CBSE Board Exam is on the way, so you must practice some good Case Study Questions Class 10 Science to boost your preparation to score 95+% on Boards. In this post, you will get Case Study and Passage Based Questions that will come in CBSE Class 10 Science Board Exams.
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In CBSE Class 10 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
Life Processes Case Study Questions With Answers
Here, we have provided case-based/passage-based questions for Class 10 Science Chapter 6 Life Processes
Case Study/Passage-Based Questions
Question 1:
Transpiration is the evaporative loss of water by plants. It occurs mainly through the stoma in the leaves. Besides the loss of water vapor in transpiration, the exchange of oxygen and carbon dioxide in the leaf also occurs through pores called stomata. Normally stomata remain open in the daytime and close during the night
(i) Which of the following will not directly affect transpiration?
| (a) Temperature | (b) Light |
| (c) Wind speed | (d) Chlorophyll content of leaves |
Answer: (d) Chlorophyll content of leaves
(ii) Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements . using one of following options.
(a) The above processes happen only during night time.
(b) One process occurs during day time and the other at night.
(c) Both processes cannot happen Simultaneously.
(d) Both processes can happen together at day time.
Answer: (d) Both processes can happen together at day time.
(iii) Which of the following statements is not true for stomatal apparatus?
(a) Guard cells invariably possess chloroplasts and mitochondria.
(b) Guard cells are always surrounded by subsidiary cells.
(c) Stomata are involved in gaseous exchange.
(d) Inner wall of guard cells are thick.
Answer: (b) Guard cells are always surrounded by subsidiary cells.
(iv) Which of the following is not a purpose of transpiration?
(a) Helps in absorption and transport in plants
(b) Prevents loss of water
(c) Maintains shape and structure of plants by keeping the cells turgid
(d) Supplies water for photosynthesis
Answer: (b) Prevents loss of water
(v) Refer to the given graphs regarding factors affecting transpiration rate and select the correct option.
(a) P-Atmospheric temperature; Q-Atmospheric pressure
(b) P-Relative humidity; Q-Atmospheric temperature
(c) P-Air movement; Q-Light
(d) P-Atmospheric pressure; Q-Relative humidity
Answer: (a) P-Atmospheric temperature; Q-Atmospheric pressure
Question 2:
Heterotrophic nutrition is a mode of nutrition in which organisms obtain readymade organic food from outside sources. The organisms that depend upon outside sources for obtaining organic nutrients are called heterotrophs.
Heterotrophic nutrition is of three types: saprophytic, parasitic, and holozoic nutrition.
(i) In which of the following groups of organisms food material is broken outside the body and absorbed?
(a) Mushroom, green plants, Amoeba
(b) Yeast, mushroom, bread mould
(c) Paramecium, Amoeba, Cuscuta
(d) Cuscuta, lice, tapeworm
Answer: (b) Yeast, mushroom, bread mould
(ii) Which of the following is a parasite?
(a) Yeast
(b) Taenia
(c) Amoeba
(d) Earthworm
Answer: (b) Taenia
(iii) Which of the following is an example of saprotroph?
(a) Grass
(b) Mushroom
(c) Amoeba
(d) Paramecium
Answer: (b) Mushroom
(iv) Heterotrophic nutrition involves
(a) production of simple sugar from inorganic compounds
(b) utilisation of chemical energy to prepare food
(c) utilisation of energy obtained by plants
(d) all of these.
Answer: (c) utilisation of energy obtained by plants
(v) In Paramecium, food enters the body through
(a) mouth
(b) pseudopodia
(c) cilia
(d) cytostom
Answer: (d) cytostom
Case Study 3: Life processes are the essential functions that living organisms perform to maintain their existence. These processes include nutrition, respiration, transportation, excretion, and reproduction. Nutrition involves the intake of food and its utilization by the body for energy and growth. It can be classified into two types: autotrophic and heterotrophic. Autotrophic nutrition is the process by which organisms, such as plants, produce their own food using sunlight, water, and carbon dioxide through photosynthesis. Heterotrophic nutrition is the process by which organisms obtain nutrients by consuming other organisms. Respiration is the process of releasing energy from food through the oxidation of glucose molecules. Transportation involves the movement of materials, such as nutrients, water, and gases, within the body. Excretion is the removal of waste products generated by metabolic activities. Reproduction is the process by which organisms produce offspring of their own kind. Understanding life processes is crucial for studying the functioning and survival of living organisms.
What are the essential functions that living organisms perform to maintain their existence called?
a) Life processes
b) Metabolic activities
c) Cellular respiration
d) Photosynthesis
Answer: a) Life processes
What is autotrophic nutrition?
a) The process of consuming other organisms for nutrients
b) The process of producing food using sunlight, water, and carbon dioxide through photosynthesis
c) The process of releasing energy from food through oxidation
d) The process of removing waste products from the body
Answer: b) The process of producing food using sunlight, water, and carbon dioxide through photosynthesis
What is the process of releasing energy from food through the oxidation of glucose molecules called?
a) Respiration
b) Photosynthesis
c) Transportation
d) Reproduction
Answer: a) Respiration
What does transportation involve?
a) The intake of food and its utilization by the body
b) The movement of materials within the body
c) The removal of waste products generated by metabolic activities
d) The process of producing offspring
Answer: b) The movement of materials within the body
What is reproduction?
a) The intake of food and its utilization by the body
b) The movement of materials within the body
c) The removal of waste products generated by metabolic activities
d) The process of producing offspring of their own kind
Answer: d) The process of producing offspring of their own kind
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