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Carbon dioxide is carried in the blood, mainly as:
NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:
Lungs are separated from abdominal cavity by a muscular sheath called:
NUMS 2018
Biology
Gaseous Exchange
Elimination Tool:
There are ______ stomata per square cm of leaf surface in Tobacco plants.
When abdomen expands, the number of spiracles open is
Lungs are covered with double layered thin membranous sac called
During inspiration, the diaphragm:
PMC Practice 3
Biology
Gaseous Exchange
Elimination Tool:
As pH of blood decreases, H+ ions increases, which combine the proteins part of hemoglobin, to decrease its ability to bind with:
NUMS 2019 Reconduct
Biology
Gaseous Exchange
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Xerophytes have small thick leaves to;
UHS 2019
Biology
Gaseous Exchange
Elimination Tool:
Water is _____ times viscous than air
In most birds air sacs are _____ in number
The function of respiratory passage, Cilia is to keep the airways clear of:
NTS 2019
Biology
Gaseous Exchange
Elimination Tool:
Vocal cords, which help in voice production are two thin edged fibrous bands, present in:
NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:
Which one of the following is a genetic disorder in which abnormally thick mucus is produced in the lungs and other parts of the body?
NUMS 2020
Biology
Gaseous Exchange
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Of the following, which one is better respiratory medium.
Chest cavity is bounded by ribs and muscles on the sides, while the floor of chest cavity is called:
NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:
The gas-exchange portion of the human respiratory system is the:
NTS 2016 SMBBMC
Biology
Gaseous Exchange
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Vocal cords are stretched across
Four plants are present in different environmental conditions. Plant A is present in a warm climate with continuous rainfall, plant B is present in a cool forest, plant C is present in a warm climate with little breeze, while plant D is present in a warm climate with high wind speed. Which one of the above plants will have the highest rate of transpiration?
UHS 2019
Biology
Gaseous Exchange
Elimination Tool:
Nicotine in tobacco:
NUMS 2014
Biology
Gaseous Exchange
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The irritant substances of smoke cause smoker’s cough which weakened and bursts:
NUMS 2019 Reconduct
Biology
Gaseous Exchange
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Oxygen contents per liter of air is
Smaller the animals:
NUMS 2014
Biology
Gaseous Exchange
Elimination Tool:
The number of stomata present per cm2 of leaf is:
PMC Sample 2
Biology
Gaseous Exchange
Elimination Tool:
Which of the following correctly explains the structure of myoglobin:
NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:
The glycolate produced diffuses into the membrane bounded organelles called
During inspiration, the space inside the chest cavity is increased due to:
UHS 2019
Biology
Gaseous Exchange
Elimination Tool:
Chest cavity is bounded by ribs and muscles on the sides, while the floor of chest cavity is called:
NUMS 2019 Reconduct
Biology
Gaseous Exchange
Elimination Tool:
During breathing air from Pharynx enters to:
UHS 2018
Biology
Gaseous Exchange
Elimination Tool:
Thick, waxy & leathery cuticle around leaves is present in which of the following?
PMC Sample 2
Biology
Gaseous Exchange
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Guard cells function as:
NUMS 2019 Cancelled
Biology
Gaseous Exchange
Elimination Tool:
Diaphragm is a sheet of:
NUMS 2019 Cancelled
Biology
Gaseous Exchange
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The respiratory pigment, which has much higher affinity to combine with oxygen is:
NUMS 2016
Biology
Gaseous Exchange
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Active site of Rubisco is evolved to bind
The structural and functional unit of the lungs is:
PMC Practice 2
Biology
Gaseous Exchange
Elimination Tool:
Most oxygen is transported in the blood:
NUMS 2018
Biology
Gaseous Exchange
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Pharynx leads air into _____ through glottis.
NTS 2012
Biology
Gaseous Exchange
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The blood enters the _____ side of heart
Functional units of lungs are called
Parabronchi are open at ______ end/s
Which of the following is not an infection of the lungs/respiratory tract?
NUMS 2015
Biology
Gaseous Exchange
Elimination Tool:
______ respiration is the process by which cell utilized oxygen and produces CO2
Number of spiracles present in the thorax of cockroach is
The passageways of the respiratory system mucous secreting cells called:
NTS 2019
Biology
Gaseous Exchange
Elimination Tool:
As pH of blood decreases, H+ ions increases, which combine the proteins part of hemoglobin, to decrease its ability to bind with:
NUMS 2017
Biology
Gaseous Exchange
Elimination Tool:
Oxygen is transported by combining with ……….. in Hb.
NUMS 2015
Biology
Gaseous Exchange
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Lungs are spongy due to the presence of million of
_________ respiration is directly involved in the production of energy, necessary for all living activities.
Gaseous exchange through the skin is known as ______ respiration.
Number of spiracles present in cockroach is
Oxygen, released into the atmosphere, comes from:
NUMS 2020
Biology
Gaseous Exchange
Elimination Tool:
Which of the following is the respiratory surface in human beings?
PMC Practice 3
Biology
Gaseous Exchange
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The most important cause of many of the respiratory disorders is:
NUMS 2019 Cancelled
Biology
Gaseous Exchange
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The air spaces may comprise upto ______ of total volume of leaf surface.
Booklungs serve the function of respiration in:
NTS 2014
Biology
Gaseous Exchange
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The maximum amount of oxygen which normal human blood absorbs and carries at sea level is how many ml per 100 ml of blood?
PMC Sample 2
Biology
Gaseous Exchange
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The oxygen-binding protein present in skeletal muscles is:
NUMS 2017
Biology
Gaseous Exchange
Elimination Tool:
The infection of lungs is called:
PMC Practice 1
Biology
Gaseous Exchange
Elimination Tool:
Haemoglobin carries more oxygen than plasma by:
NTS 2011
Biology
Gaseous Exchange
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The voice box leads to the trachea which is also called
PMC Practice 1
Biology
Gaseous Exchange
Elimination Tool:
Hemoglobin can absorb maximum oxygen at sea level, which is _____ ml/100 ml of blood.
NUMS 2019 Cancelled
Biology
Gaseous Exchange
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Gaseous exchange in plants takes place through the:
NUMS 2020
Biology
Gaseous Exchange
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Breathing is considered as a:
PMC Practice 1
Biology
Gaseous Exchange
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In which of the following are book lungs found?
NUMS 2014
Biology
Gaseous Exchange
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A disease caused by gradual breakdown of the thin walls of alveoli is;
UHS 2019
Biology
Gaseous Exchange
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