excretory products and elimination

Question 1

__, ___ and ___ are the

major forms of nitrogenous wastes excreted by the animals

Answer 1

Ammonia, urea and uric acid

Question 2

___ is the most toxic nitrogrneous waste and requires large amount of water for its elimination

Answer 2

ammonia

Question 3

___ is the least toxic nitrogrneous wase

Answer 3

uric acid (thus, doesnt require water for elimination)

Question 4

read dis ❤

Answer 4

The process of excreting

ammonia is called Ammonotelism

Question 5

‘Kidneys do not play any significant role in its removal’. what is it?

Answer 5

ammonia

Question 6

___ , ____ and ____ mainly excrete urea (ureotelic)

Answer 6

Mammals, many terrestrial amphibians and marine (cartilaginous) fishes

Question 7

___, ___, ___ and ____ excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water hence are called uricotelic animals

Answer 7

Reptiles, birds, land snails and insects

Question 8

Protonephridia or flame cells are excretory structures in ___, ____ some ____ and the cephalochordate - ___

Answer 8

Platyhelminthes, rotifers, some annelids and the cephalochordate – Amphioxus

Question 9

Protonephridia are primarily concerned with

Answer 9

ionic and fluid volume regulation, i.e., osmoregulation

Question 10

Nephridia eg

Answer 10

earthworms and other annelids

Question 11

`Name the excretory structure in prawn.

Solution : Antennal glands or green glands.

Answer 11

Solution : Antennal glands or green glands.

Question 12

kidney is between __ and ___ vertebra

Answer 12

last thoracic and third lumbar vertebra

Question 13

adult human measures __ - __cm in length, __ - __cm in width, _ - _ cm in thickness, average weight
of __-__ g.

Answer 13

10–12
5–7
2–3
120–170

Question 14

left kidney is little higher than the right one cause?

Answer 14

Left kidney is little higher than the right one because of more space being occupied by the liver on right side

Question 15

Towards the center of the inner concave surface of the kidney is a notch called hilum through which the ___, ___ and ___ pass

Answer 15

ureter, blood vessels and nerves pass.

Question 16

innermost tough protective layer is called

Answer 16

Renal Capsule

Question 17

renal capsule is made up of ___, ___, ___

Answer 17

made up of white fibrous connective tissue,

with few elastic fibres and few muscles

Question 18

middle covering of kidney

Answer 18

adipose capsule

Question 19

adipose capsule acts as

Answer 19

shock absorber

Question 20

___ is the outermost fibrous cover linking the kidney with the abdominal wall.

Answer 20

Renal Fascia

Question 21

just read dis 😊💖

Answer 21

As the kidneys are fused with the body wall on the dorsal side, peritoneal cover is present only on the ventral side. This arrangement is called retroperitoneal arrangement.