Unit 2 Flashcards

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1
Q

What are the two ways plants can reproduce?

A

Asexual and sexual reproduction.

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2
Q

What are the functions of roots?

A

They store food, support, and anchor the plant.

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3
Q

What are the functions of stems?

A

They support the plant, transport food, and store food.

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4
Q

What is the function of leaves?

A

They make the plants food.

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5
Q

What are the functions of flowers?

A

Attract insects to help pollinate and contain male and female parts.

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6
Q

What is the process of photosynthesis?

A

The chlorophyl in the leaves of a plant capture the sunlight. The plant uses the sunlight and combines it with carbon dioxide and water to create sugar, which it uses as food.

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7
Q

What is transpiration?

A

The process in which water that s taken in by a plant or animal evaporates fro the organism.

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8
Q

Define respiration.

A

A process in which plants release carbon dioxide and let in oxygen.

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9
Q

What are the three stages of a seed plant?

A

Seed, seedling then adult.

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10
Q

How do seed plants reproduce?

A

Through pollination.

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11
Q

What are two ways that humans help plants grow?

A

Greenhouses and hydroponics.

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12
Q

Define osmosis.

A

The diffusion of water through a semi-perneable membrane .

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13
Q

Define diffusion.

A

the tendency of particles in a gas or liquid spread event. Moving from points of high concentration to low concentration.

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14
Q

What are three things that humans use plants for?

A

For food, for clothes, for furniture.

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15
Q

What is soil made up of?

A

Non-organic and organic matter

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16
Q

What is humus?

A

The rich soil made up of decomposed plant and animal matter.

17
Q

What are shelter belts?

A

Shelter belts are plants that protect the soil from wind erosion.

18
Q

What is saltinization?

A

When the soil is to salt for most plants to grow.

19
Q

What is selective breeding?

A

A process that involves choosing specific plants with particular characteristics and encouraging them to reproduce.

20
Q

What is genetic engineering?

A

the process of changing the genes in an individual plant cell to give the plant specific characteristics.

21
Q

What are herbicides?

A

They kill unwanted plants.

22
Q

What are insecticides?

A

They kill unwanted insects.

23
Q

What are pesticides?

A

They kill unwanted pests.

24
Q

What is a monoculture?

A

The limiting of one crop to a particular area.

25
Q

What is a biodiversity?

A

A number of different organisms.

26
Q

What are the two types of roots?

A

Taproot and fibrous root.