Circulatory Systems in Organisms Quiz

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What is the function of Eosinophils in the body?

Secreting histamine and serotonin

Resisting infections

Causing allergic reactions (correct)

Phagocytosis

What is the color of Platelets (Thrombocytes)?

Colorless (correct)

Blue

Red

Yellow

Which plasma protein is responsible for blood coagulation?

Globulins

Fibrinogen (correct)

Albumins

Inorganic substances

Which blood group is considered the 'Universal Recipient'?

AB Signup and view all the answers

In which organisms does circulation involve the use of body fluids like blood and lymph?

Annelids and chordates Signup and view all the answers

What does the presence of Rh factor indicate in blood typing?

Presence of Rh+ve antigen on RBC Signup and view all the answers

In which organisms is the circulation pattern such that deoxygenated and oxygenated blood get mixed up in a single ventricle?

Amphibians & birds Signup and view all the answers

What is the advantage of using blood vessels for circulation, as opposed to sinuses?

Precise regulation of fluid flow Signup and view all the answers

What is the function of water in the plasma in terms of circulation?

Solvent for transporting vitamins, hormones, enzymes, etc. Signup and view all the answers

Which type of heart receives impure (deoxygenated) blood only?

Venous heart Signup and view all the answers

What is the primary function of friction in physics?

To generate heat energy Signup and view all the answers

What happens to the force of friction if the surface area of contact between two objects is increased?

The force of friction increases Signup and view all the answers

How does the roughness of surfaces affect the force of friction?

Rough surfaces have higher friction than smooth surfaces Signup and view all the answers

In which scenario would the force of static friction be greater than the force of kinetic friction?

A car moving up a steep hill Signup and view all the answers

What effect does lubrication have on the force of friction between two surfaces?

Lubrication decreases the force of friction Signup and view all the answers

In which scenario would the force of friction be at its maximum value?

When an object is just starting to slide from rest Signup and view all the answers

What type of energy transformation occurs due to the presence of friction in mechanical systems?

Potential energy to kinetic energy Signup and view all the answers

Which factor affects the force of friction when an object is sliding on a surface?

The speed of the object Signup and view all the answers