science - transportation in animals and plants

Class 7 - Science

Transportation in Animals and Plants

Q&A
Question:

Does transpiration serve any useful function in plants? Explain.

Answer:

(i) It helps to enhance the absorption of water and dissolved minerals by creation of a suction pull.
(ii) It helps in getting rid of the excess water.
(iii) It helps in transport of water and minerals to leaves and leaves use the water for photosynthesis. ‘
(iv)It produces a cooling effect on the plant



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Questions and Answers


Transportation in Animals and Plants - Questions
1.

Choose the correct options:
(a) In plants, water is transported through
(i) Xylem (ii) Phloem (iii) Stomata (iv) Root hair
(b) Water absorption through roots can be increased by keeping the plants
(i) In the shade (ii) in dim light (iii) under the fan (iv) covered with a polythene bag


Answer
2.

Does transpiration serve any useful function in plants? Explain.


Answer
3.

Describe the function of the heart.


Answer
4.

Why is it necessary to excrete waste products?


Answer
5.

What are the components of blood?


Answer
6.

What will happen if there are no platelets in the blood?


Answer
7.

What makes the blood look red?


Answer
8.

Draw a diagram of the human excretory system and label the various parts.


Answer
9.

Why is transport of materials necessary in a plant or an animal? Explain.


Answer
10.

What are stomata? Give two junctions of stomata.


Answer
11.

Fill in the blanks :
(i) The blood from the heart is transported to all parts of the body by the _____________
(ii) Haemoglobin is present in ___________ cells.
(iii) Arteries and veins are joined by a network of ___________ .
(iv) The rhythmic expansion and contraction of the heart is called ___________
(v) The main excretory product in human beings is ___________
(vi) Sweat contains water and .
(vii) Kidneys eliminate the waste materials in the liquid form called .
(viii) Water reaches great heights in the trees because of suction pull caused by .


Answer
12.

Why is blood needed by all the parts of a body?


Answer
13.

Match structures given in Column I with functions given in Column II.
ncert-solutions-class-7-science-chapter-11-transportation-in-animals-and-plants-01


Answer
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