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Plant Tissues — Permanent

Permanent tissues are plant tissues whose cells have usually lost the power of division and are specialised for particular functions.

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Student-friendly explanation

Simple permanent tissues include parenchyma, collenchyma, and sclerenchyma. Complex permanent tissues include xylem and phloem, which contain more than one cell type and perform transport.

How to write this in exams

  1. 1

    Start with the exact idea

    Permanent tissues are plant tissues whose cells have usually lost the power of division and are specialised for particular functions.

  2. 2

    Then show how to use it

    Identify whether the tissue mainly stores, supports, strengthens, or transports; then name the tissue and add one location.

  3. 3

    Add one concrete example

    Xylem carries water and minerals from roots to other parts, while phloem transports prepared food from leaves.

  4. 4

    Avoid this incomplete answer

    Writing 'phloem transports water' is wrong because phloem mainly transports food prepared by leaves.

Definition

Permanent tissues are plant tissues whose cells have usually lost the power of division and are specialised for particular functions.

Example

Xylem carries water and minerals from roots to other parts, while phloem transports prepared food from leaves.

Rule to remember

Classification rule: simple permanent tissue has one main type of cell; complex permanent tissue has different cell types working together.

Memory hook

Xylem gives water; phloem gives food.

Examples and method

Worked example

If a ring of bark containing phloem is removed from a stem, food transport downward is affected, showing that phloem carries food.

Method to apply

Identify whether the tissue mainly stores, supports, strengthens, or transports; then name the tissue and add one location.

Diagram support

Use labelled sketches of parenchyma, collenchyma, sclerenchyma, and a flow diagram showing xylem for water and phloem for food.

How CBSE asks it

Exams may ask differences between parenchyma, collenchyma, and sclerenchyma, or ask why xylem and phloem are complex tissues.

Avoid common mistakes

Common confusion

Students often mix xylem and phloem functions or write that all permanent tissues are dead.

Common wrong answer

Writing 'phloem transports water' is wrong because phloem mainly transports food prepared by leaves.

Exam tip

For comparison answers, write tissue name, cell nature, location, and function in columns.

Quick check

Why are xylem and phloem called complex tissues?

Xylem and phloem are called complex tissues because each is made of more than one kind of cell working together for transport.

Study the plant tissues — permanent diagram carefully

Use the labelled diagram to keep plant tissues — permanent clear in short answers and revision.

What this diagram makes clear

This diagram keeps the labels and direction of plant tissues — permanent in the right order.

Where this helps in exams

Use this for labelled diagram work and short exam answers on plant tissues — permanent.

Revision cue

Revise plant tissues — permanent through the labels before writing the answer.

Answer writing and exam use

1-mark answer

Permanent tissues are plant tissues whose cells have usually lost the power of division and are specialised for particular functions.

2-mark answer

Permanent tissues are plant tissues whose cells have usually lost the power of division and are specialised for particular functions. Classification rule: simple permanent tissue has one main type of cell; complex permanent tissue has different cell types working together. Xylem carries water and minerals from roots to other parts, while phloem transports prepared food from leaves.

3-mark answer

Simple permanent tissues include parenchyma, collenchyma, and sclerenchyma. Complex permanent tissues include xylem and phloem, which contain more than one cell type and perform transport. Classification rule: simple permanent tissue has one main type of cell; complex permanent tissue has different cell types working together. If a ring of bark containing phloem is removed from a stem, food transport downward is affected, showing that phloem carries food. Exams may ask differences between parenchyma, collenchyma, and sclerenchyma, or ask why xylem and phloem are complex tissues. Writing 'phloem transports water' is wrong because phloem mainly transports food prepared by leaves.
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