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Transportation In Animals And Plants

Question
CBSEENSC7001181
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Why is it necessary to excrete waste products?

Solution

All cells of our body produce waste products. These waste products are toxic to the body and therefore need to be excreted out. This process of removing waste products produced in the cells of living organisms is called excretion.

Some More Questions From Transportation in Animals and Plants Chapter

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 ______.

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

   (iii) under the fan

   (iv) covered with a polythene bag

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

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

What are stomata? Give two functions of stomata.

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

What are the components of blood?

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

What makes the blood look red?

Describe the function of the heart.

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