Plant systems

Learning goals We are learning the functions two main systems of a plant. We are learning the functions of stems, leaves and flowers of a plant.

Plant systems 2 Main systems: Root system Shoot system (stem, leaves, flowers)

General Root functions Anchorage Absorption of water and nutrients Storage

Root growth gravitropism roots grow positively towards gravity due to expansion of cells at elongation zone

General Shoot functions support photosynthesis reproduction

Shoot – stem functions support branches, leaves, and flowers transports substances between roots and leaves negative gravitropism – move away from gravity positive phototropism – towards light

Shoot – leaf functions Photosynthetic – produces own food Gas exchange – CO2 in & O2 out Temperature regulation – transpiration Designed to capture maximum light and minimize water loss Support, protection, reproduction and attraction

Shoot – flower functions Developed for sexual reproduction Pollen produced on anther ‘fertilizes’ ovule to form a seed

Learning goals We are learning the functions two main systems of a plant. We are learning the functions of stems, leaves and flowers of a plant.