Biology
The figure given below represents a certain organ of the human chest cavity. Study the same and answer the following questions.
(a) Identify the organ and the organ system.
(b) Label the guidelines 1 to 6.
(c) What are the two advantages of C-shaped cartilaginous rings found in structure 1 ?
(d) Name the fluid filled between the two protective layers of the organ shown as part 2.
(e) Name the basic structural and functional unit of part 2.
Answer
(a) The given figure shows respiratory system and lungs.
(b) Labelled guidelines 1 to 6 are :
- 1 → Trachea
- 2 → Left lung
- 3 → Bronchus
- 4 → Rib cage
- 5 → Pleural fluid
- 6 → Diaphragm
(c) Two advantages of C-shaped cartilaginous rings of trachea are:
- Provide strength to trachea.
- Provide flexibility and keep the trachea distended permanently.
(d) Pleural fluid
(e) Alveoli
Related Questions
Given below are chemical reactions (1 to 5) involving glucose and five other chemical products (A-E).
(a) Write the reaction number of the following:
(i) Anaerobic respiration in plants ……..
(ii) End-products in aerobic respiration ……..
(iii) Reaction occurring in liver ……..
(iv) Anaerobic respiration in animals ……..
(v) Storage in the liver ……..
(b) Which reactions (1-5) in the above correspond to the following (write the corresponding number of reaction next to them).
(i) Aerobic respiration
(ii) Change taking place in the liver
(iii) Anaerobic respiration in yeast
(iv) Change taking place in a plant storage organ – e.g. potato.
(v) Anaerobic respiration in animals
Given below is an overall chemical reaction of a certain process:
C6H12O6 → lactic acid + 2ATP + heat energy
(a) Name the process.
(b) Is this reaction applicable to animals or to plants or to both animals and plants?
(c) Name one tissue in which this reaction may occur.
The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured.
The following diagram shows a group of the lung volumes and capacities:
Study the diagram carefully and explain briefly the following:
- Tidal volume
- Inspiratory reserve volume
- Expiratory reserve volume
- Vital capacity
- Residual volume
The figure given alongside shows an experimental set up to demonstrate a process. Answer the following questions.
(a) Name the process depicted.
(b) What are the two steps of the above mentioned process?
(c) What do the following parts in the diagram represent ?
- Balloons
- Rubber sheet
- Bell jar
(d) Write the exact location of the organ represented by the balloons in the human body.