Animal characteristics Flashcards
What are the characteristics of an animal
- Multicellular
* specialized cells
* No cell walls
* Eukaryotic - Heterotrophic
- able to reproduce sexually
- can move during at least one part of its life cycle
- stores energy as glycogen( carbohydrate)
What are the seven essential animal functions
- Feeding
- Respiration
- Circulation
- Excretion
- Response
- Movement
- Reproduction
What are the ways of feeding heterotrophic
- Herbivore
- carnivore
- Omnivore
- scavenger
- Decomposer
- Parasite
- filter feeder
define
Respiration
Takes in oxygen and gives off carbon dioxide
respiration
Methods
- Lungs
- through skin
- simple diffusion
- Gills
Circulation
Circulation for small animals
a)Very small animals rely on diffusion osmosis only
Circulation
Circulation for large animals
b)Larger animals have circulatory system
define
Exertion
Waste products are eliminated from blood tissues or organs
define
Response
for animals
Receptor cell response to external stimuli
response
examples of response:
sound,light,smell,and taste
define
Movement
for animals
Animals can move during at least one part of their life cycle
define
Reproduction
for animals
- Most animals reproduce sexually-more genetic diversity
- Many invertebrates can also reproduce asexually-increase population size faster
Body temperature regulations
Endotherm
Define and give examples
- Endotherm: maintains constant body temperature despite environmental changes
- example: humans, mammals, birds
Body temperature regulations
Ectotherm
define and give examples
- Ectotherm:Body temperature fluctuates with the environment. It rely on external factors to control body temperature.
- Examples: reptiles, amphibians, fish
Vertebrates vs invertebrate
invertebrate
- No backbone
- 95% of animals
- found in phyla