Science B5 1

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How do tissues and organs develop?
All cells look the same when newly formed. They then develop into groups of specialised cells called tissues.
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How are plant cells different from animals?
They are different but they are specialised too. Plant cells have cell walls outside the cell membrane, and some have spaces call vacuoles.
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What happens to organs in development?
As an animal embryo or plant grow, groups of tissues arrange themselves into organs. E.G. heart, brain in humans, roots, leaves and flowers.
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What is the heart made up of?
Made up of; muscle tissue, nervous tissue, connective tissue and some fatty tissue.
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Growth patterns of humans?
Humans will probably stop growing taller by the time we hare about 18-20 yrs old.
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Growth patterns of plants?
Flowering plants grow all their life. 1) Stems grow taller. 2) Roots grow longer. 3) Hold themselves upright by most of the stem increase in girth or have some other means of support.
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How do growth patterns work?
for living things to grow bigger, some of their cells must divide to make new cells.
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What are meristem cells?
Plants increase in length by making new cells at the tip of both shoots and roots. Also have rings of dividing cells in their stems and roots to increase girth. These dividing cells are Meristem cells.
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Card 2

Front

How are plant cells different from animals?

Back

They are different but they are specialised too. Plant cells have cell walls outside the cell membrane, and some have spaces call vacuoles.

Card 3

Front

What happens to organs in development?

Back

Preview of the front of card 3

Card 4

Front

What is the heart made up of?

Back

Preview of the front of card 4

Card 5

Front

Growth patterns of humans?

Back

Preview of the front of card 5
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