C-07 — Exchange of Gases

Through which two physiological processes do plants mainly exchange gases?

Which gas does a plant absorb from air during photosynthesis?

Which gas is released by plants during photosynthesis?

Which gas does a plant take in during respiration?

Which gas is released by plants during respiration?

Through which structure does gas exchange take place in the leaves of a plant?

On the bark of a mature stem, gas exchange occurs through —

Which phase of photosynthesis ceases at night?

Which process continues round the clock in a plant?

Why may breathing problems develop if someone sleeps under a big tree at night?

The $O_2$ released by a plant is produced by the reaction between —

Through which structure does the root of a plant absorb water from the soil?

Consider the following structures of a plant:

Why are the amounts of gases exchanged by a plant approximately equal in daylight?

Death is inevitable if the supply of oxygen stops for —

Inhaling of oxygen is called —

Breathing out of carbon dioxide is called —

Which substance is oxidized by oxygen inside the body cells to produce energy?

Which equation correctly represents respiration?

Which one is the energy currency produced in respiration?

Through respiration, potential energy of food is converted into —

The heat produced from respiration mainly serves to —

How many organs are mainly related to the human respiratory system?

Which of the following is the beginner of the respiratory system?

The nasal cavity is situated —

The shape of the nasal cavity is —

The sense of smell is associated with —

The front side of the nasal passage is covered with —

The rear part of the nasal passage is lined by —

What is the main function of cilia and mucous in the nasal passage?

The inhaled air, after passing through the nasal passage, becomes —

The pharynx extends from the nasal passage to —

Which structure closes the back of the nasal cavity during swallowing?

Besides closing the back of the nasal cavity, which is another important function of the soft palate?

Vocal cords are situated in —

The vocal cords are —

The epiglottis is situated at —

What does the epiglottis do during the intake of food?

What is the role of the epiglottis during respiration?

The larynx is situated —

The trachea is supported by —

The inner layer of the trachea is covered with —

The trachea lies in front of —

Trapped dust and germs in the trachea are expelled by —

The lower end of the trachea is divided into —

The repeated subdivisions of the bronchi form —

The right and left lungs are situated —

The colour of the human lung is —

How many lobes does the right lung have?

How many lobes does the left lung have?

The double-layered membrane covering the lungs is called —

The fluid present between the two layers of the pleura mainly —

The air sacs of the lungs are called —

The wall of each alveolus is composed of —

The alveoli are surrounded by —

The smaller bronchioles (alveolar ducts) terminate in —

The diaphragm is —

The diaphragm separates —

The shape of the diaphragm is like —

When the diaphragm contracts —

When the diaphragm expands —

All the organs related to breathing remain open only through —

During inhalation, the intercostal muscles and the diaphragm —

During inhalation, the volume of the thoracic cavity —

During inhalation, the air pressure inside the thoracic cavity becomes —

During exhalation, the diaphragm and intercostal muscles —

The whole process of inhaling and exhaling is called —

Gaseous exchange in the lungs takes place through —

Diffusion of gases between alveoli and blood occurs because of —

Most of the oxygen in the blood is carried as —

Oxyhaemoglobin is —

Oxygen forms a loose bond with which part of haemoglobin?

A small amount of oxygen is transported in the blood through —

After entering the blood capillaries, oxygen reaches the body cell finally through —

Carbon dioxide of the body cells is mainly produced by —

From the cell, $CO_2$ first diffuses into —

$CO_2$ is mainly transported in the blood as —

In which form is $CO_2$ transported by the blood plasma?

In which form is $CO_2$ transported by red blood cells?

In the lungs, $CO_2$ released from bicarbonate is finally passed to —

Consider the following events of inhalation:

Which of the following solutions is used in the experiment to detect the nature of exhaled air?

In the experiment, when exhaled air is passed through the limewater, it turns —

The milky colour of the limewater indicates the presence of —

When normal air is passed through limewater using the syringe, the limewater —

The experiment proves that exhaled air contains more —

Asthma usually occurs because of —

Which of the following statements about asthma is correct?

Which of the following allergic foods may cause asthma?

Which is a common symptom of asthma?

What kind of sound is heard in the chest of an asthma patient?

Usually fever in an asthma patient —

During the respiration of an asthma patient, the skin between two ribs —

In infants, common cold may cause symptoms similar to —

Which type of treatment by quacks for asthma causes long-lasting negative consequences?

Bronchitis is caused by —

Bronchitis means inflammation of —

If sputum continues with cough for three months and the disease attacks for two consecutive years, it is called —

Which is a main cause of bronchitis?

Pneumonia is caused mainly by —

Pneumonia may also occur when which substances enter the trachea?

Pneumonia is particularly dangerous for —

Which of the following is a symptom of pneumonia?

Tuberculosis is caused by —

Tuberculosis is a —

Tuberculosis can affect —

Which test is NOT used to diagnose tuberculosis?

Which vaccine is given against tuberculosis?

The BCG vaccine should be given to a baby within —

Which symptom is characteristic of tuberculosis?

Which of the following statements about BCG vaccination is correct?

Which is considered the main cause of lung cancer?

In Bangladesh, lung cancer is the leading cause of cancer death in —

Which of the following pollutants may cause lung cancer at workplaces?

Which therapy is used to destroy cancer cells by radiation?

For the final confirmation of lung cancer, which test is performed?

Which of the following is a primary symptom of lung cancer?

Consider the following statements about asthma:

Which of the following causes bronchitis?

Which one helps in the exchange of gases in plants—

Ahona is experiencing coughing and difficulty in breathing, accompanied by a wheezing sound in her chest. What disease is Ahona suffering from?

Niloy is having trouble breathing, with noticeable retraction of the skin between his ribs during inhalation. Applicable in case of Niloy's disease—

Which of the following indicates pneumonia in a child?

Why is it not advisable to sleep under a big tree at night?

What is the main difference between trachea and bronchus?

Which best describes the role of the diaphragm in respiration?

Why does food usually not enter the windpipe (trachea) while eating?

The trachea is best described as —

After entering the lungs through the nostrils, the air is mainly purified by —

Why is each alveolus surrounded by a network of capillaries?

In Rashed's case, the cells in his respiratory organs are dividing uncontrollably. He is most likely suffering from —

Jamil's disease has spread from his respiratory organs to his intestine and bones. Which disease does Jamil most likely have?

Between the diseases of Rashed (lung cancer) and Jamil (tuberculosis), which is relatively easier to cure?

Photosynthesis and respiration in plants are interdependent because —