Test Preparation on Excretion system - Biology Test Series for NEET - 2020
1.
Kidney crystals are solid clusters of
2.
Waste products of adenine and guanine (Purines) metabolism are excreted by man as
3.
In man, the urea is mainly produced in
(a) Ornithine cycle is a cyclic process of urea formation which operates in the mitochondria of liver cells and has been studied by kreb’s and Henseleit.
4.
Which one of the following blood vessels in mammals would normally carry the largest amount of urea
(b) Since urea formation takes place in liver.
5.
The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of
6.
Which one of the following characteristics is common both in humans and adult frogs
(d) Adult frog and human exhibit ureotelism because there excretory waste product is urea.
7.
Uric acid is the chief nitrogenous component of the excretory products of
8.
Which of the following nitrogenous substance is highly toxic Or If liver from body is removed then which component of blood increases
(d) The ammonia is highly toxic because it has high pH, So, it must either be metabolised or expelled immediately out of body, so its concentration remains low in the blood.
9.
Aquatic reptiles are
(c) Ureotelic animals include mainly amphibians and mammals besides its annelids (earthworm) elasmo branch fishes (shark) and aquatic animals are ureotelic.
