SIZE AND SURFACE AREA

Question 1

what determines the types of adaptions and organism will have

Answer 1

the relationship between the size of an organism or structure and its surface area to volume ratio

Question 2

what do smaller organisms have

Answer 2

a very large surface area in comparison to their volume . This means that there is a big surface for exchange of substances but also there is a smaller distance from the outside of the organisms to the middle of it . As a result , very small organism can simply exchange substances across their surface

Question 3

what do larger organisms have

Answer 3

a smaller surface area in comparison to their volume . Larger organisms will typically have a higher metabolic rate too which demands efficient transport of waste out of cells and reactants into the cells . As a result , they have adaptions that help make the exchange across surfaces more efficient .

Question 4

What affects heat exchange

Answer 4

body size and shape

Question 5

how does body size affect heat exchange

Answer 5

The rate of heat loss from an organism depends on its surface area .
if an organism has a larger volume (eg hippo) , its surface area is relatively small. This makes it harder for it to lose heat from its body.
if an organism is small (eg mouse) , its relative surface area is large , so heat is lost more easily . this means smaller organisms need a relatively high metabolic rate in order