Leaves
What is the function of a leaf?
To absorb light and carry out photosynthesis
What is the purpose of a root?
To anchor the plant and transport minerals.
What is the 3 functions of a stem?
Produce leaves, branches and flowers. Support the flower. And transport substances throughout the plant.
What is a tropism?
Growth responses in plants
What does ATP stand for?
Adenosine Phosphate
What are stomata?
Small openings in the epidermis that allow CO2, H2O and O2 to diffuse in and out of the leaf.
What are the two types of root systems?
Taproot and fibrous
What is a node?
Part where the leaf attaches to the stem
What are the three tropisms?
Light, Touch and Gravity
Chlorophyll
Define Homeostasis:
Plants maintain homeostasis by keeping their stomata open just enough to allow photosynthesis to take place. But not enough that the plant losses excessive amounts of water.
A mature root has an outside layer called the?
Epidermis
Which vascular system transports food and nutrients to the plant?
Phloem
Which particular hormone are cells affected by?
Target cell receptors
What is photosynthesis?
Plants convert the energy of sunlight into chemical energy stored in the bonds of carbohydrates.
What is a guard cell?
Highly specialized cells that surround the stomata and control their opening and closing.
What is the difference in a taproot and fibrous root system?
Taproots: One main root in the ground with smaller roots growing off of it.
Fibrous: Bundles of smaller roots all of equal size
Which vascular system transports water and minerals up the stem?
Xylem
What is winter dormancy?
When plants prepare for winter by turning off their photosynthic pathway.
What is the difference in a heterotroph and autotrophs?
Heterotrophs: consume other living organisms to receive energy.
Autotrophs: produce their own energy through sunlight.
What is gas exchange in plants?
Leaves take in CO2 and give off O2 during photosynthesis.
What type of tissue is in roots?
Dermal, Vascular and Ground
What is the difference in primary and secondary growth?
Primary: When a plant stem grows in length (height)
Secondary: When a plant stem grows in width.
What happens to chlorophyll during leaf loss?
It breaks down
How does ATP release energy?
ATP can release and store energy by breaking and re-forming the bonds between phosphate groups.