Kerala Class 9 Biology Chapter 5 Excretion to Maintain Homeostasis MCQ Question and Answer for Students. SCERT Kerala Class 9 Biology Part 2 Excretion to Maintain Homeostasis MCQ.
1.) ____ expels water and salts.
a) Kidney b) Skin c) Liver
2.) ____ expels urea and water.
a) Kidney b) Skin c) Liver
3.) ____ is the waste processing unit.
a) Kidney b) Skin c) Liver
4.) ____ are formed by the breakdown of proteins.
a) Urea b) Amino acids
5.) Liver uses ____ for the synthesis of urea.
a) Carbon dioxide b) Oxygen
6.) ____ is the largest organ of the human body.
a) Kidney b) Skin c) Liver
7.) ____ are the basic structural and functional units of kidneys.
a) Nephrons b) Pelvis
8.) ____ is the light colored outer part of the kidney.
a) Medulla b) Cortex
9.) ____ is the dark colored inner part of the kidney.
a) Medulla b) Cortex
10.) Ultrafilters of the nephrons are found in ____.
a) Cortex b) Medulla
11.) Long tubules of nephrons are found in ____.
a) Cortex b) Medulla
12.) Urine from the filters flows into ____.
a) Medulla b) Pelvis
13.) The blood vessel that comes out of Bowmann’s capsule is called ____ vessel.
a) Afferent b) Efferent
14.) The branch of renal artery which enters the Bowmann’s capsule is called ____ vessel.
a) Afferent b) Efferent
15.) ____ is the long tubule which connects the Bowmann’s capsule and the collecting duct.
a) Renal tubule b) Collecting duct
16.) Absorption of water takes place in ____.
a) Renal tubule b) Collecting duct
17.) In ____, there is no specific excretory organ.
a) Earthworm b) Amoeba c) Insect
18.) In reptiles and birds, excretory organs are ____.
a) Nephridia b) Kidney c) Malphigian tubules
19.) In frogs, excretory organs are ____.
a) Nephridia b) Kidney c) Malphigian tubules
20.) In insects, excretory organs are ____.
a) Nephridia b) Kidney c) Malphigian tubules
21.) In earthworms, excretory organs are ____.
a) Nephridia b) Kidney c) Malphigian tubules
22.) In certain grasses and shrubs, excess water is eliminated through ____.
a) Hydathodes b) Stomata
23.) The main excretory product of reptiles and birds is ____.
a) Ammonia b) Uric acid
24.) The main excretory product of fishes is ____.
a) Ammonia b) Uric acid
25.) The first artificial kidney was designed by _____.
a) Doctor Joseph E.Murray b) Doctor Willem Johan Kolff
26.) ____ conducted the first kidney transplantation surgery.
a) Doctor Joseph E.Murray b) Doctor Willem Johan Kolff
27.) Inflammation of kidneys due to infection or intoxication causes ____.
a) Kidney stone b) Uremia c)Nephritis
28.) Deposition of crystals of calcium salts in kidney or urinary tract causes ____.
a) Kidney stone b) Uremia c) Nephritis
29.) Different types of kidney diseases, nephritis, diabetes, high blood pressure cause ____.
a) Kidney stone b) Uremia c) Nephritis
30.) ____ regulates the pH and the amount of water and salts resent in the blood.
a) Kidney b) Liver
31.) The entire blood in the body passes through kidneys at least ____ times in 24 hrs.
a) 400 b) 350
32.) About ____ liters of blood is filtered to form 170 liters of glomerular filtrate.
a) 1800 b) 180
33.) Approximately ____ ml of glomerular filtrate is formed is formed in every minute.
a) 127 b) 172
34.) Each kidney is comprised of about ____ lakh nephrons.
a) 13 b) 12
35.) Urine formed in the kidneys reaches the urinary bladder through the ____.
a) Urethra b) Ureters
36.) From urinary bladder, urine is expelled out through the ____.
a) Urethra b) Ureters
Answer: 1.b), 2.a), 3.c), 4.b), 5.a), 6.b), 7.a), 8.b), 9.a), 10.a), 11.b), 12.b), 13.b), 14.a), 15.a), 16.b), 17.b), 18.b), 19.b), 20.c), 21.a), 22.a), 23.b), 24.a), 25.b), 26.a), 27.c), 28.a), 29.b), 30.a), 31.b), 32.a), 33.a), 34.b), 35.b), 36.a)
