Transport In Plants Flashcards

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1
Q

Lignin

A

Lignin is very strong and it’s used to thicken xylem vessel walls answer xylem vessels held to support Plans by keeping them up right

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2
Q

What is wood made of

A

What is almost completely composed of lignified xylem

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3
Q

Structure of phloem tubes

A

Phloem tubes I made up cells joined end to end

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4
Q

Companion cells

A

These are cells located right next to sieve tube elements and probably controls both cells

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5
Q

Vascular boundaries

A

Vascular boundaries are made up of bundles of xylem vessels and phloem cubes close together.

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6
Q

Movement of water through a plant

A

Water present in the soil moves into root hairs by osmosis

What’s that is sent up the plant by xylem vessels and into leaves for photosynthesis.

Water is diffused into the air by the leaves

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7
Q

Transpiration in plants

A

The evaporation of water from the surface of leaves creates a pull of water through the plant

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8
Q

Adhesion

A

This is the attraction between water molecules and the surface

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9
Q

Cohesion

A

The attraction which makes water molecules tend to stick together

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10
Q

Capillarity

A

Water molecules stick together on two surfaces of Naruto tubes and the water rises up the tube.

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11
Q

Root pressure

A

Water constantly moves into Roots by osmosis because of the presence of sugars and other dissolved substances in The Roots

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12
Q

How does water move in a plant

A

Water moves from high pressure in the roots to low pressure in the leaves

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13
Q

Transpiration rate

A

The faster the transpiration rate the faster the plant takes up water

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14
Q

Factors affecting transpiration rate

A

Temperature- with high temperatures transpiration rate increases

Humidity- transpiration decreases as humidity increases because the concentration gradient of water between the air spaces on the outside air is low on the rate of evaporation of water through the stoma is slow

Air movement- transpiration increases as wind speeds increase because water vapor is carried away rapidly

Light intensity- during a brightly the stoma is fully opened Woodstock, fully opened the rate of transpiration can be High

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15
Q

What are xerophytes

A

These are plants that live in places where water is short in Supply

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16
Q

Mesophites

A

These are plants that live in areas where water is readily available

17
Q

Hydrophytes

A

These are plants that live in very wet, freshwater environments

18
Q

Halophytes

A

Plants that live in water with the high concentration of salt

19
Q

Adoptions of xerophytes

A

Find spine like leaves to reduce the number of stoma

Thickened stems or leaves capable of storing large amounts of water

An extensive root system to absorb water quickly when it rains

A thickened epidermis covered with a thick waxy cuticle

The availability to trap carbon dioxide at night so that the stoma can be closed during the day

Are the features such as strong consumer, who leaves and interlocking hairs

20
Q

Translocation

A

The transport of organic food through a plant