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49 Cards in this Set
- Front
- Back
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What is a bird?
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1) endothermic vertebrate
2) has feathers 3) has 4 chambered heart 4) lays eggs |
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What are feathers made of?
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from the same material as repile scales and your fingernails
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What is one of the largest feathers that give shape to a birds body?
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Contour
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What are contour feathers used for?
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Used to balanced and steer in flight
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What are down feathers used for?
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trap heat and keep bird warm
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What is an insulator?
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a material that doesn't conduct heat well and prevents it from escaping
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What is a bird's crop?
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an internal storage tank that allows birds to store more food inside their body after swallowing it.
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What does a bird's gizzard do?
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a thick walled, muscular part of the stomach that SQUEEZES AND GRINDS PARTIALLY DIGESTED FOOD.
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How does oxygen relate to flying?
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they must have a lot of oxygen to release the energy needed for flying
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What helps birds have more oxygen?
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Air sacs to increase the amount of air that the lungs have available
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What kind of reflexes and reactions do birds possess?
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Very quick
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How are bird eggs fertilized?
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Internal fertilization.
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Describe the shell of bird eggs?
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hard shell
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What temperature must eggs have in order to hatch and how do they keep the temperature the same.
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They have to have body temperature of the parent bird and the parent sits or INCUBATES the eggs.
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What allows birds to live in a variety of environments?
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Different wings, legs, bills, claws, etc
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How are birds important?
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1) some help pollinate or seed dispersal
2) Some are food sources 3) help keep pest population (like rodents) in check |
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How does air move across wings?
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Air moves across the dome shaped TOP of wing surface while air moves BELOW the flat wing surface?
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How fast does the air move on top of wings and on bottom?
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On top it moves faster because the wing on top is long and it must move at the same time as the bottom
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Describe the air pressure on the wings at top.
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Air pressure on top is reduced because molecules are more spread out while moving fast
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How do they get the lift?
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from the difference in pressure above and below. It produces an upward life that causes the wing to rise
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Do all birds flap their wings and why?
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Some flap but some soar to glide to save energy
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Wht is a mammal?
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1) endothermic vertebrate
2) 4 chambered heart 3) skin covered with fur/hair 4) born alive 5) feed with milk from mother |
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Do we know that dolphins have fur/hair?
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We found out that they chin hairs.
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What does fur do?
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Insulates and protects mammals
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What kind of teeth do mammals have?
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1) Incisors- blade like, flat and used for cutting
2) Canines-sharp to stab and tear 3) Premolars & molars- grind, crush, shred food |
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How do the get oxygen?
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through the diaphram and lungs
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What is the diaphram?
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large flat muscle located at the bottom of the rib cage. it lowers pressure in chest cavity-so lungs fill with air.
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What kind of brain do mammals have ?
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COMPLEX- THE ABILITY TO ADAPT AND LEARN
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WHAT ARE THE SIGHT, HEARING AND SMELL GOOD FOR IN MAMMALS?
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FOR protection and predation
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Most mammals move how?
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Walk on all fours or run but some hop, glide or swim
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What kind of mammal fertilization?
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internal
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What are glands for producing milk for thier young called?
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MAMMARY GLANDS
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What is a MONOTREMES?
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MAMMALS THAT LAY EGGS
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Name 2 monotremes?
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Spiny Anteater
Duck-billed platypuses |
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Describe how the young anteater monotremes get milk?
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Milk seepsd out the mother's pores
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How does the young duck-billed platypus get milk?
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mOTHER'S MILK OOZES ONTO THE FUR OF THE MOTHERS BELLY
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How are young marsupials born and cared for?
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Born alive but continue to develop in the pouch
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what does GESTATION PERIOD mean?
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the length of time between fertilization and birth
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Who are the largest MARSUPIALS?
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KANGAROOS
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Which marsupial has very large litters?
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Opossums up to 21 at a time
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What is a placental animal?
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develops inside the mother's body until it is ready to function alone
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What is a placenta?
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the organ in a pregnant female that passes material between mother and the developing female
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Describe a flying mammal
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has skin between limbs tha is stretched to allow them to fly or glide!
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How do Rabbits and Hares adapt?
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long hind legs
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What is the largest group of mammals?
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rodents
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What is the brain like in primates?
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large with opposable thumbs
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How are hoofed mammals divided?
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those having even number of hoof and those with odd
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What are carnivores?
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eat meat
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Name marine mammals?
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whales, manatees, dolphins
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