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A textbook states, “Each plant tissue performs only one specific function”. What questions would you ask to critically examine the correctness of this statement? What examples of tissues would you take to find out the answers to these questions?
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Parenchyma —
stores food AND
photosynthesises
“a
LINE
Epidermis —
protects AND helps
transpiration/absorption
One tissue can do
several jobs
So ‘only one function’
is too simple
View Answer
I would ask: "Does any single tissue do more than one job?" and "Can the same job be shared by more than one tissue?"
Examples: parenchyma both stores food and does photosynthesis in green parts, so it has more than one function. The epidermis protects and also helps in transpiration and absorption. These show the statement is too simple — one tissue can do several jobs.
Does One Tissue Do Only One Job?
Ask: can one tissue do many jobs?
Parenchyma stores food and photosynthesises.
↓
Ask: can one job be shared?
Support comes from collenchyma and sclerenchyma.
↓
So the statement is not fully correct
