Transport of Substances in Plants & Animals Worksheet-3

Transport of Substances in Plants & Animals Worksheet-3

1. Select a mechanism which humans do not use for excreting their wastes from the body.

(a) Exhalation                               (b) Perspiration

(c) Daefecation                             (d) Transfusion

2. The clotting of blood is to

(a) Slow down the movement of blood inside the blood vessels

(b) Trap oxygen inside the blood so that it can be carried around more easily

(c) Seal up wounds and prevent loss of blood

(d) Trap harmful germs inside the blood and prevent them from harming the body.

3. Select the incorrect statement.

(a) Phloem tubes are only found in the leaves of plants as this is where the sugars are made

(b) Volume of blood in an average human adult is 10 litres

(c) Blood contains many more white blood cells than red blood cells

(d) All of these

4. A small muscular balloon like organ, which swells up when it is full of urine and shrinks in size again after urine has been emptied out, is known as

(a) Kidney                                      (b) Ureter

(c) Urinary bladder                     (d) Urethra

5. Match the column I with column II and select the correct option using the codes given below:

Column I                                                  Column II

A. Companion and sieve cells              1. Cockroach

B. Four chambered heart                     2. Earthworm

C. Haemolymph                                     3. Phloem

D. Nephridia                                           4. Mammals

(a) (A)–(3); (B)–(4); (C)–(1); (D)–(2)

(b) (A)–(1); (B)–(4); (C)–(3); (D)–(2)

(c) (A)–(3); (B)–(4); (C)–(2); (D)–(1)

(d) (A)–(1); (B)–(2); (C)–(4); (D)–(3)

6. Fill in the boxes in the given figure with the following phrases (that show movement of blood) and select the correct option.

(i) To lungs (ii) To rest of the body (iii) From the rest of the body (iv) From the lungs

(a) P–(i), Q–(iv), R–(iii), S–(ii)

(b) P–(ii), Q–(i), R–(iii), S–(iv)

(c) P–(iv), Q–(ii), R–(i), S–(iii)

(d) P–(iii), Q–(i), R–(ii), S–(iv)

7. Each structure is a bean-shaped dark red and consists of thousands of nephrons. These structures are situated in the abdominal cavity, one on each side of the vertebral column, just above the waist. Which structures are we referring to?

(a) Ovaries                                     (b) Adrenal glands

(c) Lymph nodes                          (d) Kidneys

8. Take a potted plant and water it. Cover a branch of the plant with a polythene bag and mark it X. Remove the leaves of another branch and cover that leafless branch with another polythene bag. Mark this branch as Y. Keep the potted plant in sunlight for few hours. In which polythene bag would you observe water droplets and why?

(a) Polythene X because transpiration takes place through leaves

(b) Polythene Y because transpiration takes place through stems

(c) Polythene X because photosynthesis takes place through leaves

(d) Polythene Y because photosynthesis takes place through stems.

9. A blood pressure is developed when the blood rushes through the veins in our body. Which of the given statements is incorrect with reference to the above fact?

(a) The instrument used to measure the blood pressure is called as sphygmomanometer.

(b) The pressure is higher in ventricles when they contract to pump the blood out

(c) The pressure is lower in ventricles when they relax to receive the blood

(d) None of these

10. Phloem, a vascular tissue helps in conduction of prepared food through the process of

(a) Transpiration pull                 (b) Osmosis

(c) Translocation                          (d) Ascent of Sap

11. The blood cells that form a part of body’s defence mechanism are

(a) Red blood cells                       (b) Platelets

(c) White blood cells                   (d) All of these

Answer Key:

1. (d)
2. (c)
3. (d)
4. (c)
5. (a)
6. (d)
7. (d)
8. (a)
9. (d)
10. (c)
11. (c)