Biology- classification
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- Created by: shauna gardner
- Created on: 11-09-12 18:07
describe the characteristics of the organisms fish and amphibians.
fish are poikilotherms, oviparous, have scales on there skin and breath though gills. Amphibians are oviparous, they are poikilotherms.They also breath though gills as young and lungs as adults. They have moist, smooth permeable skin.
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describe the characteristics of the organisms mammals and birds.
mammals are homeotherms, viviparous, have fur or hair on there skin and breath though their lugs. Birds are warm blooded have feathers and beaks, lay eggs and breath though their lungs.
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Describe the characteristics of the organism reptiles.
reptile are poikilotherms, oviparous, have dry scaly skin, have lungs
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state the differences between vertebrates and invertebrates
vertebrates have backbone and invertebrates do not.
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why do polar bears have a small surface area to ratio?
to reduce heat loss
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polar bears have large feet, why is this beneficial?
so there weight spreads around more on the ice.
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polar bears have lots of fat where as camels don't why is this?
as they have differet envioments the need different amounts of fat. for examples camels live in a hot environment so they have less fat.
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how many gallons of water can an camel drink at once?
20
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where is the body fat stored on a camel ?
the hump
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what does the hump on a camel store?
fat
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how do camels save water in there sytem
by little water coming out of their urine and sweat
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how do polar bears and camels camouflaged?
there skin changes color
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gills obtain dissolved oxygen from the water. but why do there gills have a large surface area
to absorb more oxygen
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how do fish swim quickly though water ?
they have a streamline body
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True or false- fish are streamline so they can swim quickly
true
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true or false-camels have sand colored skin so they can camouflaged in with their environment
true
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how do fish breath ?
by there gills obtaining dissolved oxygen
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how do cactus's reduce water loss ?
by having a tick waxy layer of skin so it doesn't let water out.
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what protects cactus's from predators ?
the spines (spikes)
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when and why does Stomata open in cactus's ?
They open at night to reduces water loss.
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why do cactus's have shallow roots?
to absorb surface water
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why do cactus's have deep-speeding roots?
to get water from the underground water supplies
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why does a water lily have a flexiable steam ?
to bend with the flow of the current.
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in a water lily what makes it maximize photosynthesis ?
the leaves that grow on the surface of the water
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true or false- cactus's have thin and waxy skin tostop the loss of water ?
false- they have THICK waxy skin
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what does adaptation mean?
it is special features or type of behaviors that make organisms well suited to their environment
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how has adaptation developed ?
by evolution
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what does oviparous mean?
vertebrates lay eggs externally
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what does viviparous mean ?
viviparous is vertebrates that give birth to live young, so their young develops inside there body.
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what does homeotherm mean?
it means vertebrates that are warm blooded animals that can keep their temperature
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what does pilkilotherm mean?
vertebrates that are cold blooded, they also can not keep their temperature.
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name 2 vertebrates have external fertilization?
fish and amphibians
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name 3 vertebrates that have internal fertilization ?
reptiles, birds and mammals
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name 3 vertebrates that are poikiltherm
fish, amphibians and reptiles
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name all the vertebrates that are homeotherm
mammals and birds
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there are four vertebrate groups that are oviparous, what is the one that is viviparous
mammals.
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what is a ring species ?
a ring speciesis two different species that that are closely related to one another, but they overlap and interbreed in certain parts of the ring.
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why is classification complicated?
1) Hybrids can produce fertile offspring, meaning they could be considered as a new species 2) ring species make it difficult as they are two different species but they are so closely related some can interbreed
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do scientists classify viruses?
no, because they are NOT LIVING.
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Other cards in this set
Card 2
Front
describe the characteristics of the organisms mammals and birds.
Back
mammals are homeotherms, viviparous, have fur or hair on there skin and breath though their lugs. Birds are warm blooded have feathers and beaks, lay eggs and breath though their lungs.
Card 3
Front
Describe the characteristics of the organism reptiles.
Back
Card 4
Front
state the differences between vertebrates and invertebrates
Back
Card 5
Front
why do polar bears have a small surface area to ratio?
Back
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