Ecology Introduction

Ecology is-

• the branch of biology that deals with the normal functions of living organisms and their parts.

• the study of the development, structure, and functioning of human society

• the branch of biology and medicine concerned with the study of embryos and their development.

• the study of relationships among organisms and their environment

Ecosystems include biotic (living) AND abiotic (non-living) organisms.

• True

• False

Community includes both biotic (living) AND abiotic (non-living) organisms.

• True

• False

Why are decomposers important?

• they kill bad bacteria in your intestines

• they create diversity within archaebacteria

• they eat decaying material and recycle the nutrients

• they are the junk drawer

Microorganisms-

• Small organisms like bacteria, protists and fungi

• Large organisms like populations, communities, and ecosystems

Bacteria can hurt or help you.

• True

• False

Ecological succession-

• study of relationships among organisms and their environment.

• change in the species structure in the community over time.

• bad organisms that make things sick

• interactions between organisms in which both require a limited resource.

Primary succession starts with-

• trees

• flowers

• bare rock

• animals

The first plants that start to grow in an area are called-

• climax community

• pioneer community

• pointer community

• primary community

Choose the two organisms that usually represent the pioneer species in an environment.

• moss

• roses

• lichen

• trees