Free Circulation MCQs with Answers

• A. Brain
• B. Upper limb
• C. Heart
• D. Lower limb

Explanation: The primary task of the iliac artery is to supply blood to the pelvis and the lower limb.

• A. Imbibition
• B. Guttation
• C. Plasmolysis
• D. None of these

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

• A. Stomach
• B. Thyroid Gland
• C. Brain
• D. Groin and neck

Explanation: There are hundreds of lymph nodes in the human body. They are located deep inside the body, such as around the lungs and heart, or closer…

• A. Water potential
• B. Pressure potential
• C. Osmotic potential
• D. None of these

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

• A. Epidermis
• B. Endodermis
• C. Cortex
• D. Vascular bundle

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

• A. K
• B. Mg
• C. Cu
• D. Fe

Explanation: Potassium (K) is crucial for stomatal function in plants. It opens stomata by entering guard cells, promoting turgidity and pore opening.

• A. Hypertonic solution
• B. Hypotonic solution
• C. Isotonic solution
• D. All A,B and C

Explanation: A hypertonic solution refers to an external solution that has a higher concentration of solutes compared to the cell sap or cytoplasm.

• A. The flow of blood into the pulmonary artery will be reduced.
• B. The flow of blood into the aorta will be slowed down.
• C. The pacemaker will stop working.
• D. The blood will tend to flow back into the left atrium.

Explanation: When the chordae tendineae contract, they pull all three cusps down, allowing blood to flow into the right ventricle and opening the…

• A. Lymph nodes
• B. Blood
• C. Lymphatic vessels
• D. Lymph

Explanation: While the blood and lymph systems have different roles in the body, they are interconnected and work together to maintain proper fluid…

• A. Digestive tract
• B. Mucosa
• C. Submucosa
• D. All of these are correct

Explanation: Lymphoid masses are abnormal growths or swellings that can occur in the lymphoid tissues of the body.

• A. Thymus
• B. Lymph nodes
• C. Adrenal glands
• D. Lymphatic vessles

Explanation: Lymphocytes (B and T cells) are located in the lymph nodes of the lymphatic system.

• A. Erythrocytes
• B. Lymphocytes
• C. Phagocytes
• D. Thrombocytes

Explanation: The thymus, spleen, tonsils, and adenoids produce lymphocytes. The thymus is the primary lymphoid organ where T cells (a type of…

• A. Synovial fluid
• B. Semen
• C. Amniotic fluid
• D. Lymph

Explanation: The lymph vessels empty in veins so lymph is a fluid in transit between interstitial fluid and blood. This option is correct.

• A. Water potential
• B. Cohesion tension
• C. Root pressure
• D. Imbibition

Explanation: Imbibition plays no role in transport of water up into the xylem. Imbibition is a type of diffusion where the water is absorbed by the…

• A. Plasmolysis
• B. Imbibition
• C. Turgidity
• D. Endosmosis

Explanation: "Imbibition" can be defined as the taking up of fluid by a colloidal system resulting in swelling. So, option B is correct.

• A. 1
• B. 2
• C. 3
• D. Numerous

Explanation: There are far more afferent vessels bringing in lymph than efferent vessels taking it out to allow for lymphocytes and macrophages to…

• A. Heart
• B. Liver
• C. Spleen
• D. Pancreas
• E. lymph nodes

Explanation: Just as the lymph nodes filter lymph, the spleen filters blood, exposing it to macrophages and lymphocytes that destroy foreign particles…

• A. Locally
• B. Systemic
• C. Metastasis
• D. Invasion

Explanation: Metastasis is the movement or spreading of cancer cells from one organ or tissue to another.

• A. 45
• B. 35
• C. 15
• D. 25

Explanation: The stomata are closed at high temperatures to prevent excessive water loss from leaves through transpiration.

• A. Companion cell
• B. Sieve tube cells
• C. Vessels
• D. Parenchyma

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