Question
The shown below is a tissue found in plants
a) Give the function and identity of the tissue above
b) Identify the parts of the tissue labelled as :
i) A
ii) D
c) Name the structure that links part labelled B to that labelled D
d) Give THREE adaptations of the tissue shown above to its function
Answer
a) Phloem-: Translocation or Transport food from leaves to the other plant parts
b)
i) A - Sieve plate
ii) B - Companion cell
d)
- D has numerous mitochondria that generate a lot of energy to be used in translocation process, the sieve filaments are contractile to enhance movement of organic materials or food molecules
- D has dense cytoplasm for storage of a lot of carbohydrates that are oxidized to supply energy for translocation, Plasmodesmata allow movement of materials between cell D and sieve tubes
- Sieve plates have sieve pores for passage of food materials from one sieve tube to the next
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