Biology Notes for Class 9 Chapter 9

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

Universal blood recipients are __________

In persons with blood group O ___________

Heart attack may be caused by blood clot in ________

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

Hepatic artery supplies blood to _________

Celiac artery and superior mesenteric artery supply blood to _________

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

ABO blood group system was discovered by __________

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

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

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

The outermost layer of the root____________

Which of the following prevents blood clotting?

The alternating contraction and relaxation of heart chambers _________

Average life span of erythrocytes __________

Karl Landsteiner discovered the Rh-blood group system in _________

Who discovered the pathway of blood circulation?

Transpiration from plant surface takes place through__________

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

Arteriosclerosis is a general term describing __________

Which part of plant is responsible for transporting food?

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

A person having blood group B can donate blood to ____________

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

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

The most common symptom of myocardial infarction is _______

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

The world celebrates the International Thalassemia Day on ________

The largest and strongest chamber in heart is_______

Blood clotting protein ___________

These are smallest blood vessels __________

Universal blood donors are ______________

Average life span of platelets __________

World heart Day is held on ________

William Harvey was born in _________

Uncontrolled production of defective white blood cells _________

Which organ belongs to circulatory system?

The third part of blood circulatory system __________

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

Renal arteries supply blood to___________

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

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

The blood cells which help in blood clotting _________

The normal pH of Human blood is ___________

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

The blood vessels that carry blood away from heart _________

Which rate of transpiration doubles with every rise of temperature?

The pumping action of heart was discovered by _______

A molecule that can stimulate an immune response __________

Angina pectoris means_______

Which blood Group contains Antigen A?

William Harvey died in _______

Which cell play role in body’s defence?

During atrial systole _________

Percentage of cells or cell like bodies in blood ___________

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

Transpiration rate depends upon ___________

In one heartbeat, diastole remains about second _________

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

Intercostal arteries supply blood to _________

A person having blood group O can receive blood from ___________

Atherosclerosis is commonly referred to as a ______

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

Which one is an agranulocyte?

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

When does our heart takes rest?

As aorta passes down through thorax, it becomes ________

Average human heart beat per minute ___________

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

What is the actual universal donor blood group?

Antigens are present on the surface of ________

Percentage of plasma in blood is ____________

Gonadal arteries supply blood to _________

In humid, air the rate of transpiration is _____________

The blood pressure in arteries is ______________

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

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

The roots and root hairs absorb water from soil by___________

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

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

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

The temperature range at which transpiration stops ___________

Right and left common iliac veins join to form__________

Percentage of water in plasma is ________

In normal adults, the mass of heart is ________

A person with AB blood group can donated to______________