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Criado por Sam Gunnell
mais de 5 anos atrás
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Questão | Responda |
What three problems with gaseous exchange do insects face? | Insects are very active so need lots of oxygen They have a tough exoskeleton so no gaseous exchange can occur There are no oxygen carrying blood pigments |
What are spiracles? | Small openings along the thorax and abdomen |
How does air enter and leave insects? | Through the spiracles |
How does air travel around the insect? | Trachea lead away from the spiracles and these trachea divide into tracheoles. |
Why does air have to be transported around the insects rather than in blood? | Insects don't have oxygen carrying pigments in the blood like humans do |
How do collapsible air sacs increase the uptake of oxygen? | They act as air reservoirs, increasing the volume of air moving through the xchange system. They usually inflate and deflate bt movements of the abdomen |
Where does gaseous exchange take place in insects? | Tracheoles |
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