Plant Structure and Transport in Plants — O/L Science

What must I remember about Plant Structure and Transport in Plants?

• Transpiration: water loss via stomata (evaporation); drives water up xylem
• Xylem: carries water and minerals UP from roots; dead cells with lignin
• Phloem: carries sucrose/sugars UP and DOWN; living cells (translocation)
• Phototropism: shoots grow toward light (positive); roots away (negative) — mediated by auxin

Test yourself (1 minute)

1. Factors affecting transpiration

   temperature, humidity, wind, light intensity

2. Auxin

   causes cell elongation; phototropism — shoots bend toward light

3. Root hair cells

   large surface area; absorb water by osmosis

Practise Plant Structure and Transport in Plants questions today

Must know

• Germination requires: water, warmth, oxygen

Source: NIE O/L Science — Unit 4: Plant Biology

What should I study first?

Next in the syllabus

Where does Plant Structure and Transport in Plants fit in the syllabus?

Grade 11 · Term 2