Plant Reproduction

FernsFerns

Fern Reproduction The reproduction process of a fern requires moisture. As a result, they can only reproduce where there is sufficient moisture.

Fern Reproduction

Seed Plants

Two types of seed plants Gymnosperms Angiosperms Cone Bearing Plants Flowering Plants

Gymnosperms “ Naked Seeds” Seeds produced in a cone They do not produce fruit.

Gymnosperms “ Naked Seeds” Male Cones Found higher on trees Contain pollen

Gymnosperms “ Naked Seeds” Female Cones Found lower on trees Open to take in pollen Close for germination Open again to release seeds.

Angiosperms Flowering plants that produce seeds in fruit. Seeds are covered with a seed coat.

Angiosperms There are 2 key features of angiosperms. 1. Flowers 2. Fruits

Flower Structure and Function

What are flowers for? Flowers are the reproductive organs of angiosperms.

Flower Structure

Female Reproductive Structure Pistil (Carpal)  Stigma Sticky top for trapping pollen.  Style Stalk connecting the stigma and to the ovary  Ovary Filled with Ovules (eggs)

Flower Structure Female Reproductive Structure Pistil (Carpal)  Fertilized ovules will become seeds  Ovaries become fruits

Flower Structure Male Reproductive Structure Stamen  Anther Pad covered with sticky or barbed pollen  Filament Stalk holding up anther

Flower Structure Sepals  Outermost floral parts  Are often green and look like ordinary leaves  Protect the developing flower

Flower Structure Petals  Found just inside the sepals  Often brightly colored to attract pollinators ( ex: insects and birds)

Types of Flower Some flowers can be missing some parts.

Types of Flowers CompleteIncomplete Have all flower organs  Sepals  Petals  Stamen  Pistol Missing one or more of these organs

Types of Flowers PerfectImperfect Have all reproductive structures  Stamen (male)  Pistol (female) Missing one of the reproductive structures

Pollination Pollination is the transfer of pollen (male gamete) from the anther to a stigma (part of the pistol).

Pollination Pollination can be accomplished by the wind or by animals. Insects are the most common animals that will pollinate a pistol.

1. When a pollen grain reaches the stigma, it sticks and begins to grow a “root”. Creation of a seed 2. The root of the pollen continues down the style until it reaches the ovary. 3. When it reaches the seed, it fuses with it and creates a fertilized seed.

FruitsFruits  Mature, ripened ovary  For protection and dispersal of seeds  Mature, ripened ovary  For protection and dispersal of seeds

Types of Fruits SimpleAggregateMultiple

Types of Angiosperms Types of Angiosperms There are two types of angiosperms 1.Monocots & 2. Dicots 2. Dicots

What do monocot and dicot mean? Mono = Mono = One Di = Di = Two One Two Cot refers to the term cotyledon This is the first leaf or leaves produced by a sprouting plant

Monocots vs. Dicots Monocots Dicots 1 cotyledon 2 cotyledons

Monocots vs. Dicots Monocots Dicots Leaves with parallel veins Leaves with branched veins

Monocots vs. Dicots Monocots Dicots Flower parts in multiples of 3 Flower parts in multiples of 4 or 5

Monocots vs. Dicots Monocots Dicots Fibrous root systemsTap

Monocots vs. Dicots Monocots Dicots Usually grassy plants Usually Usually non –grassy non –grassy Branching stems Branching stems May be woody May be woody

Monocots vs. Dicots Monocots Dicots CornCorn GrassGrass DaisiesDaisies BeansBeans Palm Trees Oak Trees