The Characteristics of Different Living Organism

MRS GREN Descriptions
Movement A change of position and place.
Reproduction Process that makes more of the same species.
Sensitivity Ability to detect and respond to surrounding changes.
Growth A permanant increase in size overtime.
Respiration Chemical reaction of breakdown of nutrient molecules to produce energy in cells for metabolism.
Excretion Removal of waste product from the body.
Nutrition Taking in food for energy; growth and development.

Concepts and Uses

Binomial System

Example: Felix domestica Genus (1) Felix, Species (2) domestica

Genus Species, Uppercase & Undercase

System

Organisms of the same species might not look identical to each other, because of different genetic traits achieved from the parents.


Animals Kingdom

Vertebrate Classification

All vertebrate animals have a backbone.

| Mammals | — Hairy; fur covered body. — Have mammary glands & placenta. | Horse; Dog; Humans | | --- | --- | --- | | Birds | — Feather bodies. — Have beak, 2 wings and 2 legs. — Lay eggs with hard shells. | Parrot; Eagle; | | Reptiles | — Dry scales bodies. — Lay eggs with rubbery shells on land. | Snake | | Amphibians | — Smooth and moist skins. — Lay eggs without shells in water. | Frog | | Fish | — Wet slimy scales bodies. — Breathe with gills. — Also lay eggs w/o shells in water. | Salmon; Shark |

Arthropod Classification

All arthropods animals have jointed legs, segmented & exoskeleton bodies.