Growth Flashcards

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1
Q

What is growth?

A

Growth is an increase in size, length and mass. It is achieved with an increase in number of cells.

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2
Q

What does growth involve? (3 types of cell functions e.g. Cell __)

A

Cell differentiation, cell division & cell elongation.

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3
Q

Which cell process for growth only occurs in plants?

A

Cell elongation.

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4
Q

What is CELL DIFFERENTIATION?

A

Cells are specialised in order to complete different tasks. There is one type of cell which scientists can use in order to make any cell. It is a STEM CELL.

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5
Q

What is CELL DIVISION?

A

Cells need to divide in order to grow and repair themselves. The process is called MITOSIS.

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6
Q

What is CELL ELONGATION?

A

Where a plant cell expands, making it bigger and so the plant grows. ONLY HAPPENS IN PLANTS! The hormone that causes this to happen is called the AUXIN.

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7
Q

What are Meristems?

A

A group of cells at the tip of the roots and shoots where mitosis happens. It enables the plant to grow.

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8
Q

Where does growth occur in plants?

A

Mainly at shoot and root tips and in special growth zones like buds.

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9
Q

Where does growth occur in animals?

A

New cells can be made by most tissues.

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10
Q

How does growth occur in plants?

A

Size increase is often caused by increasing the size (elongation) of cells by absorbing water into the vacuole.

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11
Q

How does growth occur in animals?

A

Size increase is brought about by increasing the number of cells.

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12
Q

Which cells are specialised in plants?

A

Most plant cells can differentiate into different cell types.

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13
Q

Which cells are specialised in animals?

A

Only stem cells can differentiate into different cell types. Other animal cell functions remain fixed.

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