Circulatory Systems in Organisms Quiz

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Questions and Answers

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'?

<p>AB (A)</p> Signup and view all the answers

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

<p>Annelids and chordates (D)</p> Signup and view all the answers

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

<p>Presence of Rh+ve antigen on RBC (B)</p> 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?

<p>Amphibians &amp; birds (B)</p> Signup and view all the answers

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

<p>Precise regulation of fluid flow (A)</p> Signup and view all the answers

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

<p>Solvent for transporting vitamins, hormones, enzymes, etc. (B)</p> Signup and view all the answers

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

<p>Venous heart (A)</p> Signup and view all the answers

What is the primary function of friction in physics?

<p>To generate heat energy (B)</p> Signup and view all the answers

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

<p>The force of friction increases (A)</p> Signup and view all the answers

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

<p>Rough surfaces have higher friction than smooth surfaces (A)</p> Signup and view all the answers

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

<p>A car moving up a steep hill (C)</p> Signup and view all the answers

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

<p>Lubrication decreases the force of friction (D)</p> Signup and view all the answers

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

<p>When an object is just starting to slide from rest (A)</p> Signup and view all the answers

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

<p>Potential energy to kinetic energy (D)</p> Signup and view all the answers

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

<p>The speed of the object (C)</p> Signup and view all the answers

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