Survival Basics
This term describes the relationship where one animal hunts and eats another animal for food.
What is predation?
To avoid predation, this marsupial has a behavioral trait of falling over and playing dead.
What is an opossum?
Actions taken by an animal specifically to attract a mate, such as a firefly flashing its light.
What is courtship behavior?
This is the most basic, fundamental unit of life in all organisms.
What is a cell?
An organism made up of only one cell, such as a bacterium or amoeba.
What is a single-celled (or unicellular) organism?
Food, water, shelter, and space/air are the four basic things all organisms need from this.
What is their environment?
When threatened, this marine animal swallows water to inflate its body and stick out sharp spines.
What is a pufferfish?
Male birds of this species show off for females by building and decorating elaborate structures on the ground.
What are bowerbirds?
This is formed when a group of similar cells work together to perform a specific function.
What is a tissue?
The major difference between a prokaryotic cell and a eukaryotic cell is that eukaryotes have this structure containing their DNA.
What is a nucleus?
A structural feature on an organism's body, like sharp claws or thick fur, that helps it survive.
What is a physical trait?
This desert reptile uses a bizarre behavioral defense mechanism: it shoots blood out of its eyes to scare predators.
What is the regal horned lizard?
To protect their vulnerable young from predators and increase survival probability, these animals form a defensive circle around their calves.
What are musk oxen?
The heart, lungs, and stomach are examples of this level of organization, which is made of different tissues working together.
What is an organ?
Unlike animal or plant cells, bacterial cells lack a nucleus, meaning they belong to this group.
What are prokaryotic cells?
An action or reaction an organism does to survive, such as migrating or hiding.
What is a behavioral trait?
This animal protects its soft belly by rolling into a tight circle and biting its own tail, exposing only its hard, spiky scales.
What is an armadillo lizard?
Female sea turtles use this strategy to increase the probability that at least some of their offspring will survive to adulthood.
What is laying a large number of eggs (and burying them in the sand)?
Between a cell and an organ, this one is considered structurally more complex.
What is an organ?
One of the three main parts of cell theory states that all new cells must come from these.
What are pre-existing cells?
A specific group of similar organisms that can mate with each other and produce fertile offspring.
What is a species?
The process by which a seed begins to grow and develop into a new plant.
What is germination?
A peacock uses this extravagant physical reproductive trait to stand out as a better potential mate to a peahen.
What are its large, colorful tail feathers?
This is the correct order of the levels of organization, starting from the least complex and ending with the most complex.
What is Cell → Tissue → Organ → Organ System → Organism?
They have genetic material but are not considered living cells because they require a host to reproduce and do not fulfill the parts of cell theory.
What are viruses?