Classification

Living and Non living

• Living = alive- individual living things are called organisms

• Dead = was once alive

• Non living = was never alive

Organisms• Plants– algae and fungi– mosses and ferns– conifers and flowering

plants

• Animals– worms, snails, insects– reptiles, amphibians– mammals, birds

• Microorganisms

MRS GREN• Living organisms carry out the life functions. The life functions

are shown below and can be remembered using the acronym MRS GREN

MovementRespirationSensitivityGrowthReproductionExcretionNutrition

Movement

• A plant can move parts slowly, animals can move their whole body or limbs quickly

Respiration

• Organisms are able to get energy out of food by a process called respiration

Sensitivity

• Living things can detect and respond to changes in their environment

Growth

• All living things change over time – this may be changes in a life cycle or size

Reproduction

• Living things are able to produce new offspring which are similar to parents

Excretion

• Living things are able to dispose of poisonous wastes produced internally

Nutrition

• Living things are either able to make their own food (producers) or get food by eating others (consumers & decomposers)

Nutrition - Food Types

• Scientists have grouped together different sorts of plants and animals depending on the food they live on and how they get it

• The three types of organism are:1. Producers2. Consumers3. Decomposers

Producers

• Plants - produce their own food by the process of photosynthesis

Consumers

• Use other living things as food. They may eat:– plants (herbivores) or– animals (carnivores),

or– both (omnivores)

Decomposers

• These organisms feed off dead plants or animals– eg. Worms, bacteria,

fungi– they are important in

recycling dead organisms into nutrients for plants

Types of nutrition