Leaf Review
The tip of the leaf
What is the apex?
An invisible gas that plants "exhale" into the air in the process of making food. Humans inhale this gas in order to breathe.
What is oxygen?
This is what roots are always looking for.
What are water and nutrients?
Plants that have tubes inside that transport fluids like water
What are vascular plants?
Special chemicals within plants that cause roots to grow downward and cause stems to grow toward the light
What are auxins?
These stems grow sideways along the ground
What are runners?
The outside edge of the leaf
What is the margin?
The green pigment found in all green plants which helps them produce food
What is chlorophyll?
This is how roots add to their length.
What is roots grow longer from the tip, adding cells to the end of each root?
Bundles of xylem and phloem inside every stem
What are vascular bundles?
Roots turning toward earth
What is geotropism?
Plants in this category have hard, woody stems that grow thicker with age
What are woody plants?
The place where a leaf connects to the tree or the stem of the plant
What is petiole?
The invisible gas that plants need from the air to make food for themselves
What is carbon dioxide?
These do most of the work of absorbing water and nutrients for the plant.
What are root hairs?
Tubes that send water up from the roots to the rest of the plant
What are xylem?
Stems turning toward light
What is phototropism?
This is how stems get longer
What is by adding cells to the end/tip of stem?
The entire leaf blade
What is lamina?
Kind of food the plant makes
What is sugar?
The strongest part of the root. It is at the tip of the root. It is made up of a group of tough cells whose job is to push through dirt in search of moisture and nutrients.
What is the root cap?
Tubes that send sugary food down from the leaves to the rest of the plant
What are phloem? (think "FLOW em")
Example of plants that perform extreme phototropism
What are sunflowers and daisies?
Plants in this category have green, flexible stems that do not grow thicker with age. These stems perform photosynthesis.
What are herbaceous plants?
Banana shaped cells that expand and shrink to open and close the stoma of a leaf
What are guard cells?
The tiny pores or "mouths" on leaf or other green part of a plant that take in gases to help make food for the plant
What are stomata?
These are the three main jobs of roots.
What are:
1)To absorb nutrients and water from soil
2)To anchor the plant in place
3)To prevent erosion
As this makes more and more xylem and phloem it adds wood to the stem causing it to thicken. Only woody plants have this.
What is vascular cambium?
Another word for geotropism. It means turning in the direction of gravity.
What is gravitropism?
Plants in this category have unusual and beautiful stems because they are designed to store a lot of water to survive droughts.
What are succulents?