Angiosperms Prof. Ms. Vrushali S. Dighe Department Of Botany S. M. Joshi College, Hadapsar, Pune.

Angiosperm A plant that produces seeds that are enclosed in fruit Greek word that means seed in a vessel Two characteristics of an angiosperm: Flower Fruit

Flower Vocabulary Petals – colorful structure when flower opens Sepals – leaf like structures that enclose a bud

Flower Vocabulary Stamens – male reproductive parts Filament – thin stalk Anther – produces pollen – knob at top of filament

Flower Vocabulary Pistils – found in center of flower Stigma – sticky tip of pistil Style – slender tube that connects the stigma to the ovary (hollow base of the flower where ovules are

Angiosperm Flower

Reproduction of an Angiosperm Pollen falls on stigma Sperm and egg cell join together in flower’s ovule Zygote develops into the embryo part of the seed

Seed Dispersal As seed develops, the ovary changes into a fruit a ripened ovary and other structures that enclose one or more seeds

Types of Angiosperms Divided into 2 major groups Monocots Dicots

Monocot Have one seed leaf Flowers usually have either three petals or a multiple of three petals Long slender leaves with veins that run parallel to each other Bundles of vascular tissue is scattered throughout stem

Dicots Produce seeds with two leaves Flowers have 4 or 5 leaves or multiples of these Leaves are wide with veins that branch off from one another Bundles of vascular tissue bundled together