Which of these components of blood is responsible for oxygen transport?
What is the average life span of RBCs?
What is the role of platelets?
The blood from systemic circulation first comes to which chamber of heart?
Which chamber of the heart pushes the blood into systemic circulation?
Double circulation is well developed in which of these animals?
Which of these initiates the heart beat?
What is the functional unit of human excretory system?
What is the main excretory product in humans?
What is the main excretory product in lizards?
Respiratory pigment in human body is
The kidneys in human beings are a part of the system for
The Oxygenated blood is carried from lungs to left auricle by
In which of the following group/ groups of animals, heart does not pump oxygenated blood to different parts of the body?
The part of blood that provides immunity
Excretory materials are formed in
In mammals, the urinary bladder opens into
Urea is formed in
The yellow colour of urine of the vertebrates is due to
Main functions of kidney is
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