Page 2 - HA2

explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct
explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct.
(e) If Assertion and reason both are incorrect.

Assertion (A): The ascent of sap takes place due to suction caused by
transpiration.
Reason (R): the ascent of sap takes place in plants due to the present of a
tissue called Xylem.

Q6. (a) Define the process which is shown below -

(b) Explain how this process is helpful to plants.

Q7. Differentiate between Ammonotelic, Uricotelic and Ureotelic organisms with
one example each.
Q8. (a) If the heartbeat of a person is more than 72-80 beats per minute. What
does it signify?
(b) What is the purpose of using a stethoscope by doctors?

Q9. Name the process and the organ which help in removing the following wastes
from the body.
(a) Carbon dioxide
(b) Undigested food
(c) Urine
(d) Sweat

Q1O. Draw a diagram of human excretory system and label the following parts. Also
mention the function of each part.
(i) kidneys
(ii) ureters
(iii) Urinary bladder
(iv) Urethra