Which of the following has not the protonephridia as an excretory organ?
1. Rotifers
2. Amphioxus
3. Planaria
4. Earthworm
Which of the following is not the primary function of protonephridia?
1. Ionic volume regulation
2. Fluid volume regulation
3. Osmoregulation
4. Excretion
If one goes from the outer side to the inside, which of the following parts comes first?
1. Hilum
2. Calyces
3. Pelvis
4. Cortex
Our excretory system has
1.Two million nephrons
2.One million nephrons
3.Two million neurons
4.One million neurons
For the ejection of urine the voluntary signal is given by
(1) ANS
(2) CNS
(3) PNS
(4) Afferent arterioles
Micturition reflex is
(1) Hormonal mechanism to control Micturition
(2) Neural mechanism to control Micturition
(3) Local mechanism to control Micturition
(4) Both B and C
How much of urea is excreted out per day?
(1) 50g
(2) 28g
(3) 10g
(4) 5g
Which of the following has no role in the elimination of excretory wastes?
(1) Kidneys
(2) Lungs
(3) Skin
(4) Oesophagus
How much Carbon dioxide is removed by lungs?
(1) 200mL/second
(2) 200mL/minute
(3) 200mL/day
(4) 200mL/hour
Haemodialysis
(1) A process for removal of extra blood
(2) A process for removal of extra cellular fluid
(3) A process of removal of urea
(4) A process of dilation of blood vessels