Translocation

What are the soluble products of photosynthesis?

Sugars (mainly sucrose) and amino acids, collectively referred to as cell sap

What is translocation?

Movement of sucrose and amino acids produced in photosynthesis to all the other parts of the plant for respiration and the other processes. Occurs in phloem vessels, requiring energy.

Sieve tubes in the phloem?

Speciaalised for transport and have no nuclei, each sieve tube has a perforated end so its cytoplasm connects one cell to the next

Companion cells in the phloem?

Transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy. A sieve tube is completely dependent on its companion cells

Which tissues are removed by tree ringing?

Phloem

Suggest a purpose for ringing fruit trees in summar after fruit has set?

Keeps sugar in the fruit, encouraging sugar in the fruit, to prevent sugar going down so phloem is cut

Why don’t trees die after being ringed

Xylem is still intact therefore water can be transported so it doesn’t die