
a - ethanol + CO2
b - CO2+H2O
c - Lactic acid + water
Explain how is this possible?
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CBSE 10th Standard Science Subject Life Processes HOT Questions 2 Mark Questions 2021 Answer Keys
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The non-availability of bile in small intestine will affect digestion of fat as it cannot be emulsified and enzyme lipase will not act on fat effectively.
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(a)Epiglottis covers the opening of wind pipe during swallowing.
(b)Because the amount of dissolved O2 in water is less as compared to air in atmosphere. -
(a)Xylem- Transports water and dissolved minerals in plants.
(b)Phloem-Transport prepared food in plants.
(c)Pulmonary vein-Transports oxygenated blood from lungs to left ventricles of heart.
(d)Pulmonary artery -Transports deoxygenated blood from body to right ventricles. -
(a) Open stomata
(b) In leaves
(c) Guard cells
(d) Closed stomata
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(a) because of anaerobic respiration; (fermentation)
(b) because of aerobic respiration
(c) because of anaerobic respiration in muscle cells.
