2.9 - Basic Leaf Anatomy Flashcards
1
Q
What is the cuticle’s purpose?
Where is it located?
A
- It’s a waxy coating to prevent water loss
- Located on the very top and bottom
2
Q
What is the palisade mesophyll cell?
Where is it located?
A
- It’s where chlorophats are
- where most photosynthesis occurs
- located underneath the upper epidermis, (3rd structure from the top) typically green in colour
3
Q
What is the bundle sheath cell?
Where is it located?
A
- provides protection for xylem and phloem
- looks similar to the outside of a vein
- circular in structure, located in the middle of the cell
4
Q
What is xylem?
Where is it located?
A
- skinny tube/wire looking things
- Used to transport water
- located inside bundle sheath cell (vein looking thing)
5
Q
What is phloem?
Where is it located?
A
- skinny tube/wire looking things
- Used to transport food and nutrients
- located inside bundle sheath cell (vein looking thing)
6
Q
What is a guard cell?
Where is it located?
A
- it open and closes stoma to prevent water loss
- located at the bottom of the cell
7
Q
What is the stoma?
Where is it located?
A
- it’s like the “nose” of the cell
- has pores for gass exchange
- ONLY found on the bottom of the cell
8
Q
How do guard cells work?
A
- they change shape to open or close
- the thicker, inner walls of the cell stretch less to create a concave shape
9
Q
What is the stroma?
Where is it located?
A
- different than stoma
- viscous fluid, like the plant version of cytoplasm
- found in the chloroplats
10
Q
What are thylakoids?
Where is it located?
A
- flaten discs where the chlorophyll is made
- thylakoids is the name for the entire stack of these discs called granum
- found in chloroplats
11
Q
What is a granum?
Where is it located?
A
- one single disc of a stack of ganum, called thylakoids
- found in chloroplasts
12
Q
What is lumen?
Where is it located?
A
- it’s the fluid inside thylakoids
- found in chloroplats
13
Q
What is chlorophyll?
A
Pigment that particpates directly in photosynthesis
14
Q
What is a porphyrin ring?
Where is it located?
A
- head of chlorophyll molecule
- absorbs light
- begins the process of photosynthesis
15
Q
What does the hydrocarbon tail do in the chlorophyll molecule?
A
It anchors the chlorophyll to the thylakoid membrane
