Adaptations

Question 1

what is adaptation and how does it develop

Answer 1

adaptations are features that increase an organism’s chances of survival and reproduction

• adaptations develop by natural selection
• best adapted individuals are more likely to survive and reproduce

Question 2

what are the three types of adaptations

Answer 2

1) Behavioural- ways an organism acts that increases chance of survival EG playing dead
2) Phycological adaptations- processes inside an organisms body that increases the likelihood of survival. EG hibernating to lower rate of metabolism, to conserve energy. Some bacteria produce antibiotics that kill other bacteria in the area, which means there is less competition- increasing the rate of survival

3) Anatomical adaptations- Structural features of an organism’s body that increases the chance of survival
EG whales have a thick layer of blubber to keep them warm in the cold sea, increasing their chance of survival

Question 3

why might different taxonomic groups have similar features

and give an example

Answer 3

• this is because the two organisms may have evolved in similar environments
  EG whales and sharks

Question 4

Marsupial Vs Placental mammals

Answer 4

Marsupial: EG kangaroos

• short gestation period
• Don’t develop a full placenta
• Are born early into development ( climb into their mother’s pouch and becomed attached to a teat and receive milk)

Placental: EG humans

• longer gestation period
• Develop a placenta
• born more fully developed

Question 5

adaptations of marsupial and placental MOLES

Answer 5

1) small eyes because they dont need to be able to see underground
2) stream lined head by having NO ears
3) claws for digging
4) Tube shaped body- making it easier to push through soil