Biology Notes for Class 9 Chapter 9

What is the actual universal donor blood group?

Different veins from head, shoulders, and arms joined together and form ____

Right and left common iliac veins join to form__________

Gonadal arteries supply blood to _________

The alternating contraction and relaxation of heart chambers _________

The opening between right atrium and right ventricle is guarded by a valve called _______

Average human heart beat per minute ___________

William Harvey died in _______

Number of thrombocytes (Platelets) in one cubic millimeter of blood is _______

Total number of blood group systems recognized by the International Society of Blood Transfusion ________

The type of valve present at the base of pulmonary trunk _________

If a thrombus dislodges and becomes free floating, it is called ________

In the embryonic and faetal life, red blood cells are formed in __________

A molecule that can stimulate an immune response __________

Which blood Group contains Antigen A?

Which of the following blood vessels have valves to prevent back flow of blood?

The normal pH of Human blood is ___________

Which one is an agranulocyte?

A person having blood group O can receive blood from ___________

Blood clotting protein ___________

Percentage of water in plasma is ________

The blood pressure in arteries is ______________

The blood cells which do not contain pigments and are colourles ________

The average number of leukocytes in one cubic millimeter of blood ______

In one heartbeat, diastole remains about second _________

The third part of blood circulatory system __________

Percentage of cells or cell like bodies in blood ___________

When fibrinogen makes blood clot it separates from blood and the remainder is called_____

The most common symptom of myocardial infarction is _______

Which of the following is a genetic problem due to mutations in the gene of hemoglobin?

These are smallest blood vessels __________

ll veins coming from stomach, spleen, Pancreas and Intestine drain into ____

In normal adults, the mass of heart is ________

“Lubb-dubb” can be heard with the help of _________

Average life span of erythrocytes __________

Which cell play role in body’s defence?

Transpiration from plant surface takes place through__________

Which of the following prevents blood clotting?

Through which blood vessels the materials are exchanged between the blood and the surrounding tissues?

The tissue layer that is common in all types of blood vessels _________

The world celebrates the International Thalassemia Day on ________

The outermost layer of the root____________

Average Number of red blood cells in a cubic millimeter of blood ______

Arteriosclerosis is a general term describing __________

Universal blood recipients are __________

When does our heart takes rest?

Percentage of plasma in blood is ____________

Karl Landsteiner discovered the Rh-blood group system in _________

According to the pressure-flow mechanism, the actual force behind the movement of food in phloem_______

In most plants, food is transported in the form of __________

Renal arteries supply blood to___________

Intercostal arteries supply blood to _________

Antigens are present on the surface of ________

Which rate of transpiration doubles with every rise of temperature?

The largest and strongest chamber in heart is_______

Which organ belongs to circulatory system?

A person with AB blood group can donated to______________

Which blood cells are the most numerous in healthy human blood?

In humid, air the rate of transpiration is _____________

The pumping action of heart was discovered by _______

Celiac artery and superior mesenteric artery supply blood to _________

Heart attack may be caused by blood clot in ________

During atrial systole _________

World heart Day is held on ________

Universal blood donors are ______________

Roughly how much of water that enters a plant is lost via transpiration?

Transpiration rate depends upon ___________

In persons with blood group O ___________

The temperature range at which transpiration stops ___________

In which of the following blood vessels, the blood pressure is low?

The average volume of blood in adult human’s body is __________

ABO blood group system was discovered by __________

The blood cells which help in blood clotting _________

Average life span of platelets __________

William Harvey was born in _________

Who discovered the pathway of blood circulation?

Angina pectoris means_______

Atherosclerosis is commonly referred to as a ______

The blood vessels that carry blood away from heart _________

A person having blood group B can donate blood to ____________

Which part of plant is responsible for transporting food?

The roots and root hairs absorb water from soil by___________

Each external iliac becomes femoral artery in upper thigh and gives branches to ______

Uncontrolled production of defective white blood cells _________

Hepatic artery supplies blood to _________

The opening between left atrium and left ventricle is guarded by a valve called _________

As aorta passes down through thorax, it becomes ________