1.5 Specialisation In Plant Cells

Question 1

Root hair cells

Answer 1

-specialized to take up water by osmosis and mineral ions by active transport from soil as they are found in tips of roots
-have large surface area due to root hairs meaning more water moved in
-large permanent vacuole that sppeds up movement of water by osmosis from soil to root hair cell
-mitochondria that provide energy from respiration for active transport of mineral ion into toot hair cells

Question 2

Xylem cells

Answer 2

-specialized to transport water and mineral ions up the plant from roots to shoots
-upon for ation, a chemical called lignin deposited which causes cell to die. They become hollow and end-to-end joined to form a continous tube so water and mineral ions can move through
-lignin is deposited in spirals which chelos cells withstand pressure from movement of water

Question 3

Phloem cells

Answer 3

-specialized to carry the products if photosynthesis to all parts of plants
-cell walls of each cell form structures called sieve plate when they break doen,allowing movement of substance from cell to cell
-the nergy these cells need to be alive is supplied by mitochondria of companion cells
-few organelles to move food faster