Page 116 - Science Class 07

4. What is kidney?
5. What is the func on of ureter?

6. What is dialysis?
7. Name the organ that helps earthworms in excre on of body wastes.
8. Write the func on of gills.

E. Short answer ques ons.
1. What is excre on? How solid wastes are excreted out of human body?
2. How ammonia, urea and uric acid are excreted out of human body?
3. Write the func on of the organs involved in excretory system.

4. Write the process of dialysis.
5. Write the process of excre on in fishes.
F. Long answer ques ons.

1. Explain eges on in human body.
2. How the process of excre on begin in human body?
3. Explain the malfunc on of the excretory system.
4. Describe the excre ons in amoeba and cockroach.

Project
Project ActivityActivityActivity
Project
Project Activity
A. Visit a pathological laboratory and try to know about different types of urine tests. Also, know
more about the symptoms of diabetes. Prepare a report on your findings.
B. Collect more informa on on kidney transplanta on and prepare a report.

C. Label the diagram given below.

HOTSTSTS
HO
HO
HOTS
A. Urine is more concentrated and yellowish in summers. Why?
B. Although uric acid is insoluble in water, how is it possible for human body to excrete it through
urine.

116 Science-7