B2 - Organisation Flashcards
1
Q
what is a communicable disease?
A
A disease which can be spread between organisms
2
Q
What is a non - communicable disease?
A
A disease which cannot be spread between organisms
3
Q
3 factors which affect health
A
Diet
Stress
Life situation
4
Q
Name 4 plant organs
A
Roots
Reproductive structures
stems
leaves
5
Q
How are xylem cells adapted to their function(3 points)
A
Lignin (strengthens elongated cells)
They are dead (hollow(resistance is low))
No end walls (increase surface area)
