CBSE Class 7 Science Obtaining And Utilizing Food Worksheet

Q.1 MATCH THE FOLLOWING:

1. Chlorophyll                   Pitcher

2. Parasite                       Lichen

3. Symbiosis                    Dodder

4. Insectivorous               Starch

Q.2 DEFINE THE FOLLOWING:

1. Mastication

2. Ingestion

3. Assimilation

4. Saprotrophs

5. Respiration

Q.3 DRAW THE LABELLED DIAGRAMS OF THE FOLLOWING:

1. Teeth In One Jaw

2. Alimentary Canal

3. Villi

4. Insectivorous Plant(Pitcher Plant)

Q.4 FILL UP THE BLANKS:

1. Iodine shows blue black colour with …………………………. .

2. Mode of nutrition in fungi is ………………….. .

3. The ultimate source of energy on earth is…………………… .

4. ……………………… , sunlight, carbon dioxide and water are essential components for the process of photosynthesis.

5. In a ……………………….. relationship both organism benefit from each other.

Q.5 WRITE SHORT ANSWER FOR THE FOLLOWING QUESTIONS:

1. Write down the complete equation of photosynthesis.

2. What is common between the following pairs:

a) Bread mould and mushroom

b) Venus flytrap and pitcher plant.

3. What is the role of saliva?

4. What are steps involved in holozoic mode of nutrition.