insects and their relatives
DESCRIPTION
Insects and their Relatives. What are insects?. Insects are like arthropods because they have a segmented body, an exoskeleton, and jointed appendages They have a body divided into three parts : the head, Thorax, and abdomen Three pairs of legs are attached to the thorax. Uniramians. - PowerPoint PPT PresentationTRANSCRIPT
Insects and their Relatives
What are insects? Insects are like arthropods because
they have a segmented body, an exoskeleton, and jointed appendages
They have a body divided into three parts: the head, Thorax, and abdomen
Three pairs of legs are attached to the thorax
Uniramians Insects, centipedes , and millipedes are
all Uniramians It is the group that contain more
species than all other groups of animals alive today
Uniramians have jaws, one pair of antennae, and unbranched appendages
They all have very different life styles
Centipedes They have more than 100 pairs of legs,
depending on the species. They are carnivores whose mouths
include a pair of venomous claws. Centipedes usually live beneath rocks
or in the soil, theses centipedes loose water fast because of their spiracles cannot close, therefore they cannot live in most humid areas.
Unas fotos de un Centipede
Millipedes have a highly segmented body but each
millipede can bear two legs instead of one ( diego talk’s)
They live near dead logs and under rocks because they feed on dead plants.
if threatened they will roll up to a ball to protect themselves.
Some of them can release toxic chemicals when they feel in danger
Unas fotos de un Millipede
jaw dropping facts about insects!!! (eyes)
Insects use a multiple set of sense organs on a everyday basis (eyes, taste, ears, touch, and smell)for example:
They have compound eyes that are made up of many lenses to detect change in movement and changes of color.
They see less detailed than us but they detect movement really fast therefore its hard to swat a fly.
Taste They have chemical receptors for taste
and smell on their mouth parts They also have it on their antenna and
legs so if they step on water it knows if it is made up of salt or if it contains sugar
They also have sensory hairs that detect movement when they fly or in water
Use saliva to break down their food
ears they have very developed ears to hear
sounds far above the human range People think that bugs do not have
ears because they cannot see it but most insects hear better then humans do.
Touch Insects have three pairs of legs which
depending on its species can be used to help for walking, jumping or capturing its prey.
They have hooks that are used for grasping and defense.
Reproduction These insects grow and developed
through a cycle called metamorphosis (Lester talks)
insects hatch nothing like their parents and feed completely different ways than adult insects. The larva forms into a pupa where the body is completely different and when it emerges it looks like another animal. Example (butterflies)
metamorphosis
After metamorphosis The cocoon hatches and turns the larva into a
complete different animal. Example the butterfly which is the most
common insects fly depending on their species cause
some fly slow like butterflies or fast like flies or bees that can change their position and speed really fast.
A dragonfly can also reach speeds as fast as 50 kilometers an hour!
This is the circle of life for bugs.
insectos
Any questions?