Energy Flow in Ecosystem

The video explains energy's role in ecosystems, focusing on solar energy and its conversion through photosynthesis. It covers the unidirectional flow of energy, governed by thermodynamics laws, and the inefficiency of energy transformations. The video describes food chains, trophic levels, and the interconnectedness of food webs. It distinguishes between grazing and detritus food chains, highlighting their roles in different ecosystems. The concept of standing crop and the 10% law of energy transfer across trophic levels are also discussed.

What is the primary source of energy for ecosystems?

• Geothermal energy

• Wind energy

• Nuclear energy

• Solar energy

What does the first law of thermodynamics state about energy?

• Energy is infinite

• Energy is always lost as heat

• Energy can only change forms

• Energy can be created and destroyed

Which organisms are known as primary consumers in a food chain?

• Decomposers

• Carnivores

• Herbivores

• Producers

What is a food web?

• A single food chain

• A group of producers

• A network of interconnected food chains

• A type of ecosystem

What is the main difference between a grazing food chain and a detritus food chain?

• Grazing food chains start with dead matter

• Grazing food chains begin with producers

• Detritus food chains rely on solar energy

• Detritus food chains involve herbivores

What is the 10% law in energy transfer?

• 10% of energy is transferred to the next level

• 10% of energy is lost at each trophic level

• 10% of energy is stored as biomass

• 10% of energy is used for growth

In which type of ecosystem does the detritus food chain play a larger role?

• Terrestrial ecosystems

• Mountain ecosystems

• Aquatic ecosystems

• Desert ecosystems