Podcast
Questions and Answers
How do insects primarily breathe?
How do insects primarily breathe?
- Through lungs
- By swallowing air
- Through tracheae and spiracles (correct)
- By diffusion through the skin
Fish breathe by extracting oxygen from water using their gills.
Fish breathe by extracting oxygen from water using their gills.
True (A)
What is the method of respiration used by earthworms?
What is the method of respiration used by earthworms?
through their thin and moist skin
Frogs breathe through _____ when they are on land and through their moist skin when in water.
Frogs breathe through _____ when they are on land and through their moist skin when in water.
Match the animals with their respiratory organs:
Match the animals with their respiratory organs:
Flashcards
Amoeba Respiration
Amoeba Respiration
Gases exchanged by diffusion through the cell membrane.
Insect Respiration
Insect Respiration
Insects use a network of tracheae (air tubes) and spiracles for gas exchange.
Fish Respiration
Fish Respiration
Fish use gills, with blood vessels, to extract oxygen from water.
Earthworm Respiration
Earthworm Respiration
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Frog Respiration
Frog Respiration
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Study Notes
Respiration in Unicellular Organisms
- Unicellular organisms like Amoeba and Paramecium exchange gases through diffusion across their cell membranes.
Respiration in Insects
- Insects like grasshoppers and cockroaches have a network of air tubes called tracheae.
- Tracheae have tiny openings called spiracles on their bodies.
- Oxygen-rich air enters through spiracles.
- Air travels through tracheae to body tissues, providing oxygen to cells.
- Cells break down food for energy, producing carbon dioxide.
- Carbon dioxide travels back through tracheae and exits through spiracles.
Respiration in Fish
- Fish breathe using gills located on their head.
- Water is taken in through the mouth and passed over the gills.
- Gills contain blood vessels that extract dissolved oxygen from water.
- Oxygen is carried by blood to all body parts.
- Carbon dioxide is carried back to gills for release into the surrounding water.
Respiration in Earthworms
- Earthworms breathe through their thin, moist skin.
Respiration in Frogs
- Frogs breathe using lungs on land, similar to humans.
- Frogs breathe through their moist skin underwater.
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