1. Animal Variations and Behaviors
Ensuring Survival

2. Ensuring Survival
As you watch this presentation, make a list of how the variations, adaptations, or behaviors enhance the survival of animals.
Include:
camouflage
structure and function
mouthparts
appendages
migration
hibernation

3. Variations Variation is: Variation is necessary:
The difference between individuals of the same species
The process or act of changing
Variation is necessary:
If all of the animals in a species were exactly the same, they could all be taken out by disease or disaster.

4. Structure and Function
Comparing structure and function of parts and behaviors help us understand why variation is necessary.
Structure is the form of an organism’s parts.
Example: A pedal is structured like a
landing strip for insects.
Function is what that part does.
Example: The function of a petal is
to attract insects.

5. Camouflage
Camouflage is a method of hiding that allows an otherwise visible animal to remain unnoticed by blending with its environment.
Can you find the Northern Leopard Frog?

6. Find the Butterfly Wing Leg

7. Find the Flounder
Head

8. Find the Grasshopper Thorax (Chest)

9. Find the Frog
Head

10. The mouthparts of animals must adapt to a specific style of feeding.
Mouth Structures
The mouthparts of animals must adapt to a specific style of feeding.

11. Mouth Structures
Insects and crustaceans: cutting and chewing, piercing and sucking, siphoning and filtering
Scavenger feeder:
- Notice that the appendages
help get food into the mouth.

12. Caterpillar Mouth Structures
Used for cutting leaves and other vegetation.
Notice that the appendages help get food into the
mouth.

13. Carnivore Mouth Structures
Sharp teeth to tear flesh

14. Herbivore Mouth Structures
Herbivores have flat teeth.
In cattle, the tongue is used to grasp food and pinch it off.

15. Omnivore Mouth Structures
Two types of teeth:
sharp and flat

16. Bird Mouth Structures Bird beaks are shaped to fit their food:
Tearing flesh, cracking hard nuts or seeds, prying open, filtering, etc.

17. Appendages
An appendage is an external body part that sticks out from an organism's body or body segment.
Examples for invertebrates and vertebrates include: limbs, antennae, mouthparts, wings, wing covers, gills, walking legs, swimming legs , and parts of the tail. Typically, each body segment carries one pair of appendages.

18. Leafy Sea Dragon Appendages for hiding

19. Appendages Tail appendage Mouth appendages Antenna Swimming appendages
Walking appendages

20. Migration Migration is a cyclic behavior that involves:
the regular, seasonal, or annual journey of an animal from one place to another and back again
Found in all major animal groups, including:
birds, mammals, fish, reptiles, amphibians, insects, and crustaceans
Trigger for the migration:
local climate, local availability of food or water, the season of the year, or for mating reasons

21. Canadian geese resting on a pond during migration

22. Wildebeest Migration
Wildebeest begin migration during the dry season in search of food and water.

23. Hibernation
Hibernation is a survival strategy designed to conserve energy when conditions are harsh or when food is scarce.
Smaller animals tend to be more likely to hibernate because migration would require an huge amounts of energy.
Larger animals are less likely to hibernate because of the additional energy required to warm up a large body.

24. Some Animals that Hibernate
Smooth Green Snake

25. Western Painted Turtle