Transportation in Animals and Plants

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

Why is it necessary to excrete waste products?

Describe the function of the heart.

What makes the blood look red?

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

What are the components of blood?

Does transpiration serve any useful function in the plants? Explain.

What are stomata? Give two functions of stomata.

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

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

Choose the correct option:

(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

3. under the fan

3. covered with a polythene bag

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 ______.

Match structures given in Column I with functions given in Column II.