Saturday, August 10, 2013

Plant parts and their functions

Plant Parts

Parts of Flower

Plant cell 

The "Typical" Plant BodyThe Root System
  • Underground (usually)
  • Anchor the plant in the soil
  • Absorb water and nutrients
  • Conduct water and nutrients
  • Food Storage
The Shoot System
  • Above ground (usually)
  • Elevates the plant above the soil
  • Many functions including:
    • photosynthesis
    • reproduction & dispersal
    • food and water conduction
  • Note: the shoot system includes the leaves and the reproductive organs, although these will be covered in more detail separately

Terminology :
  • ƒ Axil - the angle between  the stem and a leaf, branch, or petiole .
  • ƒ Axillary bud - a bud that  develops in the axil 
  • ƒ Flower - the reproductive  unit of angiosperms 
  •  Flower stalk or Peduncle- the structure that supports  the flower 
  • ƒ Internode - the area of the  stem between any two  adjacent nodes
  • Branch - an extension of the stem of a plant 
  • ƒ Leaf - their main function is to convert energy from sunlight into chemical energy (food)  through photosynthesis 
  • ƒ Node - the part of the stem of a plant from which a leaf, branch, or aerial root grows 
  • ƒ Petiole - a leaf stalk; it attaches the leaf to the plant 
  • ƒ Root - a root is a plant structure that obtains food and water from the soil, stores energy,  and provides support for the plant. Most roots grow underground 
  • ƒ Stem - (also called the axis) is the main support of the plant 
  • ƒ Tap root - the main root of some plants; the tap root extends straight down under the  plant 
  • ƒ Terminal bud - a bud located at the tip of the stem

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