8 Questions
Which nutrient is a component of food?
Protein
Which component of food provides energy?
Carbohydrates
Which component of food aids in digestion and helps prevent constipation?
Fiber
What are the two broad categories of life forms based on their trophic levels?
Autotrophs and heterotrophs
From where do autotrophs mainly obtain their energy for chemical reactions?
Mainly from the Sun and largely by photosynthesis
What are mixotrophs?
Autotrophic organisms that partially obtain organic matter from sources other than the atmosphere
What do the linkages in a food web illustrate?
Feeding pathways, such as where heterotrophs obtain organic matter by feeding on autotrophs and other heterotrophs
What does a food web illustrate?
The flow of energy and matter through an ecosystem
Test your knowledge on nutrients, energy sources in food, digestion, trophic levels, and energy acquisition by autotrophs. Learn about the components of food, energy-providing nutrients, and different types of life forms based on their trophic levels.
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