Food Webs and Food Chains Quizs

What is a producer in an ecosystem?

• An organism that can make its own food, typically through photosynthesis, such as plants like tall grass.

• An organism that consumes other organisms for energy, such as animals.

• A type of fungus that decomposes organic material.

• A microorganism that lives in extreme environments and produces energy through chemosynthesis.

What do the arrows in a food web represent?

• The arrows indicate the direction of energy flow, pointing from the organism that provides energy to the organism that receives it.

• The arrows represent the number of organisms in the food web.

• The arrows show the size of the organisms in the food web.

• The arrows indicate the geographical location of the organisms.

What is the role of sunlight in a food web?

• Sunlight is the primary energy source for producers, enabling them to perform photosynthesis and create energy-rich organic compounds.

• Sunlight is used by consumers to digest food and obtain energy.

• Sunlight helps decomposers break down organic matter into nutrients.

• Sunlight is a secondary energy source that supports herbivores in the food web.

Define a carnivore.

• A carnivore is an organism that primarily eats plants.

• A carnivore is an organism that primarily eats other animals.

• A carnivore is an organism that can eat both plants and animals.

• A carnivore is an organism that lives in water.

What is a trophic level?

• A position in a food chain or food web, defined by how an organism obtains its energy.

• A measure of the energy efficiency of an ecosystem.

• The total biomass of all organisms in a given area.

• The rate at which producers convert solar energy into chemical energy.

Explain the concept of energy loss in a food chain.

• Energy loss in a food chain is negligible and does not affect the ecosystem.

• Energy loss in a food chain occurs at each trophic level due to metabolic processes, heat loss, and inefficiencies in energy transfer, typically around 90% is lost.

• Energy loss in a food chain is primarily due to the consumption of non-edible parts of organisms.

• Energy loss in a food chain is only significant at the producer level.

What role do herbivores play in a food chain?

• Herbivores are primary consumers that eat producers (plants) and transfer energy from the producers to higher trophic levels.

• Herbivores are secondary consumers that eat other animals and help control their populations.

• Herbivores are decomposers that break down dead organic matter and recycle nutrients back into the soil.

• Herbivores are producers that create energy through photosynthesis.

What is the difference between a food chain and a food web?

• A food chain is a linear sequence of organisms where each is eaten by the next, while a food web is a more complex network of multiple food chains interconnected.

• A food chain includes only plants, while a food web includes both plants and animals.

• A food chain represents the energy flow in a single ecosystem, whereas a food web represents energy flow across multiple ecosystems.

• A food chain is a diagram that shows the population of species, while a food web shows the geographical distribution of species.

Give an example of a primary consumer.

• Rabbit

• Lion

• Eagle

• Shark

List the correct order of a simple food chain.

• grass (producer) → snail (herbivore) → bird (carnivore) → cat (top predator)

• cat (top predator) → bird (carnivore) → snail (herbivore) → grass (producer)

• bird (carnivore) → grass (producer) → cat (top predator) → snail (herbivore)

• snail (herbivore) → cat (top predator) → grass (producer) → bird (carnivore)