Change is Constant -Practice Set # 1

Front

What is a food chain?

Back

A food chain is a sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

Front

Define predator and prey.

Back

A predator is an animal that hunts and eats other animals (prey). Prey are the animals that are hunted and eaten by predators.

Front

What is population dynamics?

Back

Population dynamics is the study of how and why populations change over time, including factors like birth rates, death rates, immigration, and emigration.

Front

Explain the term 'ecosystem'.

Back

An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (air, water, soil) in a specific area.

Front

What does it mean when we say 'change is constant' in ecosystems?

Back

It means that ecosystems are always changing due to various factors like seasonal changes, human activities, and natural events, affecting the populations and interactions of organisms.

Front

What is a producer in an ecosystem?

Back

A producer is an organism, usually a plant, that can make its own food through photosynthesis, forming the base of the food chain.

Front

Describe the role of decomposers in an ecosystem.

Back

Decomposers are organisms, like bacteria and fungi, that break down dead organic material, returning nutrients to the soil and helping to recycle matter in the ecosystem.

Front

What is the significance of seasonal changes in population numbers?

Back

Seasonal changes can affect food availability, breeding patterns, and habitat conditions, leading to fluctuations in population sizes of different species.

Front

Define symbiosis.

Back

Symbiosis is a close and long-term interaction between two different species, which can be beneficial, neutral, or harmful to one or both parties.

Front

What is a carrying capacity?

Back

Carrying capacity is the maximum number of individuals of a particular species that an environment can sustainably support without degrading the habitat.