Ecology Study Notes, Questions and Answers

Ecology is a branch of Biology that involves the study of organisms and their environment. Ecology helps explore the relationships between living organisms and their surroundings.
Organisms are affected by their environment, and they in turn affect the environment. Ecology is about how plants, animals, and everything in nature rely on each other and where they live. Just like we need air, water, and food, living things also need specific things to stay alive and grow, like sunlight, soil, and weather. But they also give back by changing their surroundings. In ecology, plants use sunlight to make food which other organisms obtain directly or indirectly.
The study of ecology is important in several fields of study such as agriculture and environmental studies.

Concepts and Terms Used in Ecology

a) Habitat:

A habitat is the place or "home" that an organism lives or is found- e.g., forest, grassland, pond, lake e.t.c.

b) Population:

The term population refers to the total number of individuals of a species living in a given area at a particular time. Population density is a representation of the number of individuals of a population found in a unit area.

c) Community:

This is the term used to describe all the organisms living together in an area.

d) Dispersion:

This is the distribution of individuals in the available space. Dispersion may be uniform as in maize plants in a plantation, random as in cactus plants in the savannah ecosystem or clumped together as in human population in cities.

e) Ecosystem:

An ecosystem is where both living things (like plants and animals) and non-living things (like water, soil, and air) interact. So, everything that's alive and everything that's not alive in a certain area, like a forest or a pond, together create an ecosystem.

Latest in Ecology

Learn the various density dependent factors that affect population growth in an ecosystem.
The graph below represents a population growth curve of zebras in a grassland ecosystem over a period of time. a) Account for the change in zebra population between points R and S on the growth curve above. b) Name the most suitable method used in estimating the zebra population.
Why is it important to use dry mass in ecological studies and not wet mass?
The chart below shows a feeding in a certain ecosystem. a) Construct two food chains ending with a tertiary consumer. b) Which organisms has the highest variety of predators in the food web.
Abiotic factors are the non-living things in an ecosystem that affect living organisms. Examples of abiotic factors include; Sunlight, Temperature ....
Biotic factors represent the living components in an ecosystem, such as plants, animals, fungi, and microorganisms ...

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