Mineral Salts And Transporting Food
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Plants need mineral _____ or _____. For instance, _____ are needed to make proteins.
Salts Nutrients Nitrates
There is a _____ solution of these salts in the water in the soil. Often salts are taken up even though there are _____ in the soil than are in the root.
Weak Less
How are salts taken up?
By active transport. Active transport can collect salts against a concentration gradient. This needs energy from respiration.
Why do root hairs give a large surface area?
For taking up mineral salts
There are many air spaces in the ______. ________ passes from this air into the root hair too.
Soil Oxygen
How are mineral salts carried up to the leaves?
With water in xylem vessels
What is active transport?
Uptake of molecules or ions, against a concentration gradient, using energy from respiration.
What are the soluble products of the food made in photosynthesis?
Sugars Amino acids Fatty acids
These soluble food products are carried to all parts of the plant in solution in the ______. This is often called ______.
Phloem Translocation
Xylem are _____ tubes but phloem is ____ tissue.
Dead Living
How do substances move in the phloem?
Active transport
The plant cells have to use energy to move the ______ substances along.
Dissolved
Where does food in a plant end up?(5)
• sugars are changed into starch and stored in the root cortex and in seeds • sugars also form cellulose for new cell walls at the growing root tip and shoot tip • sugars are also transported to the fruits. • amino acids make proteins needed to make new cells • fatty acids form fats that are stored in many seeds