Invertebrates
What is an invertebrate?
An animal without a backbone.
They are multicellular animals that have a backbone, classified into five groups: mammals, reptiles, fish, birds and amphibians.
How can we define a bird, what characteristics do they have?
a warm-blooded egg-laying vertebrate animal distinguished by the possession of feathers, wings, a beak, and typically by being able to fly
What is an amphibian?
a cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, salamanders, and caecilians
What are gills?
A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide
Invertebrates reproduce quickly? True or false
True- One reason for the success of invertebrates is how quickly they reproduce. Sponges and corals, for example, produce both eggs and sperm. Social insects such as ants and bees lay eggs that can develop without fertilization
What are extremities and describe what extremities a human has?
An extremity is a limb of the body, particularly the hands and feet so humans have two arms and two legs but most mammals have four legs.
What is the largest bird in the world?
An ostrich
How many legs do amphibians have?
4
How do reptiles reproduce?
Reptiles are oviparous so they lay their eggs of the land
What percentage of the animal kingdom are invertebrates? a) 15% b) 48% c) 97%
c) 97%- This is by far the largest group in the animal kingdom: 97 percent of all animals are invertebrates. So far, 1.25 million species have been described, most of which are insects, and there are millions more to be discovered.
Are mammals cold blooded?
No, all mammals are warm blooded
what is the most common type of bird in the world? a) chicken b) pigeon c) duck
a- chicken, 23 billion approx in the world
How do reptiles reproduce?
they are oviporous and lay eggs in water
Can a fish drown in water?
How do molluscs reproduce?
They lay eggs
Do ALL mammals have hair or fur?
Yes- they all do, even dolphins and whales that live in the ocean for insulation
What is a nest and how do birds use them?
A nest is a place used from sticks, moss and leaves to make a secure place for birds to leave their eggs
All amphibians have permeable skin, what does this mean?
Having skin with openings that liquids (or gasses) can pass through. Amphibians have unique skin compared to that of many other vertebrate animals. An amphibian's skin is thinner, which allows for higher levels of oxygen to exchange with the blood vessels that are close to the surface of the skin
Name 3 characteristics of reptiles
eg. they have lungs, they have scales, they are cold blooded
Name three invertebrates that live on land
worms, insects and spiders.
All mammals except ONE has teeth. Which animal do you think doesn't have teeth a) ant eaters or b) rhino
The anteater has no teeth. Their stomach does all the chewing. It has hardened folds that rub against each other and grind insects down for digestion. To help with this, anteaters swallow sand and small pebbles along with their food.
The ostrich is the fastest bird on land but what is the fastest bird that can fly?
An eagle. A bald eagle can fly 120 – 160 km/h
What do amphibians use to breathe under water?
Most fish are herbivores but can you think of a carnivore fish?
The shark is a noted predator that hunts for prey.