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ATS COACHING CLASSES SCIENCE (X) LIFE PROCESSES |
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MULTIPLE CHOICE QUESTIONS (MCQs)
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1 |
One of the events that does not occur during photosynthesis is (a) Chlorophyll absorbs solar
energy (b) Carbon dioxide is released during the process (c) Oxygen is released during the process (d) Carbon dioxide is absorbed during the process |
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2 |
Water in the root enters due to (a) the function of the root to absorb water (b)difference in the concentration of ions between the root and the
soil (c)excess water present in the soil (d)diffusion of water in the roots |
1 |
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3 |
The length of small intestine in a deer is more as compare to the
length of small intestine of a tiger the reason for this is (a) mode of intake of food (b)types of food consumed (c) presence or absence of villi in intestine (d)presence or absence of digestive enzymes |
1 |
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4 |
Most of the digestion and absorption of the food take places in the (a) small intestine (b)liver (c)stomach (d) large intestine |
1 |
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5 |
State one role of each of the following in human digestive system (a) hydrochloric acid (b)villi (c) anal sphincter (d) lipase |
1 |
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6 |
Which one of the following molecules is produced initially when
glucose breaks down in the cytoplasm of a cell aerobic as well as anaerobic respiration? (a) Lactic acid (b) Ethanol (c) carbon dioxide (d) Pyruvate |
1 |
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7 |
The process in which transports of solution products of
photosynthesis take place in plants in known as (a) transpiration (b) evaporation (c) conduction (d) translocation |
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ASSERTION AND REASON QUESTIONS (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the
correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true and Reason (R) is not
the correct explanation of the Assertion (A). (c) Assertion (A) is true, and Reason (R) is false. (d) Assertion (A) is false, and Reason (R) True. |
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ASSERTION: Amphibians can
tolerate mixing of oxygenated and deoxygenated blood. REASON: Amphibians are animals
with two chambered heart. |
1 |
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ASSERTION: Resins and gums
are stored in old xylem tissue in plants. REASON: Resins and gums
facilitate transport of water molecules. |
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10 |
ASSERTION: The walls of
atria are thicker than those of the ventricles. REASON: Ventricles have to
pump blood into various organs at high pressure. |
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11 |
ASSERTION: The rate of
breathing in aquatic organisms is much slower then that seen in terrestrial
organisms. REASON: The amount of
oxygen dissolved in water is very low as compared to the amount of oxygen in
air. |
1 |
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VERY SHORT ANSWER QUESTIONS |
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12 |
Two green plants are kept separately oxygen free containers one in
the dark and other sunlight. It was observed that plants kept in dark could
not survive longer. Give reason for this observation. |
2 |
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13 |
Give two reasons, why bile juice is considered to be an important
secretion of liver in the process of digestion |
2 |
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14 |
Sometime while running the athletes suffer from muscle cramps. Why?
How is the respiration in this case
different from aerobic respiration. |
2 |
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15 |
Write the other name given to lymph. State its two function. |
2 |
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16 |
Diffusion is insufficient to meet the oxygen requirement of
multicellular organisms like human state reason. |
2 |
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17 |
We need to water the soil in plants on a regular basis. But it
ultimately reaches the leaves of the plants. Explain how this takes place. |
2 |
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18 |
Explain in brief two ways by which leaves of a plant help in
excretion. |
2 |
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SHORT ANSWER TYPE QUESTIONS |
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19 |
Explain with help of neat and well labelled diagrams the different
steps involved in nutrition in Amoeba. |
3 |
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20 |
Explain the process of transport of oxygenated and deoxygenated blood
in a human body. |
3 |
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21 |
Write three points of difference between breathing and respiration. |
3 |
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22 |
Draw a flow chart to show the breakdown of glucose by various
pathways. |
3 |
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23 |
(i) What is double circulation? (ii) Why is the separation of the right side and the left side of the
heart useful? How does it help birds and mammals? |
3 |
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24 |
(a) List in tubular form two differentiating features between xylem
and phloem. (b) Write two advantages of transpiration in plants. |
3 |
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25 |
Draw a diagram of human excretory system and label it. |
3 |
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LONG ANSWER TYPE QUESTIONS |
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26 |
(a) Why is nutrition necessary for the human body? (b) What cause movement of food inside the alimentary canal? (c) Why is small intestine in herbivores longer than in carnivore? (d) What will happen if mucus is not secreted by the gastric glands? |
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27 |
Design an experiment to demonstrate that carbon dioxide is essential
for photosynthesis. Write the observation and conclusion of the experiment. |
5 |
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28 |
Give reasons: (a) Ventricles have thicker muscular walls that atria. (b) Transport system in plants is slow. (c) Circulation of blood in aquatic vertebrates differs from that in
terrestrial vertebrates. (d) During the day time, water and minerals travel faster through
xylem as compared to the night. (e) Veins have valves whereas arteries do not. |
5 |
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29 |
(a) Mention any two components of blood. (b) Trace the movement of oxygenated blood in the body. (c) Write the function of valves present in atria and ventricles. (d) Write one structural difference between the composition of artery
and veins. |
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30 |
(a) Describe the structure and function of the basic filtering unit
of kidney. (b) List two factors on which reabsorption of water from urine
depends. |
5 |
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CASE BASED STUDY QUESTIONS |
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31 |
Read the following passage and answer the
questions: Neha
observed that patients with kidney failure are often put on dialysis. Her
teacher explained how dialysis helps such patients. 1. What is
the main excretory organ in humans? 2. What is
dialysis and why is it needed? 3. Name
the functional unit of the kidney. 4. What
waste product is mainly removed during dialysis? 5.
Describe how the kidneys help maintain water balance in the body. |
4 |
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32 |
Read the following passage and answer the
questions: A patient
was diagnosed with a blockage in one of the coronary arteries. The doctor
explained that this affects the circulation of blood in the heart muscle. 1. What is
the function of coronary arteries? 2. How can
blockage in coronary arteries affect the heart? 3. Name
the components of blood responsible for oxygen transport. 4. What is
the role of platelets in blood? 5. Which
part of the human heart receives deoxygenated blood from the body? |
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33 |
Read the following passage and answer the
questions: Rahul
noticed that after vigorous exercise, he was breathing heavily and felt pain
in his leg muscles. His biology teacher explained that this was due to
anaerobic respiration. 1. What is
anaerobic respiration? 2. Why did
Rahul experience muscle pain after exercise? 3. Write
the chemical equation for anaerobic respiration in muscles. 4. How is
energy released in anaerobic vs. aerobic respiration? 5. In
which cell organelle does aerobic respiration mainly take place? |
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34 |
Read the following passage and answer the
questions: Rani
conducted an experiment by placing two potted plants in identical conditions,
except that she covered one of the plants with a black plastic bag, while the
other was left uncovered. After a few days, she tested a leaf from each plant
for starch. 1. What
process is Rani trying to study with this experiment? 2. What
result will she observe in the starch test, and why? 3. Name
the raw materials required for the process being studied. 4. Which
part of the plant cell contains the pigment essential for this process? 5. Explain
why the plant covered with the black plastic bag shows no starch. |
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