Class 7 Science

Chapter 1 – Nutrition in Plants

Assignment 2

 

Q.1. (a) How do we destarch a potted plant?

(b) Differentiate between partial parasitic plants and total parasitic plants. Give one example of each.

Q.2. What is common between the following pairs?

(i) Bread mould and mushroom

(ii) Venus flytrap and pitcher plant

(iii) Mistletoe and Cuscuta

(iv) Lichens and association of Rhizobium and leguminous plants.

Q.3. How are the leaves of pitcher plant modified to catch insects?

Q.4. In the absence of photosynthesis, life is not possible on earth. Justify this statement.

Q.5. Briefly describe the procedure to test the presence of starch in a leaf using iodine solution.

Q.6. Define:

(i) Autotrophic nutrition

(ii) Photosynthesis

Q.7. Enlist the factors which affect the rate of photosynthesis.

Q.8. Define saprotrophic mode of nutrition with suitable examples.

Q.9. Identify the given organism and write down about its mode of nutrition.

Q.10. How are animals directly or indirectly dependent on plants?

Q.11. How do the plants obtain raw materials required for photosynthesis?

Q.12. How are water and minerals transported to the food factories of plants?

Q.13. Briefly describe symbiotic relationship of lichens.

Q.14. What happens if the leaves of a green plant are coated with oil?

Q.15. Write down the differences between saprotrophic and parasitic modes of nutrition.

 

Online Tuitions & Self-Study Courses for Grade 6 to 12 & JEE / NEET