Excretion in Animals
Excretion in Animals: Overview
This topic covers concepts such as Urea, Excretory Products and Their Elimination, Nitrogenous Waste Materials, Ammonotelism, Ureotelism, Uricotelism, Non Nitrogenous Waste Materials, Osmoregulation, Excretion, and Excretory Organs.
Important Questions on Excretion in Animals
Uric acid is the chief nitrogenous component of the excretory products of
Consider the following four statements (a-d) about certain desert animals such as kangaroo, rat.
(a) They have dark colour and high rate of reproduction and excrete solid urine
(b) They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hair
(c) They feed on dry seeds and do not require drinking water
(d) They excrete very concentrated urine and do not use water to regulate body temperature.
Which two of the above statements for such animals are true?
Earthworms are
In ornithine cycle, which of the following wastes are removed from the blood?
Uricotelism is found in
In ureotelic animals, urea is formed by the
A patient suffering from cholera is given saline drip because
Uric acid is nitrogenous waste in
Aquatic reptiles are:
Which of the following are uricotelic animals?
The main nitrogenous waste formed in the body of a human is urea.
_____ (Urea/Ammonia) is formed through the ornithine cycle in the body of a human.
Which of the following substance is the main nitrogenous waste formed in the body of a human?
The main nitrogenous waste in the body of a human is ammonia.
Urea is formed in the _____ (liver/stomach) in the body of a human.
Uricotelic animals include:
Salt and water balance in our body is maintained by a process called
What are the different kinds of waste products produced in animals?
In rabbit and humans, the kidney is
Consider the following statements.
Flame cells are excretory structures in flatworms.
Green glands are excretory organs in annelids.
. Columns of Bertini are the conical projections of the renal pelvis into the renal medulla between the renal pyramids.
