animial diversty

Importance of animals

provide rescources

provide assitance

provide ecostystn servce

resources provided

food, materials, transportation and power, medical and pharmacuticals

assistance provided

guide/sniffer dog, model organism research

ecosytsem servies

pollination, decomposition, transmit dieases, crop pest

Characteristics of animals

Heterotrophs

Movement, at some point in their life cycle

All animals except sponges have nerve cells
(neurons) and muscle cells

Cells with an extracellular matrix allow for cell-cell adhesion
and communication

Key innovation- multicellularity

allows them to be more efficent dividing up labor,

the indviual organism can grow larger

gather more resources, produce more offspring, and evade more predators

Key innovation- muscles

allows the organism to move on its own

Key innovation- radial symmetry

Greater access to enviorment, more likely to encounter more prey

Key innovation- Bilateral

Encounter prey and other aspects of enviorment at the end

Key innovation- coelum

Space for circulation of oxygen and nutrients

Allows internal organs to move independently

segmentation

Enaples specilization (sensory feel, functions, walking)

Diversification of Animals
Sensory Organs

Sight –
Hearing –
Olfaction –
Taste –
Touch –

Sight – light is stimulus
Hearing – sound is stimulus
Olfaction – molecules are stimulus
Taste – molecules are stimulus
Touch – contact, pressure are stimuli

Diversification of Animals energy

Thermal energy –
Magnetic fields –
Electric fields –
Barometric pressure –
Gravity –

Thermal energy – aids in finding prey
Magnetic fields – aids in navigation
Electric fields – aids in detecting prey
Barometric pressure – aids in avoiding storms
Gravity – aids in movement in aquatic environments

Diversification of Animals
Ecological Role

Detritivores –
Herbivores –
Carnivores –
Omnivores –

Detritivores – feed on dead organic matter
Herbivores – feed on plants and algae
Carnivores – feed on animals
Omnivores – feed on a combination of plants,
animals, fungi, protists, archaea, and/or bacteria

Diversification of Animals
Feeding Strategies
Suspension (filter) feeders

capture food by filtering
out particles floating in water or drifting through the air

Diversification of Animals
Feeding Strategies

Deposit feeders

Deposit feeders ingest organic material that has
been deposited within a substrate or on its surfac

Diversification of Animals
Feeding Strategies

Fluid feeders

suck or mop up liquids such as
nectar, plant sap, blood, or fruit juice

Diversification of Animals
Feeding Strategies
Mass feeders –

take chunks of food into their mouths

Porifera chracteroistocs

Have spicules which
provide structural support

Many species have
photosynthetic symbionts
(mutualistic relationship)