Leaf Structure Notes
Leaf Structure Notes
Terms
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- Spongy Layer
- lower portion in a leaf, irregular shaped, chloroplast- filled cells and separated by air spaces
- pores
- Stomata are _______ which open and close automatically.
- Palisades Layer
- main section contains chloroplasts that carry out photosynthesis (does not have all chloroplast though)
- limit
- The cells in the epidermis make wax which covers the leaf surface, especially the top surface. This is to _________ water loss.
- transpiration stream
- stomata allow water to escape- this is how the ______________ comes about.
- Guard Cells
- At night, stomata closes
- Xylem
- _________ and phloem vessels cover the whole leaf like tiny 'vines', to deliver water to every part of the leaf and then to take away the food produced by the leaf.
- chloroplasts
- The cells in the palisade layer are packed with ___________ which contain lots of chlorophyll.
- Guard Cells
- When closed, they are protecting the leaf from drying out. Under these conditions, gas exchange is limited and photosynthesis slows down because little CO2 is available
- phloem
- Xylem and ___________ vessels cover the whole leaf like tiny 'vines', to deliver water to every part of the leaf and then to take away the food produced by the leaf.
- Epidermis
- protective tissue that forms the outer layer of the leaves stems and roots.
- flaccid
- Cells ________, pore closes.
- wax
- The cells in the epidermis make _______ which covers the leaf surface, especially the top surface. This is to limit water loss.
- Phloem
- vascular tissue that conducts food and other dissolved materials throughout the body of the plant
- lower epidermis
- contains the guard cells
- dry up
- Stomata close automatically when supplies of water from the roots start to ______ _____.
- opens
- Cells turgid, pore ________.
- epidermis
- The cells in the ____________ make wax which covers the leaf surface, especially the top surface. This is to limit water loss.
- chlorophyll
- The cells in the palisade layer are packed with chloroplasts which contain lots of _____________.
- Guard Cells
- Found in pairs
- turgid
- Cells ______, pore opens.
- Cuticle (waxy layer)
- the transparent layer that covers the plants epidermis (prevents the loss of water)
- Guard Cells
- When open, they allow gas exchange between the leaf and the environment
- vines
- Xylem and phloem vessels cover the whole leaf like tiny '_______', to deliver water to every part of the leaf and then to take away the food produced by the leaf.
- Guard Cells
- In daytime, walls curve inward creating a space between the cells
- Guard Cells
- Found in lower epidermis
- Xylem
- vascular tissue that conducts water and minerals from the roots upward through the plant and helps support the plant
- water
- Xylem and phloem vessels cover the whole leaf like tiny 'vines', to deliver _________ to every part of the leaf and then to take away the food produced by the leaf.
- Guard Cells
- Pairs of specialized epidermis cells that regulate the opening and closing of the stomates
- upper epidermis
- prevents water loss and allow light to pass into the leaf
- palisade layer
- The cells in the ______________ are packed with chloroplasts which contain lots of chlorophyll.
- closes
- Cells flaccid, pore _______.
- stomata
- The lower surface is full of tiny little holes called ____________. They are there to let CO2 in.