Comparing Nutrient and Gas Requirements Flashcards
How is oxygen taken in by autotrophs?
It diffuses into plants across cell surfaces.
How is oxygen taken in by heterotrophs?
It diffuses across the respiratory surface.
Which organisms require carbon dioxide?
Autotrophs require carbon dioxide for photosynthesis. It diffuses into the plant.
How is water taken in by autotrophs?
Absorbed in roots.
How is water taken in by heterotrophs?
It is ingested by the digestive system.
How is glucose obtained by autotrophs?
It is produced by photosynthesis
How is glucose obtained by heterotrophs?
It is ingested as simple or complex carbohydrates and absorbed into blood.
How are proteins and lipids obtained by autotrophs?
Produced by the plant from glucose and mineral ions.
How are proteins and lipids obtained by heterotrophs?
Ingested into digestive system and absorbed into blood as amino acids, fatty acids.
How are mineral ions obtained by autotrophs?
Absorbed in roots by diffusion and active transport.
How are mineral ions obtained by heterotrophs?
ingested into digestive system and absorbed into blood.
What is autotrophic nutrition?
Plants produce organic nutrients themselves from the inorganic materials they take in.
What is heterotrophic nutrition?
Obtaining organic nutrients by feeding on other living things.
