excretory system

Question 1

excretory waste present in animals

Answer 1

ammonia, urea, uric acid, carbon dioxide, water
and ions like Na +
, K+
, Cl–
, phosphate, sulphate,

Question 2

types of nitrogenous waste excreated by the animals

Answer 2

. Ammonia, urea and uric acid are the major

forms of nitrogenous wastes excreted by the animals

Question 3

most toxic nitogenous waste

Answer 3

ammonia

Question 4

least toxic nitrogenous waste

Answer 4

uric acid

Question 5

nitrogenous waste require most amount of water for excreation

Answer 5

ammonia

Question 6

nitrogenous waste rq.least water for excretion

Answer 6

uric acid

Question 7

The process of excreting ammonia is

Answer 7

Ammonotelism

Question 8

Ammonotelic organisms includes

Answer 8

Many bony fishes,
aquatic amphibians and aquatic insects
Ammonia, as it is readily soluble, is generally excreted by diffusion across
body surfaces or through gill surfaces (in fish) as ammonium ions

Question 9

ureotelic organism includes

Answer 9

Mammals, many terrestrial

amphibians and marine fishes mainly excrete urea

Question 10

Ammonia produced by metabolism is converted into urea in which organ

Answer 10

liver

Question 11

animals which are uricotelic

Answer 11

Reptiles, birds, land snails and insects

Question 12

excretory structures in Flatworms

Answer 12

Protonephridia or flame cells

Question 13

excretory structures in Platyhelminthes

Answer 13

Protonephridia or flame cells

Question 14

excretory structures in rotifers

Answer 14

Protonephridia or flame cells

Question 15

excretory structures in annelids

Answer 15

Protonephridia or flame cells or nephridia

Question 16

excretory structures in cephalochordate

Answer 16

Protonephridia or flame cells

Question 17

excretory structures in Planaria

Answer 17

Protonephridia or flame cells

Question 18

excretory structures in Amphioxus

Answer 18

Protonephridia or flame cells