AOS2: Functioning systems

Question 1

* specialisation and organisation of plant cells into tissues

Question 2

for specific functions in vascular plants

Question 3

including intake… of water

Question 4

movement of water

Question 5

loss of water

Question 6

* specialisation and organisation of animal cells into tissues

Question 7

animal cells into organs

Question 8

animal cells into systems

Question 9

with specific functions: digestive,

(5 marks)

Answer 9

The mouth begins the process of digestion by breaking food into smaller pieces and exposing it to digestive amylase enzymes contained within the saliva.1
Food travels down the oesophagus to the stomach.2
In the stomach, food is churned and protease enzymes and digestive juices are released.
3
In the small intestine, bile from the liver and gallbladder is secreted, as well as digestive enzymes from the pancreas.4
In the small intestine, the majority of the fat breakdown and continued breakdown of proteins and carbohydrates occurs, before they are all absorbed into the bloodstream.5
In the large intestine, the final water and vitamin absorption occurs before undigested food is turned into faeces and eliminated out the anus

Question 10

endocrine

Question 11

and excretory