CBSE Class 4  >  Class 4 Notes  >  Science  >  Worksheet: How Do Plants Make Their Food - 1

Worksheet: How Do Plants Make Their Food - 1

Q1: Give two examples of the following.

(i) Roots with stored food ______________ ______________

(ii) Flowers with stored food ______________ ______________

(iii) Insectivorous plants ______________ ______________

(iv) Stems with stored food ______________ ______________

(v) Parasitic plants ______________ ______________

(vi) Animals that depend on plants for shelter ______________ ______________
Q1: Give two examples of the following.

Q2: Multiple Choice Questions (MCQs).

(i) Which part of the plant supplies water collected from the stem to the leaf?
Q2: Multiple Choice Questions (MCQs).(a) Leaf blade
(b) Stomata
(c) Stalk
(d) Veins

(ii) Which of the following is responsible for green colour of the leaves?
(a) Midrib
(b) Leaf blade
(c) Stoma
(d) Chlorophyll

(iii) Which of the following stores the food in leaves?
(a) Cauliflower
(b) Legumes
(c) Spinach
(d) Broccoli

(iv) Which of the following is not required for photosynthesis?
(a) Water
(b) Sunlight
(c) Carbon dioxide
(d) Oxygen

(v) Venus flytrap has modified ________ to trap insects.Q2: Multiple Choice Questions (MCQs).(a) stem
(b) roots
(c) flowers
(d) leaves

Q3: Fill in the blanks.

(i) The ______________ is the flat part of a leaf.

(ii) The ______________ on the lower surface of leaves absorb carbon dioxide from air.

(iii) The extra food is stored in the form of ______________ in plants.

(iv) The leaves in cactus are reduced to ______________.

(v) The ______________ has modified leaves in the form of tubular pitcher-like structure with a lid.
Q3: Fill in the blanks.

Q4: Match the following.

Q5: True & False.Q5: True & False.

(i) The energy from the sun is absorbed by green leaves with the help of chlorophyll. ______________

(ii) Animals depend directly or indirectly on plants for food. ______________

(iii) Insectivorous plants grow in soil rich in nutrients. ______________

(iv) During photosynthesis, plants give out carbon dioxide through the stomata. ______________

(v) Croton plant appears red because it lacks chlorophyll. ______________

Q6: Answer the following questions in brief.

(i) Define photosynthesis.

(ii) List any two plant parts that store food. Give two examples each.

(iii) Why do plants make their own food?

(iv) What is midrib? What is its function?

(v) What are insectivorous plants? Give two examples.

Q7: Answer the following questions in detail.

(i) What are the three things for which animals depend on plants? What are the three things for which plants depend on animals?

(iii) What happens during photosynthesis?

Q8: Label the following parts of a leaf.
Q8: Label the following parts of a leaf.


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FAQs on Worksheet: How Do Plants Make Their Food - 1

1. How do plants make their own food using sunlight?
Ans. Plants make food through photosynthesis, a process where they use sunlight, water, and carbon dioxide to produce glucose and oxygen. Chlorophyll, the green pigment in leaves, captures light energy and converts it into chemical energy. This food fuels plant growth and survival, making plants self-sufficient producers unlike animals that depend on eating other organisms.
2. What's the difference between photosynthesis and respiration in plants?
Ans. Photosynthesis creates food using sunlight and releases oxygen, while respiration breaks down that food to release energy for plant activities. Photosynthesis occurs in chloroplasts during daylight; respiration happens continuously in all plant cells. Both processes are essential-photosynthesis stores energy, respiration releases it for growth, movement, and repair.
3. Why do plants need chlorophyll to make food?
Ans. Chlorophyll is the green pigment that absorbs light energy from the sun, enabling plants to convert it into usable chemical energy. Without chlorophyll, plants cannot capture sunlight's energy needed for the photosynthetic process. This pigment acts as the primary light-absorbing molecule, making it indispensable for food production in green plants and leaves.
4. What happens to the glucose that plants make during photosynthesis?
Ans. Glucose produced during photosynthesis serves multiple purposes: plants use it immediately for energy through respiration, store it as starch for later use, or convert it into cellulose for cell walls and structural growth. Some glucose is also used to build proteins and other organic compounds necessary for plant development and reproduction.
5. Can plants make food without sunlight, and why or why not?
Ans. Plants cannot make food without sunlight because light energy is essential for photosynthesis to occur. While plants can survive briefly in darkness using stored food reserves, they cannot produce new glucose without light. Even shade-loving plants require some light; complete darkness prevents the photosynthetic process that sustains all plant life and growth.
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