Tag: transportation in animal and plants

Questions Related to transportation in animal and plants

The device used by the doctor to amplify the heartbeat is

evs transportation in animal and plants blood transfusion transfusion of blood blood and organ donation

  1. Periscope

  2. Thermometer

  3. Stethoscope

  4. Microphone

Show answer
Correct Option: C
Explanation:
The stethoscope is an acoustic (hearing) medical device used for auscultation (listening of internal sounds of the body. The doctor will place a small metal circle called a bell, against the chest, at the spot where a person can feel the heartbeat. Hence the device used by the doctor to amplify the heartbeat is stethoscope.
So, the correct answer is 'Stethoscope'.

The stethoscope was discovered by

evs transportation in animal and plants blood transfusion transfusion of blood blood and organ donation

  1. Antonie van Leeuwenhoek

  2. Leopold Auenbrugger

  3. Jean-Nicolas Corvisart

  4. René Laennec

Show answer
Correct Option: D
Explanation:
Rene Laennec was a french physician. He invented the stethoscope in 1816. It is used to listen heart and lungs sound.
So, the correct answer is 'René Laennec'.

Consider the following statements (A - C) each with one or two blanks.
(A)(1) are the most abundant cells (60-65 per cent) of the total WBCs and (2) are the least (0.5-1 per cent) among them.
(B)Platelets are cell fragments produced from (3).
(C)During clot formation, fibrins are formed by the conversion of inactive (4) in the plasma by the enzyme (5).
Which one of the following options, gives the correct fill ups for the respective blank numbers from (1) to (5) in the statements?

evs transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. (l)-Neutrophils, (2)-basophiIs, (4)-fibrinogens, (5)-thrombin

  2. (3)-mast cells, (4)-throm bo kinase, (5)prothrombin

  3. (3)-megakaryocytes, (4) prothrombin, (5)thrombin

  4. (1)-Basophils, (2)-neutrophils, (3)-reticulocytes

Show answer
Correct Option: A
Explanation:

Out of all other leucocytes, the neutrophils (60-65%) are most abundant and the least are basophils (0.5-1%). Platelets are cell fragments produced from megakaryocytes. During the blood clotting, the enzyme thrombin converts inactive fibrinogens into active fibrins.. 

Thus, the correct answer is '(l)-Neutrophils, (2)-basophiIs, (4)-fibrinogens, (5)-thrombin).'

............. in plant cell and ........................ in mannalian cells are non-nucleated in mature stages.

biology transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. Tracheids, osteocytes

  2. Sieve tubes, RBC

  3. Companion cells, RBC

  4. Parenchyma, bone marrow

Show answer
Correct Option: B
Explanation:

The sieve tubes are supporting cells in the conducting tissue of the plant and are characterised by the absence of a nucleus. 

The RBC in the blood does not have a nucleus so as to carry enough oxygen.
So, the correct option is 'Sieve tubes, RBC'.

Platelets have no nucleus and genetic material.

biology transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
Platelets are produced by budding off from a giant multinucleated marrow cell called a megakaryocyte. They are just fragments of larger cells so they do not have the nucleus and genetic material.
So, the correct answer is 'True.

Which of the following cells do not take part in transportation?

biology transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. RBC

  2. WBC

  3. Platelets

  4. Both B and C

Show answer
Correct Option: D
Explanation:

Hemoglobin (Hb or Hgb ) is an iron-containing protein present in Erythrocytes or Red blood cells (RBC) of almost all vertebrates. Each hemoglobin is made up of 4 subunits, 2 alpha subunits, and 2 beta subunits. Each subunit surrounds the central heme group that contains iron and binds to one oxygen molecule. It carries oxygen from lungs to tissues. It also helps in the transportation of carbon dioxide, hydrogen ions back to the lungs from the tissues. Hence RBC helps in transportation of gases while WBC takes parts in immune function and protects the body from infectious diseases and foreign invaders(bacteria, viruses other pathogens) and platelets in blood coagulation.

So, the correct answer is 'Both B and C'.

Which of the following cells gets activated during bleeding?

evs transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. RBC

  2. WBC

  3. Platelets

  4. None of the above

Show answer
Correct Option: C
Explanation:
If one of your blood vessels gets damaged(bleeding), it sends out signals to the platelets. The platelets then rush to the site of damage. they form a plug (clot) to fix the damage. The process of spreading across the surface of a damaged blood vessel to stop bleeding is called adhesion. This is because when platelets get to the site of the injury, they grow sticky tentacles that help them stick (adhere) to one another. They also send out chemical signals to attract more platelets. The additional platelets pile onto the clot in a process called aggregation.

So, the correct answer is 'Platelets'.

Platelets helps in 

evs transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. Transport of gases

  2. Clotting

  3. Fight against disease

  4. None of the above

Show answer
Correct Option: B
Explanation:
When an injury or a trauma occurs platelets are exposed to air this phenomenon stimulates the platelets to start the clotting process. These platelets react with the protein called fibrinogen with the help of vitamin k and calcium. Fibrinogen forms a mesh of tiny threads that collects red blood cells, which plug the open blood vessels as it dries. This is called a clot. Hence platelets help in clotting.
So, the correct answer is 'Clotting'.

Loss of haemoglobin can be controlled by

evs transportation in animal and plants blood in humans circulatory system - blood basics of blood and heart

  1. Platelets

  2. RBC

  3. WBC

  4. None of the above

Show answer
Correct Option: A
Explanation:

Platelets are cell fragments produced from megakaryocytes (special cells in the bone marrow). They are also called as thrombocytes. An injury or a trauma stimulates the platelets in the blood to release certain factors which activate the mechanism of coagulation or blood clotting. They also change their shape from round to spiny and stick to the broken vessel wall and each other and forms net-like structure during bleeding. This prevents the loss of hemoglobin through bleeding.

So, the correct answer is 'Platelets'.

The heart is slightly tilted towards the 

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  1. Right side

  2. Not tilted at all

  3. Left side

  4. Upper side

Show answer
Correct Option: C
Explanation:

The human circulatory system consists of a muscular four-chambered heart, a network of closed branching blood vessels and blood, the fluid which is circulated. The heart is mesodermal in origin. It is situated in the thoracic cavity, in between the two lungs. The heart is slightly tilted towards the left side because the right lung is larger than the left lung. This condition provides the heart with enough space to function properly and pump blood efficiently to different parts of the body.

So, the correct answer is 'Left side'.