Tag: biology

Questions Related to biology

Lymph drains excess fluid from extracellular space back into

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

  1. Blood

  2. Lymph node

  3. Lymphatic channel

  4. Lymph gland

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Correct Option: A
Explanation:

Lymph is a colourless fluid and connective tissue. It carries an excess of the extracellular fluid back to the venous system or it absorbs the excess fluid from the tissue and to return it to the blood. Lymphatic capillaries join and form lymphatic vessels further it forms lymphatic ducts. It is of two types: thoracic duct and right lymphatic duct. A small bean- shaped lymphoid organ surrounded by fibrous connective tissue carries fluid, nutrients & waste material between the body are lymph nodes or lymph glands.

Thus, the correct answer is A.

Highest quantity of energy occurs in the

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

  1. Primary producers

  2. Herbivores

  3. Carnivores

  4. Decomposers

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Correct Option: A
Explanation:

Highest quantity of energy occurs in primary producers. Producers trap sunlight in the form of solar energy and use it in the process of photosynthesis to prepare food and store the food in the form of starch.

One of the difference between blood and lymph is that

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

  1. Blood has RBCs and WBCs while lymph has lymphocytes.

  2. Blood has RBCs while lymph has no WBCs.

  3. Blood has WBCs while lymph has RBCs.

  4. Blood has dissolved organic salts while lymph has no such inorganic salt.

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Correct Option: A
Explanation:

Blood is red in colour due to presence of RBCs. Blood plasma contains RBCs, WBCs and platelets. It can clot due to presence of more amount of fibrinogen. Lymphs are colourless due to absence of RBCs. The lymph plasma contains WBCs and lymphocytes. It contains diffusible proteins. It clots slowly due to presence of less fibrinogen.

Blood is stored in

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

  1. Lymph

  2. Kidney

  3. Spleen

  4. Heart

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Correct Option: C
Explanation:

The spleen is a brownish fist-sized organ located in the upper left side of the abdomen, tucked into a space between the stomach, pancreas and left kidney. It’s one of those organs that people know about, but aren’t sure what it does. Essentially, the spleen is a storage container and filter for blood, though it is part of the lymphatic system. In fact, it’s the largest lymph node in the body. One of its tasks is to remove harmful bacteria and viruses in the blood stream. Its other major task is removing or storing certain blood cells. Blood is not stored in heart, kidney and lymph. Thus, option C is correct.

The graveyard of RBC is

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

  1. Liver

  2. Gall bladder

  3. Bone marrow

  4. Spleen

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Correct Option: D
Explanation:

Spleen is one of the most important organ of the body. Here are few of its functions
1) In fetal and some part of the neonatal period the spleen works not only as the storehouse of red blood cells or RBCs , but also is one of the important organ for hematopoiesis I.e., the formation of new RBCs. 
2) It also acts as a storehouse of various types of white blood cells or WBCs which are used to fight against various infections like pneumococcus, meningococcus etc.
3) It is also known as graveyard of RBC as old and damaged RBC are destroyed in spleen. 

A malfunction of the lymph nodes would most likely interfere with the

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

  1. Release of carbon dioxide into the lymph.

  2. Filtering of glucose from the lymph.

  3. Release of oxygen into the lymph.

  4. Filtering of bacteria from the lymph.

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Correct Option: D
Explanation:
The lymphatic system not only regulates fluid amounts in the blood but also helps to fight infection. The lymph nodes located throughout our bodies, produce white blood cells and filter harmful bacteria, which is why they tend to enlarge when we have an infection.
Therefore, the correct answer is option D.

Lymph does not contain 

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

  1. Red blood cells

  2. White blood cells

  3. Platelets

  4. Both A and C

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Correct Option: D
Explanation:

Lymph does not contain RBCs and blood platelets. Leucocyte count is low but the lymphocyte (WBCs) content is quite high due to passage of lymph through lymph nodes. 

Spleen is a _______

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

  1. Part in heart

  2. Part of central nervous system

  3. Lymphatic organ

  4. All of the above

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Correct Option: C
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.

Spleen is ________

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

  1. Blue in colour

  2. Reddish brown in colour

  3. Greenish blue in colour

  4. All of the above

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Correct Option: B
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.

Cellular part of lymph contains

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

  1. Only Leukocytes

  2. Water

  3. Proteins

  4. All of the above

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Correct Option: A
Explanation:

Cellular part of lymph contains only leukocytes (mostly lymphocytes) and no blood platelets.