Leaves Flashcards
Name 3 functions of leaves
Produces food through photosynthesis
Release excess water through transpiration
Allows carbon dioxide and oxygen to enter and leave the plant - gases used in photosynthesis and respiration
Name the 2 ways a leaf can be attached to a stem
Petiole
Sessile
Describe a petrolatum leaf
Attached by a petiole
Describe a sessile leaf
A leaf directly attached to the stem
Give an example of a petiolate leaf
Fagsus sylvatica (beech)
Name an example of a sessile leaf
Miscanthus nepalensis
What is a petiole?
What is its purpose?
The part a leaf is attached to
Provides some flexibility in positioning the leaf to gain maximum light
What is a lamina?
What is it sometimes called?
The whole leaf
Sometimes called a blade
What is the midrib?
Where is it located?
The main vascular bundle of the leaf
It runs along the centre of the leaf
What are veins?
Webs of vascular bundles spreading from the midrib to all parts of the leaf
What is the axillary bud?
The bud between the leaf and stem
Name 3 types of leaf arrangement
Opposite
Alternate
Whorled
A leaf may be divided into…
Leaflets
What is a simple leaf?
A single leaf, without leaflets
A single leaf without leaflets is called a…
Simple leaf
