Tag: biology

Questions Related to biology

Which of the following is not a function of spleen?

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. It produces lymphocytes

  2. It destroys worn out RBCs, so also known as graveyard of RBCs

  3. In an embryo, it produces RBCs

  4. None of these

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Correct Option: D
Explanation:

Functions:- 
1. It acts like a blood reservoir. In an emergency such as haemorrhage, physical or emotional stress, or in carbon monoxide poisoning, the spleen releases the stored blood into the blood stream.
2. It produces lymphocytes.
3. It destroys worn out RBC, so also known as graveyard of RBC.
4. In an embryo it produces RBC.

Spleen is situated

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. In the abdomen

  2. In the brain

  3. In leg

  4. In the ears

Show answer
Correct Option: A
Explanation:

Spleen is a large lymphatic organ, about the size of a clenched fist, reddish brown in colour and situated in the abdomen behind the stomach and above the left kidney.

Which of the following is not a function of lymph?

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. Supplies oxygen and prevents spreading of infections

  2. Returns proteins to the blood

  3. Absorbs vitamins and minerals

  4. None of the above

Show answer
Correct Option: D
Explanation:

Lymph supplies oxygen, nutrients, hormones, etc to the cells and removes metabolic wastes from the cells. It destroys microorganisms in the lymph nodes and prevents spreading of infections. It absorbs and transports fat, fat soluble vitamins and minerals from intestine. It maintains the volume of blood. It returns proteins and fluids to the blood. 

Thus, the correct answer is option D.

Which of the following are circulating fluids of the body?


a) Blood         b) Hormones       c) Lymph

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. a, b

  2. b, c

  3. a, c

  4. All of the above

Show answer
Correct Option: C
Explanation:

All such functions that need transport are performed by the two circulating fluids the blood and the lymph. Beside transport, These fluids has some other functions also.

Which of the following destroys worn out RBCs ?


a) Liver
b) Kidney
c) Spleen

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. a, b

  2. a, c

  3. b, c

  4. All of the above

Show answer
Correct Option: B
Explanation:

Spleen's main function is to act as a filter for blood. It recognizes and removes old, malformed, or damaged red blood cells. It destroys worn out RBC  (sharing this function with liver)

Lymph helps is the absorption of

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. Carbohydrate

  2. Proteins

  3. Fats

  4. All of the above

Show answer
Correct Option: C
Explanation:

Lymph is an integral part of the circulatory system which plays an important role in the defensive mechanism. It does not absorb vitamins and minerals but fats from the intestinal villi.

So, the correct answer is option C.

Which of the following has the similar composition as lymph?

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. Red blood cells 

  2. Blood plasma 

  3. White blood cells 

  4. Nutrients 

Show answer
Correct Option: B
Explanation:

Lymph is the interstitial fluid present in the tissue space and it has accumulated due to the pressure difference between the arteries and the veins. It has a composition similar to that of the blood plasma, that it contains small solutes, water ions, proteins lymphocytes etc.

A. Red blood cells are the formed elements, containing the respiratory pigment called haemoglobin.
B. Blood plasma is the fluid part of the blood, whose composition is similar to that of the blood.
C. White blood cells are the formed elements involved in the immunity.
D. Nutrients are the food ingredients.
Hence, the correct answer is 'Blood Plasma'

Which of the following has the similarities with the lymph?

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. Red blood cells

  2. Blood plasma

  3. White blood cells

  4. Nutrients

Show answer
Correct Option: B
Explanation:

Since the lymph is derived from the interstitial fluid, its composition continually changes as the blood and the surrounding cells continually exchange substances with the interstitial fluid. It is generally similar to blood plasma, which is the fluid component of blood. Lymph returns proteins and excess interstitial fluid to the blood stream. Lymph may pick up bacteria and bring them to lymph nodes, where they are destroyed. Metastatic cancer  cells can also be transported via lymph. Lymph also transports fats from the digestive system (beginning in the lacteals) to the blood via chylomicrons.


So, the correct option is 'Blood plasma'.

Which of the following molecule enters into the lymph from intestine?

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. Fat molecules

  2. Glycerols

  3. Plasma protein

  4. None of the above

Show answer
Correct Option: A
Explanation:
  • Chyle is the liquid form of chyme that enters lymph vessels from the small intestine. It is rich in fats, these fats along with lymph often appear as milk. The fat molecules from the intestine will make their way into the lymph.
  • Glycerols also called as glycerine is a colorless, odorless substance. It is found as an intermediate in metabolic pathways.
  • Plasma protein is the proteins that make-up blood plasma. They help in maintaining osmotic pressure, clotting, and transport of certain lipids, enzymes and hormones.
So the correct option is "Fat molecules".

Lymph transports white blood cells from

biology soldiers of defense human lymphatic system lymph and its function lymph and tissue fluid

  1. Spleen 

  2. Pancreas 

  3. Lymph nodes

  4. liver 

Show answer
Correct Option: C
Explanation:

A. Spleen also referred to as the graveyard of RBCs removes worn-out RBCs and fights infections. It is a part of the lymphatic system

B. Pancreas The lymphatic system of pancreas drains excess fluid that contains leaking hormones and some enzymes from interstitial spaces.
C. Lymph nodes filter the lymph as it passes through these nodes. They board lymphocytes which help in removing wastes and antigens. In case of infection, lymph nodes transport WBCs to blood
D. Liver produces a large amount of lymph, the lymphatic system of liver functions as a tissue drainage system and immunological control system. 
So the answer is C