specialised cells

Question 1

red blood cell

Answer 1

contains haemoglobin in the cytoplasm -> so that it can transport oxygen from lungs to all parts of the body
no nucleus-> carry more haemoglobin = carry more oxygen
biconcave shape = increasing the surface area to volume ratio = oxygen enters the cell faster

Question 2

root hair cells

Answer 2

long and narrow = increases surface area to volume ratio = for cell to absorb water and mineral salts at a faster rate

Question 3

xylem vessels

Answer 3

long and hollow tubes with no cross walls = will not block water flow through the semen
walls are thickened with lignin = prevent the vessel from collapsing