Ecology Concept Check Use the word bank to match the definition with the term. (#1-8)

Ecosystem Organism Biome Biosphere Abiotic Biotic Community Population

1. Living part of the environment

2. Collection of abiotic and biotic factors in an environment

3. A single living thing that can breed/produce fertile offspring

4. Ecosystem with same climate and similar communities

5. Individuals of the same species that live in the same area

6. Earth with all the ecosystems

7. Different interacting populations that live together in an area

8. Nonliving part of the environment

9. Arrange these levels of organization in order from 1 to 4 starting with the simplest.

Organism Community Ecosystem Population

I

10. Identify the level of organization.

D) Focus

1. Biotic

2. Ecosystem

3. Organism

4. Biome

5. Population

6. Biosphere

7. Community

8. Abiotic

9. 1) organism 2) population 3) community 4) ecosystem

Explanation:

Ecosystem Organism Biome Biosphere Abiotic Biotic Community Population

1. The living part of an environment is called its BIOTIC FACTOR. It comprises of plants, animals and microbes in the environment.

2. The collection of abiotic and biotic factors in an environment is referred to as an ECOSYSTEM. The ecosystem is the interaction of the biotic components with the abiotic components of the environment.

3. An ORGANISM is a single living thing that can breed/produce fertile offspring

4. A BIOME consists of an ecosystem with same climate and similar communities.

5. POLULATION in biology refers to individuals of the same species that live in the same area or habitat.

6. The BIOSPHERE refers to the earth with all the ecosystems in it.

7. A COMMUNITY is a group of different interacting populations that live together in an area.

8. ABIOTIC FACTORS are the nonliving part of the environment, consisting of land, soil, water etc

9. The levels of organization in order from 1 to 4 starting with the simplest is as follows:

1) Organism

2) Population

3) Community

4) Ecosystem

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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a symbiotic relationship with the mitochondria