# Habitat

The place where an organism lives.

Biology (school) · Part 07: Ecosystems and food chains · Card 2 of 11 · Last updated 2026-10-19

## Analogy

The address of a living thing.

## In practice

The habitat of a frog may be a pond edge.

## Practice

### Flashcards

- **What is a habitat?** The place where an organism lives.

## Questions people ask

### What is a microhabitat?

A microhabitat is a small area within a larger habitat with its own conditions. Under a log in a wood is damper and darker than the woodland floor, so woodlice and worms live there. Different microhabitats support different organisms in one place.

### How do scientists estimate population size?

They sample the area with a quadrat, a square frame, in several random places. They count the organisms inside each, find the mean, then multiply by how many times the quadrat fits into the whole area. Random sampling avoids bias. Moving animals can be caught and marked instead.

## Related concepts

- [Ecosystem](https://studyvisually.com/learn/science/biology-school/biology-school-part-7/biology-school-part-7-concept-1)
- [Biotic and abiotic factors](https://studyvisually.com/learn/science/biology-school/biology-school-part-7/biology-school-part-7-concept-3)
- [Competition](https://studyvisually.com/learn/science/biology-school/biology-school-part-7/biology-school-part-7-concept-4)

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