Living Environment Ecology

What is a population in ecological terms?

• A population is a group of individuals of the same species living in a specific area.

• A population is a collection of different species in a habitat.

• A population refers to the total number of organisms in an ecosystem.

• A population is a group of individuals that can interbreed and produce fertile offspring.

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What is photosynthesis?

• Photosynthesis is the process by which green plants use sunlight to synthesize foods from carbon dioxide and water.

• Photosynthesis is the process by which animals convert food into energy.

• Photosynthesis is the method by which plants absorb nutrients from the soil.

• Photosynthesis is the way in which plants reproduce sexually.

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What is the lowest layer of a food web?

• Autotrophs

• Herbivores

• Carnivores

• Decomposers

How do ecosystems maintain balance?

• Through interactions among producers, consumers, and decomposers, regulating populations and nutrient cycles.

• By eliminating all predators from the environment.

• By ensuring that only one species dominates the ecosystem.

• Through random changes in climate and weather patterns.

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Why are decomposers important in a food chain?

• They produce energy through photosynthesis.

• They return nutrients to the ecosystem, breaking down dead organic matter.

• They compete with producers for sunlight.

• They are the primary consumers in the food chain.

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What are autotrophs?

• Organisms that consume other organisms for energy.

• Organisms that produce their own food, typically through photosynthesis.

• Organisms that decompose organic material for nutrients.

• Organisms that rely on external sources for energy.

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What is respiration in ecological terms?

• Respiration is the process by which organisms convert glucose and oxygen into energy, releasing carbon dioxide.

• Respiration is the process of photosynthesis in plants.

• Respiration is the exchange of gases between an organism and its environment.

• Respiration is the breakdown of proteins into amino acids.

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What is the difference between transpiration and evaporation?

• Evaporation occurs in plants, while transpiration occurs in water bodies.

• Transpiration is the process of water vapor leaving plants, while evaporation leaves the ground or water.

• Transpiration and evaporation are the same processes occurring in different environments.

• Evaporation is the process of water vapor leaving plants, while transpiration leaves the ground or water.

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What is the function of decomposers in an ecosystem?

• Decomposers break down dead organisms, recycling nutrients back into the soil.

• Decomposers produce energy through photosynthesis.

• Decomposers help in the growth of plants by providing sunlight.

• Decomposers are responsible for the movement of water in the ecosystem.

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Explain the water cycle.

• The water cycle describes the continuous movement of water through evaporation, condensation, and precipitation.

• The water cycle is the process of water being stored in lakes and rivers.

• The water cycle involves the filtration of water through soil layers.

• The water cycle is the process of water being used for irrigation in agriculture.

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