Why do carnivores, omnivores, and herbivores have different types of teeth?
Each type of animal has specialized teeth that are adapted to the animal's diet or the types of foods they eat.
100
Why is having several air sacs an advantage to birds?
Birds require a lot of energy to fly. Therefore, their cells must receive plenty of oxygen to release the energy contained in food.
100
What is the function of the octopus's two smaller hearts?
The two smaller hearts put blood through each gill, where the blood picks up oxygen.
100
Carnivore
Animals that only eat meat or other animals.
100
Respiratory System
Structures that an animal uses to exchange gases with its surroundings.
200
What is the purpose of digestion?
Digestion breaks food down into small molecules that can be absorbed by cells.
200
What is a mammal that has lungs inside its body?Dolphins!!
Dolphins!! They breathe air.
200
What is the number of hearts an octopus has?
Three
200
Herbivore
Animals that only eat plant material.
200
Diffusion
Process where animals exchange oxygen and carbon dioxide with their surroundings.
300
What is intracellular digestion?
Digestion that takes place within special cells in an animal's body.
300
What are the structures that are found in the respiratory system of most animals that live in water?
gills
300
What is open circulatory system?
Blood does not always travel inside vessels. The heart pumps blood into spaces around the organs. Substances are exchanged, and eventually blood returns to the heart.
300
Omnivore
Eat both plant material, meat, and other animals.
300
Circulatory System
Transports needed materials to cells and takes away wastes.
400
What is extracellular digestion?
Digestion that takes place outside an animal's cells.
400
What is structures that are found in the respiratory system of most animals that live on land?
Lungs
400
Why do animals such as insects have open circulatory systems?
In small animals blood does not have to travel far to get back to the heart, therefore, low pressure is not a problem.
400
Radula
Flexible, tonguelike ribbon of tiny teeth.
i.e. snails
400
Capillaries
Tiny, thin-walled blood vessels where the blood and body cells exchange exchange substances.
500
What is the difference between the digestive system of a very simple animal and a complex animal?
Simple animals have only one opening. Complex animals have two openings.
500
Is concentration of oxygen greater inside or outside the cell?
It is greater outside the cell.
500
Why do most large animals, such as horses, have a closed circulatory system?
In a larger animal, more pressure is needed to push blood back to the heart.
500
Digestion
The process that breaks down food into small molecules.
500
gills
Featherlike structures where gases are exchanged between water and blood.