Students can solve these Class 7 Science MCQ and Class 7 Science Chapter 10 Life Processes in Plants MCQ Questions Online Test with Answers to assess their preparation level.
Class 7 Life Processes in Plants MCQ with Answers
MCQ on Life Processes in Plants Class 7
Class 7 Science Chapter 10 Life Processes in Plants MCQ Questions with Answers
Question 1.
In the process of photosynthesis, plants
(a) take O2 and release CO2
(b) take CO2 and release O2
(c) take water vapour and release O2
(d) take O2 and release water
Answer:
(b) take CO2 and release O2
Question 2.
Which of the following statements is/are correct?
(i) All green plants can prepare their own food.
(ii) Most animals are autotrophs.
(iii) Carbon dioxide is not required for photosynthesis.
(iv) Oxygen is liberated during photosynthesis.
Choose the correct answer from the options given below.
(a) (i) and (iv)
(b) Only (ii)
(c) (ii) and (iii)
(d) (i) and (ii)
Answer:
(a) (i) and (iv)
Question 3.
Which of the following energy conversions occur during the process of photosynthesis?
(a) Solar energy is changed into chemical energy
(b) Solar energy is changed into mechanical energy
(c) Bio-energy is converted into chemical energy
(d) Chemical energy is changed into light energy
Answer:
(a) Solar energy is changed into chemical energy
Question 4.
Which of the following steps are correctly related to the process given in the image below?
A. Place the leaf in a test tube containing alcohol and heat directly on the flame.
B. After the leaf becomes colourless, rinse it in warm water to soften it.
C. Add iodine solution to the decolourised leaf to observe any change.
D. Boil the leaf in water first to stop all cellular processes.
Options:
(a) A, B, C only
(b) B, C, D only
(c) A and C only
(d) A, B, D only
Answer:
(b) B, C, D only
Question 5.
If iodine is dropped on the boiled decolourised leaf it gives blue-black colour due to the presence of
(a) starch
(b) protein
(c) fat
(d) vitamin
Answer:
(a) starch
Question 6.
What will happen if a leaf is kept in the dark for an extended period?
(a) Starch will be produced
(b) Oxygen will be produced
(c) No starch will be produced
(d) Photosynthesis will occur
Answer:
(c) No starch will be produced
Question 7.
A student observed tiny pores, while examining a leaf peel under a microscope. These pores are mainly responsible for
(a) transport of water
(b) storage of food
(c) exchange of gases
(d) absorption of minerals
Answer:
(c) exchange of gases
Question 8.
They are pipe-like consisting of a group of specialised cells. They transport substances and form a two-way traffic in plants. Which of the following terms qualifies for the features mentioned above?
(a) Xylem tissue
(b) Vascular tissue
(c) Root hairs
(d) Phloem tissue
Answer:
(d) Phloem tissue
Question 9.
A student places a plant in red-coloured water and notices red colour in the stem after some time.
What does this observation most accurately indicate?
(a) The red colour confirms the presence of chlorophyll in the stem
(b) Photosynthesis is taking place in the xylem
(c) Water and minerals are transported upward through xylem
(d) Phloem helps in the upward movement of red colour
Answer:
(c) Water and minerals are transported upward through xylem
Question 10.
In a flask containing lime water and seeds, the lime water turns milky because the seeds produce extra ‘X through which process ‘V?
(a) X- Oxygen and Y-Photosynthesis
(b) X- Carbon dioxide and Y-Respiration
(c) X- Oxygen and Y-Transpiration
(d) X- Carbon dioxide and Y-Germination
Answer:
(b) X- Carbon dioxide and Y-Respiration
Question 11.
In the presence of sunlight. which process is responsible
for the production of oxygen in plants?
(a) Respiration
(b) Photosynthesis
(C) TranspiratiOn
(d) GermInation
Answer:
(b) Photosynthesis
Question 12.
In a plant, which part primarily controls the exchange of gases?
(a) Roots
(b) Xylem
(c) Stomata
(d) Phloem
Answer:
(c) Stomata
Question 13.
What Is the product of photosynthesis?
(a) Starch
(b) Fats
(c) Protein
(d) Vitamins
Answer:
(a) Starch
Question 14.
Phloem tissue is responsible for the transportation of
(a) water
(b) minerals
(c) food
(d) All of the above
Answer:
(c) food
Question 15.
What is the correct word equation for respiration in plants?
(a) Glucose + Oxygen – Carbon dioxide + Water + Energy
(b) Glucose + Oxygen – Oxygen + Water + Carbon dioxide
(c) Carbon dioxide + Water – Glucose + Oxygen + energy
(d) Glucose + Water – Oxygen + Carbon dioxide + Energy
Answer:
(a) Glucose + Oxygen – Carbon dioxide + Water + Energy
Life Processes in Plants Class 7 Assertion-Reason Type Questions
I. The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Question 1.
Assertion (A) Leaves are called the “food factories” of plants.
