Question

Give the name of respiratory organs of fish, earthworm, grasshopper insect and human(man).

Answer 1

Fish being aquatic animals have respiratory organs near fins. Earthworms do not have specialized organs. Grasshoppers respire with the help of tubular networks. Humans have well defined organs for respiration which are in pairs.

Complete step by step answer:
Respiratory organs of fish: Through gills
Respiratory organs of earthworm: Through moist skin
Respiratory organs of grasshopper: Through spiracles
Respiratory organs of human (man): Through lungs

Additional Information:
Respiratory organs of fish: Through gills
- The ability to get oxygen from the external environment by means of vascularized gills, lungs, or skin to move this oxygen to the tissues and to unload the oxygen to the tissues.
- In an equivalent manner carbon dioxide is transported within the blood and eliminated at the gills or other respiratory structures.
- In some scaleless fishes, gas exchanges happen with skin.
- In embryos of fishes various tissues function as temporary breathing structures like yolk sac.
- After hatching, the developing pectoral fins may assist the developing gills.
Respiratory organs of earthworm: Through moist skin
- There is not any formalized systema respiratorium in earthworms therefore exchange of oxygen and carbon dioxide takes place through the moist cuticle.
- Respiration normally occurs in air but earthworms can exist in water for long periods of your time (e.g. for 6 months) if the water is oxygenated.
Respiratory organs of grasshopper: Through spiracles
- The gaseous exchange occurs by means of a system of branched tubules or tracheae within the tracheal system air usually enters through small openings arranged laterally called spiracles.
- Spiracles have a chamber or atrium with a gap and shutting mechanism called atrial valve.
- This regulates the air duct and minimises water loss.
- Each spiracle is about during a sclerotized cuticular plate called a peritreme.
- The ringed appearance of the tracheae is thanks to the spiral ridges called taenidia. This enables the tracheae to be flexible but resist compression.
- Tracheoles are but 1 μm in diameter and that they end blindly and closely contact the respiring tissues.
- In the trachea, thin walled- collapsible saclike dilations are present, called as air sacs where taenidia is absent.
Respiratory organs of human (man): Through lungs
- Human respiratory systemIt is chiefly divided into two components: tract and internal organs .
- Respiratory Tract is the passage which allows movement of inspired and expired air in and out of the lungs.
- Respiratory tract consists of
1. Nostrils
2. Nasal chambers
3. Internal nares
4. Pharynx
5. Larynx
6. Trachea

Note:
- The human systema respiratorium allows one to get oxygen, eliminate carbon dioxide.
Inspiration- the method of taking in air
Expiration- the method of blowing out air.
- Respiration Includes:
Pulmonary ventilation – Air moves in and out of lungs where continuous replacement of gases in alveoli or air sacs.
External respiration – Gas exchange between blood and air at alveoli during which oxygen in air diffuses into blood and carbon dioxide in blood diffuses into air.