Plamt Cell Organisation Flashcards
List the tissues that make up a leaf
- Epidermal
- mesophyll
- xylem
- phloem
Explain how the structure of the upper epidermal tissue in a leaf is related to its function
- covered with a waxy cuticle helps reduce water loss
- transparent
What is the function of the phloem?
To transport food substances
What is transpiration?
Loss of water from the plant
How could you measure the rate of transpiration?
With a potometer
Name the type of cell that helps open and close stomata
Guard cells
Describe the characteristics of a meristem tissue
Meristem tissue is found at the growing tips of roots and shoots and is able to differentiate in lots of different types of plant cell
Which layer of plant tissue contains lots of chloroplasts?
Palisade mesophyll tissue
Stay at the four main factors that affect the rate of transpiration implants
- light intensity
- temperature
- air flow
- humidity
Which type of plant you compounds as a basis for diffusion of gases?
Spongy mesophyll tissue
Name the vessels that transport water and minerals from the roots of the plants to the leaves
Xylem vessels
Describe the structure of the phloem
In
Describe the structure of the xylem
They are made of dead cells joint end to end
with no end walls between them and therefore hold down the middle
there strengthened with a material called lignin
Name the process of water transport through the plant
Transpiration
What type of transport vessel does the cell sap come from?
Phloem
Explain how the structure of the transport vessels is adapted to their function
There are made of columns of elongated living cells with small parts in the end walls
to allow so stop to flow through them
Name the movement of cells sap through the plants transport vessels
Translocation
Epidermal tissue
This covers the whole plant
Palisade mesophyll tissue
This is the part of the leaf when was photosynthesis happens
Spongy mesophyll tissue
This is also in the leaf and contains biggest basis to allow gases to diffuse in and out of
Xylem and phloem
They transport things like water minerals and food around the plant
Meristem tissue
This is found at the growing tips of shoots and roots and is able to differentiate into lots of different types of plant cell allowing the plant to grow
How is the palisade layer adapted to its function?
It has lots of chloroplasts
this means they are new to the top of the plant where they can get me a
What do Phloem tubes transport?
Food
What do xylem tunes take up ?
Water
What is phloem tube made of
Columns of elongated living cells with small paws in the end walls to allow cells up to flow through
What is the transpiration stream?
The movement of water from the roots through the xylem and out of the leaves
What is translocation
The transport of food substances made in the leaves to the rest of the plant for immediate use of storage
in both directions
What causes transpiration?
Evaporation and diffusion of water from a plant service
How does light intensity affect the rate of transpiration?
The brighter the light the greater the rate of transpiration
How does temperature affect the rate of transpiration?
The warmer it is the faster transpiration happens
because the water particles have more energy to evaporate and a fuse out of the stigmata
How does airflow affect the rate of transpiration?
The better the airflow around the leaf the greater the transpiration rate
How does humility affect the rate of transpiration?
That Drier the air around and leave the faster transpiration happens
