Page 184 - Science Class 07

B. Fill in the blanks.

1. Undigested food is stored in the ____________ of the human body.
2. When water and mineral salts enter the cells, they ____________ and become turgid.
3. Blood from the liver is carried by the ____________ that joins the interior venacava.

4. ____________ is the life process of producing one’s own kind.
5. Excessive exploita on of forests has resulted in ____________ of forests.

C. Write True or False.
1. Transpira on maintains turgidity that helps in growth of plants.
2. Plasma acts in blood clo ng and in defense of the body against diseases.

3. A luminous object may be ar ficial or man-made.
4. Forests regulate stream flow and moderate soil erosion.
5. The main factor behind the ex nc on of animals is deforesta on.

D. Name these devices and their func ons.

1. ______________ 2. ______________ 3. ______________ 4. ______________

E. Very short answer ques ons.
1. What is osmosis?
2. What is the func on of WBC?

3. What is electric circuit?
4. What is cyst?
5. What is heart beat?
F. Short answer ques ons.

1. Differen ate between xylem and phloem.
2. Define structure and func on of heart.
3. What is reflec on of light?

4. Describe the process of budding.
5. What is afforesta on?
G. Long answer ques ons.
1. Explain transporta on of food in plants.

2. What is the role of kidney and liver in the blood circula on?
3. What is pollina on? Write its process.
4. What will happen if most of the forests are cut down?

5. Write the uses of convex mirror?

184 Science-7