B4///2 Flashcards
What is epidermal tissue
Tissue which covers the plant
What does palisade mesophyll contain
Lots of chloroplast
What does palisade mesophyll do
Photosynthesise
What does spongy mesophyll have
Many stomata and large surface area
Why does spongy mesophyll have a large surface area and many air spaces
To carry out diffusion of gases
Give 3 examples of plant organs
Stems roots and leaves
Practice labelling a leaf
Practice labelling a leaf
What is translocation
Phloems carry sugars from the leaves to rest of plant
What are stomata
Tiny holes in a leaf where gas diffuse in and out of
What control stomata
Guard cells
What is transpiration
The loss of water vapour from inside a plant from the surface of its leaves
What are some factors affecting transpiration
Temperature
Humidity
Light intensity
What does a magnesium deficiency do to a plant
Chlorosis- lack of chloroplast
What colour is a plant lacking magnesium
Yellow leaves
What does a nitrate deficiency do to a plant
Stunted growth as nitrates are needed for protein synthesis
