Review Flashcards
Define Natural Selction
Survival of organism because of favorable traits in their environment.
Give 3 examples of natural selection
Galapagos ground finch, Giraffes with long necks, peppered moth horse evolution
If you were a cat living in the mojave desert with kind of fur would you want to have
Long/Thick
Medium/Thin
Explain what is genetic variation
Sexual reproduction allows organism to express different traits which enable a species to adapt and survive
Define Selective Breeding, and give 3 examples.
When humans mate organisms to produce a desired trait. Dog breeds, seedless grapes, mating horse and donkey to make a mule
In the picture which moth will most likely survive? Explain. green
Dark moth, they blend in with their environment better so they are less likely to be seen by predators
How would DARWIN explain the diagram? yellow
The short giraffe is not able to reach the food supply. Therefore it is less likely to reproduce and pass on the gene for a short neck.
Explain what a dichotomous key is.
A series of yes/ no (2 choice) questions that classities and names organisms scientifically.
Describe and explain how animals that are predators might develop different adaptations than animals that would be considered prey. (provide examples)
- (4) Identify two internal structural adaptations in plants and explain their function.
Predators - have adaptations to help them catch prey; like owls have night vision and can spin their head around, claws, sharp teeth
Prey - have adaptations to help them get away; some use camouflage (blend in with environment) or mimicry (so they appear poisonous), very fast
(4) Identify two internal structural adaptations in plants and explain their function
Xylem - carries water and nutrients
Phloem - carries sugar (from photosynthesis)
Identify the physiological adaptation that helps humans maintain a stable internal body temperature while the temperature of their surrounding environment increases.
Sweating, shiver (1/2 for homeostasis)
identify four different adaptations that allow a camel to survive in the desert.
Store fat in humps (diet)
Drink large amounts of water at 1 time, stores in bloodstream
2 sets of eyelashes - to blink both ways
Hairy ears and nose to protect from sand
Prove or disprove the following statement: “Birds are well adapted for flight because they have specialized beaks for getting food”.
Disprove - beaks have nothing to do with flying
Prove - change specialized beaks to hollow bones
(3) Identify three adaptations that would enable a fish to survive underwater. (explain how the adaptations benefit the organism in its environment)
Swim bladder
Gills - breathe in water
Fins/tail - to swim
Scale - protection
Swim bladder
(4) Identify four adaptations that would help an organism survive in a region that has very harsh winters. (2 plant and 2 animal)
Plant - phototropism, loose leaves to conserve sugar/ resources,
Animal - hibernate, migrate, shiver, extra fur, stock up on food, extra fat layer
