Introduction to Plants 4/24/2017 Packet #15 Chapters #20 & 21

Introduction I Plants help provide the foundation for all living organisms on planet earth. Plants are responsible for capturing energy from the sun, and, ultimately that energy is passed along to animals—allowing them to survive. 4/24/2017

Specialized Plant Cells 4/24/2017

Specialized Plant Cells Parenchyma cells Aids with storage and movement of materials in plants Sclerenchyma cells Dead cells that usually provide strength and support. Collenchyma cells Capable of stretching and provide mechanical support 4/24/2017

Plant Tissue 4/24/2017

Plant Tissue Three Types of Tissue Dermal Tissue Vascular Tissue Plant’s protective covering in contact with the environment Facilitates water and ion uptake in roots Regulates gas exchange in leaves and stems Vascular Tissue Xylem & phloem Conducts water and solutes between organs Provides structural support Ground Tissue Packing and supportive tissue Food manufacturing and storage 4/24/2017

Plant Organs 4/24/2017

Introduction There are four major organs of a plant Flower* (Not all plants) Stem Root Leaf

Flower The flower contains the organs of plant sexual reproduction It attracts insects needed to carry the pollen between plants to allow pollination It's important for reproduction of flowering plants.

Stem The stem is the organ which holds the leaves upright in the air and facing the light It carries water and minerals to the leaves, and food around the plant The stem is important for nutrition, excretion and growth

Roots The root is the organ which provides anchorage for the plant so that it does not blow away or fall over With root hairs, the root provides a big surface area to help take in water and minerals from the soil – both of which are essential for photosynthesis The root is therefore important for nutrition

Leaf Site of photosynthesis Responsible for capturing light energy and transforming it into chemical energy. More details on the structure of the leaf in Packet #16. 4/24/2017

Organ Systems of Plants 4/24/2017

Organ Systems I There are two major organ systems in plants Shoot system Stems Leaves Root system Roots Trichomes 4/24/2017

Types of Plants {Organisms} 4/24/2017

Type of Plants {Organisms} I Seedless Non-Vascular Plants Bryophytes Mosses Hornworts Liverworts 4/24/2017

Type of Plants {Organisms} II Seedless Vascular Plants Ferns Whisk ferns 4/24/2017

Type of Plants {Organisms} III Gymnosperms Pine Cones 4/24/2017

Type of Plants {Organisms} IV Angiosperms Flowering Plants 4/24/2017

Review 4/24/2017