Reason (R) Chlorophyll in leaves captures sunlight energy needed for photosynthesis.
Answer:
(a) Both A and R are true and R is the correct explanation of A
Question 2.
Assertion (A) The presence of starch in leaves is an indicator of photosynthesis.
Reason (R) Starch is a product of glucose formed during photosynthesis and is stored in the leaves.
Answer:
(a) Both A and R are true and R is the correct explanation of A
Question 3.
Assertion (A) Xylem transports food and minerals in the plant.
Reason (R) Xylem and phloem transport different substances in plants.
Answer:
(d) A is false, but R is true
II. The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by
selecting the appropriate option given below.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A Is false, but R Is true
Question 14.
Assertion (A) The green pigment present in the leaves is called stomata.
Reason (R) It plays an important role in the process of photosynthesis in plants.
Answer:
(d) A Is false, but R Is true
Question 15.
Assertion (A) Plants carry out respiration to release energy.
Reason (R) Both green or non-green parts of plant carry out respiration.
Answer:
(b) Both A and R are true, but R is not the correct explanation of A
Question 16.
Assertion Photosynthesis is essential for the suruival of all living organisms.
Reason It is the only process by which oxygen is removed from the atmosphere.
Answer:
(c) A is true, but R is false
Life Processes in Plants Class 7 Fill in the blanks
Question 1.
Leaves appear green because they contain a pigment called ______
Answer:
Chlorophyll
Question 2.
Rustom Hormusji Dastur examined the importance of water, temperature and ______ in the process of photosynthesis.
Answer:
Colour of light
Question 3.
Plants release ______ gas as a by-product of photosynthesis.
Answer:
Oxygen
Question 4.
Water moves upwards in the stem through a thin tube-like structure called ______
Answer:
Xylem
Question 5.
During respiration, glucose is broken down in the presence of oxygen, releasing ______
Answer:
Carbon dioxide
Question 6.
______ (gas) is released during photosynthesis.
Question 7.
Water and minerals are transported by ______
Question 8.
The process of photosynthesis takes place in the presence of ______
Question 9.
During respiration ______ is release to produce energy.
Life Processes in Plants Class 7 True or False
Question 1.
Plants store food in the form of starch, a type of protein.
Answer:
False, starch is a type of carbohydrate, not protein.
Question 2.
Caustic soda is a strong chemical that can cause skin burns.
Answer:
True
Question 3.
Stomata, present on the stem, help in the exchange of gases.
Answer:
False, stomata are found on the surface of leaves, not just on the stems.
Question 4.
Xylem is present in the stem, branches and leaves of plants.
Answer:
True
Question 5.
Carbon dioxide turns lime water milky.
Answer:
True
Question 6.
Autotrophs can synthesise their own food.
Answer:
True
Question 7.
Plants release oxygen during respiration.
Answer:
False
Question 8.
Phloen is responsible for gaseous exchange in plants.
Answer:
False
Life Processes in Plants Class 7 Case Based Questions
Question 1.
The picture shows the directions of movement of two different substances in plants.
(i) What do the two types of arrows in the picture show?
| (a) Movement of air | Movement of water |
| (b) Movement of food | Movement of air |
| (c) Movement of water | Movement of food |
| (d) Movement of air | Movement of minerals |
Answer:
(c) Movement of water, movement of food.
(ii) Name the tissues responsible for the movement shown in fig.
(a) Xylem and phloem
(b) Stomata and guard cell
(c) Leaf surface and roots
(d) Epidermis and cuticle
Answer:
(a) Xylem and phloem
Life Processes in Plants Class 7 Match the following
Question 1.
Match the Column I with Column II.
| Column I | Column II |
| A. Xylem | 1. Transport glucose |
| B. Guard cells | 2. Site of photosynthesis |
| C. Caustic soda | 3. Transport minerals |
| D. Phloem | 4. Sodium hydroxide |
| E. Leaf | 5. Stomata |
Answer:
| Column I | Column II |
| A. Xylem | 3. Transport minerals |
| B. Guard cells | 5. Stomata |
| C. Caustic soda | 4. Sodium hydroxide |
| D. Phloem | 1. Transport glucose |
| E. Leaf | 2. Site of photosynthesis |
Question 2.
Match the Column I with Column II.
| Column I | Column II |
| A. Leaf | 1. Raw material |
| B. Tiny pores present | 2. Food factory of plants on leaf |
| C. CO2 and water | 3. Stomata |
Answer:
| Column I | Column II |
| A. Leaf | 2. Food factory of plants on leaf |
| B. Tiny pores present | 3. Stomata |
| C. CO2 and water | 1. Raw material |