The hierarchy

of life in the pyramid.​

Plant Body Systems

Plants only have two body systems: Roots and Shoots

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Roots are below ground.

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Shoots are above ground.

Root system

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1. Brings in water and nutrients from the soil

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2. Anchors and stabilizes the plant

Shoots System

1. Leaves (conduct photosynthesis)

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2. Stems (store & transport water & nutrients)

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3. Flowers / fruits / cones (reproduction)

Vascular Tissues in Plants

Vascular tissues in plants are similar to the circulatory system of animals. They both carry water, nutrients, and wastes throughout the body.

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Plants have two types of vascular tissues:​

a. Xylem ​

b. Phloem 

Xylem

a. Xylem (non-living; transports water)​

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How to remember xylem transports water?

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THINK!  Water and XYlem… like your abc’s! WXY(Z)

Phloem

b. Phloem (living; transports nutrients / sugar)​

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How to remember phloem transports nutrients?

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THINK!

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Nutrients = Food and Phloem… 

Food and phloem both start with “F” sound!

Tropism

Tropism is directed growth in response to a stimulus.

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One type of tropism is phototropism.

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Phototropism: a plant's response to light.

Tropism

Thigmotropism: A plant’s response to touch

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Examples: Vining plants, Venus fly trap, Touch me not (sensitive plant)

Tropism

Geotropism (a.k.a. gravitropism) = a plant's response to gravity.

Roots go down, shoots go up.​

Plants: Sexual Reproduction

Stamen: male part of the flower.

It includes:

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Anther - produces pollen (male gamete, or sperm)

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Filament 

Plants: Sexual Reproduction

Pistil (Carpel): female part of the flower

It includes:

Stigma 

​Style 

Ovules - female gametes; fertilized by pollen

Pollination

Flower petals are often large, brightly colored and fragrant.

This is to attract POLLINATORS!

Pollination: The transfer of pollen from the anther to the stigma.

Common pollinators:

Hummingbirds, moths, bees, butterflies, bats, etc.

Feedback Mechanisms Maintain Homeostasis