Podcast
Questions and Answers
What is an ecosystem?
What is an ecosystem?
- A collection of abiotic components in the environment
- An interacting system of biotic and abiotic components where energy flows and nutrient cycles take place (correct)
- A community of plants and animals
- A system of nutrient cycles in a specific environment
In a lake ecosystem, based on light penetration, how many zones is it divided into?
In a lake ecosystem, based on light penetration, how many zones is it divided into?
- Four zones
- Two zones (correct)
- One zone
- Three zones
What are the abiotic components of a lake ecosystem?
What are the abiotic components of a lake ecosystem?
- Plants, animals, microorganisms
- Sunlight, air, water
- Soil, water, air
- Hydrosphere, atmosphere, lithosphere (correct)
Which layer of the tropical rainforest is closest to the ground?
Which layer of the tropical rainforest is closest to the ground?
From where do plants obtain nutrients for synthesizing food through photosynthesis?
From where do plants obtain nutrients for synthesizing food through photosynthesis?
What is the role of phytoplankton in the limnetic zone?
What is the role of phytoplankton in the limnetic zone?
Which zone is characterized by open water below the level of light penetration?
Which zone is characterized by open water below the level of light penetration?
What organisms dominate the benthic zone?
What organisms dominate the benthic zone?
Where do aquatic plants predominantly grow in the lake ecosystem based on light penetration?
Where do aquatic plants predominantly grow in the lake ecosystem based on light penetration?
Which ecosystem exists near the equator in South and Central America, Africa, and Southeast Asia?
Which ecosystem exists near the equator in South and Central America, Africa, and Southeast Asia?
Study Notes
- Ecosystem: interacting system of biotic community and abiotic environment where energy flows and nutrient cycles take place
- Lake ecosystem: stratified aquatic biome, classified by light penetration and distance from shore
- Light penetration: determines division into photic and aphotic/profundal zones
- Photic zone: zone of light penetration for photosynthesis, inhabited by phytoplankton and other organisms
- Aphotic/profundal zone: zone below the level of light penetration, where there is no photosynthesis, dominated by heterotrophs
- Lake ecosystem based on distance from shore: divided into littoral and limnetic zones
- Littoral zone: shallow water close to the shore with plenty of vegetation and inhabitants like insects, crustaceans, and fish
- Limnetic zone: well-lit open water further from the shore, inhabited by phytoplankton, zooplankton, and fish, with phytoplankton serving as the base of the food chain
- Tropical rainforest ecosystem: richest and most diverse terrestrial biome, located in tropical regions with abundant rain, high humidity, and dominated by oxygen-consuming organisms in the benthic zone.
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Description
Test your knowledge on ecosystems and biomes, including lake ecosystems, light penetration zones, and tropical rainforest characteristics.
