Plant Diversity And Anatomy #3

Functions of Roots

1. Anchor the plant

2. Absorb water, retain nutrients

3. storage of food.

Buttress roots?

support trees with shallow roots.

Function of Pneumatophores?

Absorb oxygen for plants growing in poor oxygen.

Mangrove roots?

Provide structural stability.

Stems Functions

1. Transport water & food up and down the plant.

2. Hold leaves up in the sunlight.

3. Store food.

Stolon

ground roots.

Rhizomes

Underground roots.

2 products derived from plant stems

1. Potatoes.

2. Wood.

Monocots Stem

are dispersed through the stem in vascular bundles.

Dicots Stems

dispersed throughout the stem in vascular bundles.

What do woody stems produce?

Adult dicots form wood.

Dendrochronology

Annuals rings can be counted to find out age of the plant.

What do rings indicate?

Drought years.

Leaves

convert light energy into chemical energy and sugar.

Epidermis

outer layer of cells on upper & lower surface of leaf.

Palisade Mesophyll

site of photosynthesis.

Spongy Mesophyll

Layer of cells with air spaces for gas circulation

Veins

vascular tissue that delivers water & nutrients to leaves.

Stomata

opening in the epidermis that allow CO2 to enter the leaf & O2 to exit.

What are Flowers?

Reproductive structure of plants.

What is hermaphrodites?

Having both male and female parts.