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Introduction To Plant Science. Introduction To AgriScience and Technology GHS Mr. Ham. Objective 1.1 What roles do plants serve in the ecosystem. Plants serve several roles in our ecosystem by providing the following items: Oxygen Food Reduce soil erosion Medicines. - PowerPoint PPT Presentation
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Introduction To Plant Science
Introduction To AgriScience and Technology
GHS
Mr. Ham
Introduction To AgriScience and Technology
GHS
Mr. Ham
Objective 1.1What roles do plants serve in the ecosystem• Plants serve several roles in our ecosystem
by providing the following items:–Oxygen–Food–Reduce soil erosion–Medicines
• Plants serve several roles in our ecosystem by providing the following items:–Oxygen–Food–Reduce soil erosion–Medicines
Objective 1.2How plant differ from animal
• Plants differ from animals in several ways– Plants produce their own food with the
aid of nutrients from the soil.– Plants are stationary.– Plants have rigid cell walls with cell
membranes inside.– Plants utilize carbon dioxide and give
off oxygen.
• Plants differ from animals in several ways– Plants produce their own food with the
aid of nutrients from the soil.– Plants are stationary.– Plants have rigid cell walls with cell
membranes inside.– Plants utilize carbon dioxide and give
off oxygen.
Objective 1.3List how plants and animals are alike.• Plants and animals are alike in several
ways.– They have a life cycle.– They carry on life processes, such as
circulation, respiration and growth.– They are made of cells.– They must have food.
• Plants and animals are alike in several ways.– They have a life cycle.– They carry on life processes, such as
circulation, respiration and growth.– They are made of cells.– They must have food.
Objective 1.4List three major factors that affect plant growth• Major factors in climate that effect plant
growth include:– Temperature
• Warm season plants start growing in the spring and finish in the fall. I.e., bananas, oranges, cotton and corn.
• Cool season plants have a life cycle that begins in the fall and ends when summer begins. I.e., wheat, rye, and oats.
• Major factors in climate that effect plant growth include:– Temperature
• Warm season plants start growing in the spring and finish in the fall. I.e., bananas, oranges, cotton and corn.
• Cool season plants have a life cycle that begins in the fall and ends when summer begins. I.e., wheat, rye, and oats.
Objective 1.4 (cont.)
• Precipitation
• Light
• Precipitation
• Light
Objective 1.5Define life cycle in terms of plants and how they are classified• Life Cycle: refers to the length of the plant’s life.• Plants can be classified into three groups on the
basis of their life cycle:– Annuals- complete life within one year.– Biennials- complete life cycle in two years.– Perennials- plants live for more than two years.
• Deciduous- plants that lose their leaves in the winter.• Evergreens- plants that retain their leaves year round.
– *Plants may be perennials but only used as an annual in the agricultural industry. I.e. cotton
• Life Cycle: refers to the length of the plant’s life.• Plants can be classified into three groups on the
basis of their life cycle:– Annuals- complete life within one year.– Biennials- complete life cycle in two years.– Perennials- plants live for more than two years.
• Deciduous- plants that lose their leaves in the winter.• Evergreens- plants that retain their leaves year round.
– *Plants may be perennials but only used as an annual in the agricultural industry. I.e. cotton
Objective 1.6List the different parts of a plant
• Parts of the plants are of two major kinds:– Vegetative
•Leaves- makes food for the plant through a process known as photosynthesis.–Blade -Veins–Epidermis -Stomata–Internal cells -Waxy coating–Petiole -Stipule
• Parts of the plants are of two major kinds:– Vegetative
•Leaves- makes food for the plant through a process known as photosynthesis.–Blade -Veins–Epidermis -Stomata–Internal cells -Waxy coating–Petiole -Stipule
Parts of a Leaf
Objective 1.7List the two different types of leaves
• Leaves are divided into two groups:
–Simple
–Compound
• Leaves are divided into two groups:
–Simple
–Compound
Simple Leaf
Compound Leaf
Objective 1.8List the three ways leaves attach to the stem
• Leaves attach to the stem in several different ways.
–Alternate–Opposite–Whorled
• Leaves attach to the stem in several different ways.
–Alternate–Opposite–Whorled
Alternate Attachment•
Opposite Attachment•
Whorled Attachment
Objective 1.9List the different functions of the stem
• The stem supports the leaves and flowers.
• The stem transport water and other materials.
• The stems also store food.
• The stem supports the leaves and flowers.
• The stem transport water and other materials.
• The stems also store food.
Objective 1.10List the different parts of the stem
• Bark• Cortex• Phloem• Cambium• Xylem• Pith
• Bark• Cortex• Phloem• Cambium• Xylem• Pith
•
Xylem & Pholem•
Objective 1.11List the types and roles of roots
• Role of roots– Roots anchor the plant.– Roots take in water and
minerals.– Roots store energy.
• Types of roots– Taproots– Fibrous roots
• Role of roots– Roots anchor the plant.– Roots take in water and
minerals.– Roots store energy.
• Types of roots– Taproots– Fibrous roots
Taproot
Fibrous Root
Taproot vs. Fibrous
•
