8 Questions
What is the ultimate source of energy for life on earth?
Sunlight
What type of organisms are green plants?
Autotrophic
How do green plants transform energy from the sun?
By capturing sunlight with chlorophyll molecules
Which type of animals mainly feed on decaying organic matter?
Saprophagous animals
What happens to food reduced by digestion to simpler, soluble, molecular forms?
It is absorbed and transported to the body’s tissues
How do most suspension feeders draw drifting food particles into their mouths?
Using ciliated surfaces to produce currents
What must be done with the wastes produced by oxidation?
They must be excreted
What happens to food products that remain undigested and are not absorbed?
They are egested in feces
Study Notes
Energy for Life on Earth
- The ultimate source of energy for life on earth is the sun.
Characteristics of Green Plants
- Green plants are autotrophic organisms, meaning they produce their own food.
Energy Transformation
- Green plants transform energy from the sun into chemical energy through a process called photosynthesis.
Decomposers
- Detritivores, a type of animal, mainly feed on decaying organic matter.
Digestion
- Food reduced by digestion to simpler, soluble, molecular forms is absorbed into the bloodstream.
Suspension Feeders
- Most suspension feeders draw drifting food particles into their mouths using cilia or flagella.
Waste Management
- Wastes produced by oxidation must be excreted or removed from the body.
Undigested Food Products
- Food products that remain undigested and are not absorbed are eliminated from the body through the excretory system.
Test your knowledge of photosynthesis and the role of sunlight in providing energy for life on Earth with this quiz. Explore the process of energy transformation in green plants and the essential role of chlorophyll in capturing sunlight.
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