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1
The process of purification of blood in which dialysis through an artificial kidney has to be carried out at frequent intervals is called _________________ .
Chemodialysis
Haemodialysis
Liverdialysis
None of these .
2
Which of the following are correct ?
(a) The process of removal of wastes from the cells of living organisms is called excretion .
(b) The organ system responsible for the removal of wastes is called circulatory system .
Only (a) is correct .
Both (a) and (b) is correct .
3
Kidney failure can be treated by the use of _____________ .
Haemo machine
Dialysis machine
Peritoneal Dialysis
4
In the excretory system _______________ has sweet gland .
Lungs
Skin
Liver
5
In higher multicellular organisms the excretory organs could be simple tubular structures called _______________ in flatworms and leech.
Protonephridium
Nephridium
Metanephridium
6
During dialyses the artificial kidney maintains the balance of ___________ and __________________ salts in a patient whose kidneys have failed.
Sodium and potassium
Iron and carbon
Phosphorus and calcium
7
In the excretory system the major ______________ products are carbon dioxide, excess water, and nitrogenous compounds like ammonia, urea, uric acid, etc.
Respiratory
Excretory
Circulatory
8
In the excretory system __________ excretes cholesterol .
Kidney
9
In plants excess water is excreted through stomata and the process is called ____________________ .
Transpiration
Translocation
Transportation
10
(b) The organ system responsible for the removal of wastes is called excretory system .
Only (b) is correct .
11
(a) Kidney work in pairs, but they are so efficient that even if one gets damaged, the person can still lead a healthy life .
(b) The kidneys are two bean- shaped organs in the urinary system.
(c) They help the body to pass waste as urine.
Only (a) and (b) is correct .
Only (b) and (c) is correct .
Only (a) and (c) is correct .
All of these .
12
(a) Liver has sweat glands, through which we excrete small amounts of water, urea and salts.
(b) The liver also excretes cholesterol.
13
(a) Kidneys help the body to pass waste as urine.
(b) Kidneys also help filter blood before sending it back to the Heart.
(c) The kidney perform many crucial functions, including :maintaining overall fluid balance
14
(a) The liver excretes bile, which contains bile pigments.
(b) Liver is a reddish brown gland situated on the right side in the upper part of the abdomen .
(c) It is the largest gland of our body .
15
(c) Chemical reactions occur in the cells of living organisms all the time to carry out the life processes. The sum of these reactions is called metabolism .
Only (b)and (c) is correct .