Free Circulation MCQs with Answers

• A. Artificial active immunity
• B. Specific natural immunity
• C. Artificial passive immunity
• D. Natural passive immunity

Explanation: "The explanation for this question will be added soon!".

• A. Symplast
• B. Apoplast
• C. Vascular
• D. None of these

Explanation: Inside a plant, the apoplast is the space outside the plasma membrane within which material can diffuse freely.

• A. Osmosis
• B. Effusion
• C. Affusion
• D. None of these

Explanation: Diffusion is the movement of gases from an area of high concentration to an area of low concentration.resulting in the gradual mixing of…

• A. Phospholipid bilayer
• B. Channel proteins
• C. Both A and B
• D. None of the above

Explanation: Ions are unable to move through the phospholipid bilayer because the nonpolar tail regions of the phospholipids are hydrophobic.

• A. Increases.
• B. None
• C. Remains constant
• D. Decreases

Explanation: As the pH of the blood declines, the amount of oxygen bound to haemoglobin also declines.

• A. None of these
• B. Decreases
• C. Increases
• D. Remains constant

Explanation: Due to high metabolic activity at the tissue level, there is an accumulation of CO2.

• A. Lymphatic system
• B. Blood circulatory system
• C. Nervous system
• D. Defense system

Explanation: Tonsils are small, round masses of tissue that are located at the back of the throat.

• A. Lenticles
• B. Stomata
• C. Hydathodes
• D. Cuticle

Explanation: A hydathode is a type of specialized pore that can secrete excess water via guttation.

• A. Stomata
• B. Hydathodes
• C. Lenticels
• D. Cuticle

Explanation: A lenticel is a raised pore in the stem of a woody plant that allows gas exchange between the atmosphere and the internal tissues.

• A. Zero
• B. One
• C. Infinity
• D. Negative

Explanation: The water potential of pure water is defined as having a value of zero.

• A. Stomata
• B. Hydathodes
• C. Lenticels
• D. Cuticles

Explanation: Stomata are specialized openings in the leaves that facilitate gas exchange in plants.

• A. Respiration
• B. Guttation
• C. Vaporization
• D. Transportation

Explanation: Guttation or exudation is when excess water has to be forced out of the pores in plants; a hydathode is one such pore.

• A. Mitral contraction
• B. All of these
• C. Bicuspid contraction
• D. Tricuspid contraction

Explanation: The cusps of the valves are attached to the papillary muscles which are extensions of the wall of the ventricles through fibrous cords…

• A. Antibodies
• B. Interferon
• C. All of these
• D. Natural killer Cell

Explanation: A natural killer cell is the cell which directly kills the cell infected by the pathogen.

• A. Skin and joints
• B. Muscles
• C. Muscles, skin and joints
• D. None

Explanation: Muscles, skins and joints are common sites for autoimmune diseases.

• A. Water pressure
• B. Root pressure
• C. Peer pressure
• D. Road pressure

Explanation: When we cut a tree, water is produced in the cut portion due to root pressure which is defined as the upward movement of fluids in the…

• A. To serve as imunoglobulins
• B. All of these
• C. To act as a buffer
• D. To serve as reserve proteins

Explanation: Plasma proteins have several functions. Plasma proteins, such as albumin and globulin, that help maintain the colloidal osmotic pressure…

• A. Rabies
• B. Flu
• C. Smallpox
• D. Dengue

Explanation: Edward Jenner and Louis Pasteur discovered effective vaccines against smallpox and rabies respectively.

• A. Ernst Munch
• B. Charles Darwin
• C. Stocks
• D. Robert Hooke

Explanation: The pressure-flow hypothesis was formulated by Ernst Münch in 1930.The pressure flow hypothesis, also known as the mass flow hypothesis…

• A. Macrophages
• B. Leukocytes
• C. Eosinophils
• D. Basophils

Explanation: Given that HIV is a blood-borne pathogen, a number of cell types have been proposed to be the sites of latency, including resting memory…