plants without seeds presenter: usman saiyed date: 4 th oct 2010 teacher: sr. lisa 1

1

Plants without SeedsPresenter: Usman SaiyedDate: 4th Oct 2010Teacher: Sr. Lisa

There are simple plants in nature which don’t have seeds.

For example Ferns, Algae, moss.

Ferns reproduce by spores.

Spores are special storage systems for reproduction which

have all the genetic information.

NextFern life cycle

2 Types of Seedless Plants

3 Fern life cycle

4

Brown Red

Algae

GreenMosses

Liverworts

Hornworts

Another plant without seed is Algae.Algae was the first type of plant on earth. Algae must live in or near water.

sargassum

Algae

5

Algae are three types based on phylumThey get names from the pigments found in there cells.

Types of Algae-Phylum

Life cycle of Algae:Algae reproduce by fragmentation and by spores. In the sea, which is such a stable environment.

Algae  attaches to rocks by a holdfast. Spores settle and grow into gametophyte. This makes anisogametes which form a zygote which grows into the sporophyte generation. The sporophyte and gametophyte generations look exactly alike.

6Life cycle of Algae

7

Red algae can grow up to be several feet long.

But they can't grow up to brown algae.

Red algae is even found in food!

Found in types of food and clothing. Ice cream, dressing, chocolate milk, and frosting.

Red Algae

8

Found in tropics it needs sunlight to produce food.

Brown Algae

9

Green Algae Some may live in unusual places.

Green Algae

10

Pictures of Land plants without seeds

Pictures

11

They have vascular tissues.Unlike other seedless plants they do have special adaptation.-waxy covering -roots that enable water gathering. -system of tubes transport nutrients

Ferns

Vascular Plant

12

Mosses, liverworts, and hornworts are tiny plants that live in moist places.

Found on wet rocks, damp tree barks, muddy banks or streams.

In some cases they might cover the ground like a fuzzy green carpet.

13

Thank you for viewing my presentation

The End