Biology questions
20584 published questions with worked solutions.
- Which of these is not a characteristic of open circulatory system?
- Double circulation is
- Double circulation is the characteristic feature of which of the following?
- The blood pumped by the __A__ ventricle enters the pulmonary artery, whereas the __B__ ventricle pumps blood into the aorta....
- Which of the following circulations is not a type of systemic circulation?
- In diastole, the heart is filled with the blood. This blood is
- Which of the given statements is true for double circulation?
- The systemic circulation provides nutrients, __A__ and other essential substances to the __B__ and takes __C__ and other harmful...
- How many double circulations are normally completed by the human heart in one minute?
- Systemic heart refers to
- Blood is a
- In open vascular system, the circulating fluid is called
- Human blood consists of
- Major proteins in the human blood are
- Formed elements present in the human blood are
- In open circulatory system, blood pumped by heart passes in which of the following?
- In humans, RBCs are formed in
- Most abundant cells in the human blood are
- Formed elements constitutes what percentage of the blood?
- RBCs have an average lifespan of