Nutrition in Plants - Worksheets

 CBSE Worksheet-01

Class – VII Science (Nutrition in Plants)

---

1. Plants prepare their food by the process of
   1. Respiration
   2. Photosynthesis
   3. Transpiration
   4. All of these.
2. The organism that can prepare their own food are called
   1. Heterotrophs
   2. Consumers
   3. Decomposers
   4. Autotrophs
3. Which of the following is not required by plant for food synthesis?
   1. Water
   2. Oxygen
   3. Carbon dioxide
   4. Chlorophyll
4. Which one is an insectivorous plant?
   1. Banyan tree
   2. Cuscuta
   3. Pitcher plant
   4. Neem plant
5. Match the following.

   Column A	Column B
   a. Autotrophs	i. Tiger
   b. Heterotrophs	ii. Mushroom
   c. Carnivores	iii. Cuscuta
   d. Saprophytes	iv. Green plants
   e. Parasite	v. Animals

6. Fill in the blanks
   1. Green plants are called ________, since they synthesize their own food.
   2. Oxygen is released by plants during ________.
   3. ________ live on dead and decaying animals.
   4. ________ is the green coloured pigments present in leaves.
   5. The food synthesized by the plants is stored as ________.
7. What is photosynthesis?
8. Distinguished between parasite and saprophytes.
9. What are insectivorous plants? Give two examples.
10. Observe the diagrams of organisms given below. Name them and write their category.

    A)

    B)

    C)

CBSE Worksheet-01
Class – VII Science (Nutrition in Plants)
Answer key

---

1. b
2. d
3. b
4. c
5. (a) – (iv), (b) – (v), (c) – (i), (d) – (ii), (e) – (iv).
6. (a) Autotrophs (b) photosynthesis (c) saprophytes (d) chlorophyll (e) starch
7. The process by which green plants synthesis their food using sunlight, carbondioxide, water and chlorophyll is called photosynthesis.

8. Saprophytes	Parasites
   Organisms which depend on dead and decaying organic material for their nourishment are known as saprophytes.	Organisms which depend on living organisms for their nutritional requirement are known as parasites.
   They do not harm other living organisms.	Parasites harm the host organism.
   Saprophytes do not feed on living organisms.	Parasites feed on living organisms.
   Examples: Mushrooms (fungi)	Example: Plasmodium, Cuscuta

9. Those plants that eat insects by trapping them are called insectivorous plants. They obtain protein from insects. For example- Pitcher plants and venus fly trap.
10. 1. Name- Mushroom.
       Category - Saprophytes.
    2. Name – Pitcher plant.
       Category – Insectivores.
    3. Name – Cuscuta.
       Category – Parasites.