24/25 Energy Flow in the Ecosystem/ Biotic Abiotic flashcards

Front

Living parts of an ecosystem

Back

Biotic

Answer explanation

The living parts of an ecosystem are referred to as biotic factors. These include all organisms such as plants, animals, and microorganisms that interact within the environment.

Tags

NGSS.MS-LS2-3

Front

Nonliving parts of an ecosystem

Back

Abiotic

Answer explanation

The nonliving parts of an ecosystem are called abiotic factors. These include elements like water, sunlight, soil, and air, which are essential for the survival of living organisms within the ecosystem.

Tags

NGSS.MS-LS2-3

Front

Main difference between biotic and abiotic factors?

Back

Biotic factors are living; abiotic factors are non-living.

Answer explanation

The correct choice states that biotic factors are living things, such as plants and animals, while abiotic factors are non-living elements like water and soil. This distinction is fundamental in understanding ecosystems.

Front

Abiotic factor in a desert ecosystem?

Back

Sand

Answer explanation

In a desert ecosystem, abiotic factors are non-living components. Sand is an abiotic factor, while cactus, scorpion, and bird are all biotic factors, as they are living organisms.

Tags

NGSS.MS-LS2-3

Front

Trophic level of a Producer

Back

Bottom (1st)

Answer explanation

Producers, such as plants, occupy the bottom (1st) trophic level of the energy pyramid. They convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

Less energy is available for higher animals in the food chain because:

Back

All of the above.

Answer explanation

Energy decreases at higher trophic levels due to energy waste, incomplete digestion, and the high energy demands for survival. Therefore, all these factors contribute to less energy being available for animals higher up in the food chain.

Tags

NGSS.MS-LS2-3

Front

Energy flow in an energy pyramid

Back

Up

Answer explanation

Energy flows up the energy pyramid, starting from producers at the base and moving to higher trophic levels like herbivores and carnivores. This upward flow represents the transfer of energy through the ecosystem.

Tags

NGSS.MS-LS2-3

Front

10% rule: energy transfer to next Trophic Level

Back

10%

Answer explanation

According to the 10% rule, only 10% of the energy from one trophic level is transferred to the next. This means that when energy moves up the food chain, a significant amount is lost, leaving just 10% for the next level.

Tags

NGSS.MS-LS2-3

Front

Trophic level categorization

Back

Based on what organisms eat

Answer explanation

A trophic level is categorized based on what organisms eat, which determines their role in the food chain. This classification helps in understanding energy flow and ecological relationships.

Tags

NGSS.MS-LS2-3

Front

Fewer organisms at the top of the food pyramid because:

Back

Less energy is available to them.

Answer explanation

Fewer organisms are found at the top of the food pyramid because less energy is available to them. Energy decreases at each trophic level, limiting the number of organisms that can be supported higher up.

Tags

NGSS.MS-LS2-1