NCERT Excretory Products their Elimination Mock Exam paper NTA NEET

NCERT Excretory Products their Elimination Mock Exam-1

Question No:1

Select the incorrect statement from the following:

[A] Animals accumulate ammonia, urea, uric acid, CO2 and water by metabolic activities
[B] Animal accumulate substance like ions (Na+, K+, Cl) and urea, ammonia, uric acid, CO2 and water are removed totally or partially
[C] Ammonia produced by metabolism is converted into urea in the liver of mammals
[D] Kidneys play significant rote in removal of ammonia directly



Question No:2

Select ammonotelic from the following

[A] Many bony fishes
[B] aquatic amphibians
[C] aquatic insects
[D] All



Question No:3

Select order of toxicity of
A. Ammonia
B. Urea
C. Uric acid

[A] A>B>C
[B] B>A>C
[C] C>A>B
[D] C>B>A



Question No:4

Which of the following excretory product require maximum water for its elimination?

[A] Ammonia
[B] Urea
[C] Uric acid
[D] Creatinine



Question No:5

Select incorrect statement from the following:

[A] Ammonia is readily soluble in water
[B] Ammonia is generally excreted by the process of diffusion
[C] Ammonia is excreted as ammonium ion through gill surface in fishes
[D] Ammonia is major and urea and uric acid are minor form of nitrogenous waste excreted by animals



Question No:6

Metabolic wastes containing nitrogen in our body are due to

[A] Carbohydrates
[B] Proteins
[C] Fats
[D] Vitamins



Question No:7

Excretion involves process in which

[A] harmful substances in the body are chemically changed
[B] substances of no further use or those present hi excessive quantities are thrown out of the body
[C] harmful substances are stored in cells before being eliminated
[D] expulsion of urine from the urinary bladder and sweat from the skin



Question No:8

Which of the following is Ureotelic?

[A] Mammals
[B] Most of the terrestrial amphibians
[C] Marine fishes
[D] All



Question No:9

Ammonia which is produced by metabolism is converted into A___ in the liver of mammals and released into ___B___ which is filtered and ___C out by kidney

[A] A-Uric acid, B-Blood, C-excreted
[B] A-Urea, B-Blood, C-excreted
[C] A-Amino acid, B-Blood, C—excreted
[D] A-Sugar, B-Blood, C-excreted



Question No:10

Which of the following is uricotelic?
(A) Reptiles
(B) Birds
(C) Insects
(D) Land snails

[A] A, B, C only
[B] B and C only
[C] A, D only
[D] A, B, C, D all



Question No:11

With respect to the mode of excretion, bony fish falls into what category of organism?

[A] Ureotelic
[B] Uricotelic
[C] Ammonotelic
[D] Osmoconformers



Question No:12

Aquatic animals are mostly ammonotelic because

[A] ammonia helps in checking inflow of water into body
[B] excretion of ammonia requires large amount of water which is available to these animals
[C] water contains less nitrogen
[D] these get less light



Question No:13

What gets increased in blood if liver becomes functionless?

[A] Urea
[B] Ammonia
[C] Uric acid
[D] Proteins



Question No:14

Nitrogenous excretory product of frog tadpole is

[A] Ammonia
[B] Urea
[C] Guanine
[D] Uric acid



Question No:15

In aquatic organisms, the waste end product of nitrogen metabolism is

[A] Urea
[B] Nitrogen
[C] Ammonia
[D] Allantois