PLANT BIOLOGY

Plant Biology

•           Representative from Phylum Bryophyte, identifying what generation it is.

Bryophtes are thought to have been the first true plants.Phylum Bryophyta includes the mosses (Class musci), liverworts (Class Hepaticae) and hornworts (Class Anthocerotae). They have no vascular tissue or wood to give them structural support, nor do they have large leaves or flowers or cones.

Ex. Mosses belong to phylum Bryophyta because they do not have vascular tissue and the dominant genertation in mosses non-vascular plants is the haploid gametophyte.

•         Representative from Phylum Pteridophyta, identifying what generation it is.

The phylum Pterophyta is a group of non-seed plants with a fossil record dating back to the lower Devonian.

Ex. Ferns is an example of Phylum Pterodophyta, consist of vascular tissue,belongs to the diplod sporophyte generation and it it also a seedless plant.

•        Representive gymnosperm species

The gymnosperms are a group of seed-producing plants that includesPinophyta (or Coniferophyta) - Conifers
Ginkgophyta – Ginkgo
Cycadophyta - Cycads
Gnetophyta - Gnetum, Ephedra, Welwitschia.

Ex. Pinecones are gymnosperms because they contain vascular tissue and they also produce seeds.

• Evidence that a gymnosperm is adapted for survival life in a land environment.

  The visible part of the gymnospermous plant body represents the sporophyte generation. A sporophyte has a stem with roots and leaves and bears the reproductive structures. 

  Ex.Water and minerals are transported by the roots making gymnosperms more adapted for terrestrial life.

  

•  Representative angiosperm monocot species.

  Monocots (or monocotyledons, meaning one cotyledon) is a type of flowering plants. These type is classified according to the different morphological characteristics of leaves, flowers and fruit of flowering plants.

  Ex.Musa is one of three genera in the family Musaceae; it includes bananas and plantains. All circuluar fruits, vegetable and plants are monocot.

• Representative of dicot species

dicots (or dicotyledons, meaning two cotyledons) is a type of flowering plants. These type is classified according to the different morphological characteristics of leaves, flowers and fruit of flowering plants.

Ex. It is a dicot because it has two cotyledons.

• Evidence that angiosperms are adapted for survival in a land environment 

Angiosperms are adapted to life on land because they are flowering plants and thus attract animal pollinators because they are colorful and they have pretty petals.

Ex. The petals attract the animal pollinators making it easier to reproduce because the insects take the pollen to other plants.