Topic 2 Plant Cell Organisation + Flashcards

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1
Q

What are plant organs made of

A

Tissues

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2
Q

What is the epidermal tissue

A

Covers the whole plant

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3
Q

What is the palisade mesophyll tissue

A

Part of the leaf where photosynthesis happens

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4
Q

What is spongy mesophyll tissue

A

Contains big air spaces to allow gases to diffuse in and out of cells

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5
Q

What are the phloem and xylem

A

They transport things like water, minerals and food around the plant (through roots stems and leafs)

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6
Q

What is the meristem tissue

A

Found at the growing tips of shoots and roots and is able to differentiate into lots of different types of plant cells allowing the plant to grow

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7
Q

What is the waxy cuticle for

A

Covers the epidermal tissue to help reduce water loss by evaporation and stops the sun from damaging the plant

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8
Q

Why is the upper epidermis transparent

A

So that light can pass through it to the palisade layer

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9
Q

Why does the palisade layer have lots of chloroplasts

A

Because it’s where photosynthesis takes place and is near the Top of the leaf so can get lots of light

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10
Q

What do the phloem and xylem form

A

A network of vascular bundle which deliver water and other nutrients to the entire leaf and take away the glucose produced by photosynthesis
They also support the structure

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11
Q

What are the tissue of the leaf adapted for

A

Efficient gas exchange
The lower epidermis is full of holes called stomata which let out CO2 diffuse directly into the leaf

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12
Q

What is the opening of the stomata controlled by

A

Guard cells

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13
Q

What do the air spaces in the spongy mesophyll tissue increase

A

The rate of diffusion of gases

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