PLANT PARTS Core Area PLANT SCIENCE Unit Title

PLANT PARTS Core Area: PLANT SCIENCE Unit Title: BASIC BOTANY Topic: PLANT PARTS

PLANT PARTS Roots Leaves Stems Fruit Flowers

PLANT PARTS

Types of root systems Taproot Fibrous roots Fleshy roots

ROOT PARTS Root hairs Root cap Meristem

Leaf parts blade petiole midrib apex base margin stomata

LEAF PARTS

LEAF TYPES simple compound needle simple leaves

Leaf arrangements simple leaves

Leaves compound leaves

STEMS central support structure of the plant

STEM PARTS buds nodes internodes bark lenticels leaf scars scale scars

FRUIT TYPES Simple: derive from a single pistil Compound: form from several ovaries at one time Accessory: develop from parts other than the ovary

Simple fleshy fruits

Simple dry fruits

Compound fruits n n Multiple Aggregate separate flowers fused into a single structure many ovaries on a single flower

FLOWERS Flowers usually contain four main parts: sepals petals stamens pistils

FLOWER PARTS A “complete” flower has all four main parts. A “perfect” flower has stamens and a pistil.

FLOWER PARTS The pistil is composed of : Stigma: structure at the top for collecting pollen Style: support structure below the stigma Ovary: enlarged part holding the ovules (eggs) The stamens consist of: Anthers: contain the pollen Filaments: anther support

FLOWERS

PLANT CLASSIFICATIONS Plants are classified by flower and type: A monoecious plant has male and female flowers on the same plant A dioecious plant has male and female flowers on different plants a pistillate plant has only female parts A staminate plant has only male parts A hermaphroditic plant has a perfect flower