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Chapter 4 - The Organization of Life

Name: ____________________
Across
Change in the genetic characteristics of a population from one generation to the next
An individual living thing
An inherited trait that increases an organism's chance of survival and reproduction in a certain environment
Animals that lack backbones
Group of organisms that are closely related and that can mate to produce fertile offspring
Unequal survival and reproduction that results from the presence or absence of particular traits
The process of two species evolving in response to long-term interactions with each other
All the members of the same species that live in the same place at the same time
Plant-like protists that can make their own food using the sun's energy
Single-celled and many-celled organisms that may be plant-like, animal-like, or fungus-like
A group of various species that live in the same place and interact with each other
Down
Animals that have backbones
Woody plants whose seeds are not enclosed in fruits
Living or once living part of an ecosystem
Nonliving part of an ecosystem
All the organisms living in an area and their physical environment
Ability of one or more organisms to tolerate a particular chemical designed to kill it
Flowering plants that produce seeds in fruit
The place where an organism lives
Organisms whose cells have nuclei and cell walls, but no chlorophyll
Microscopic , single-celled organisms that usually have cell walls, reproduce by dividing in half, and lack nuclei
Many-celled organisms that have cell walls and make their own food using the sun's energy