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Science 7A > Unit Three > Flashcards

Unit Three Flashcards

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Biology 101 flashcards
1
Q

Plants are used by humans for….

A

Food and Fibre

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2
Q

Definition: Fibre

A

Tissue of a plant

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3
Q

Other uses for plants are…(4)

A

Prevention of erosion
Cleaning and filtering water
Shelter
Using carbon dioxide and giving off oxygen

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4
Q

–% of the worlds food supply is based on seven crops.

A

75

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5
Q

What seven crops is the food supply in the world?(7)

A 
Wheat 
Rice
Maize(Corn)
Potatoes
Barley
Cassava
Sorghum
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6
Q

What comes from a cocoa tree?

A

Chocolate

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7
Q

What comes from Canola?

A

Vegetable Oil

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8
Q

What comes from Seaweed?

A

Ice cream and yogurt

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9
Q

What comes from sugar beets?

A

Sugar

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10
Q

Examples of plants and fibre are…(3)

A

Cotton
Hemp
Flax

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11
Q

There are more than —- medicines today made from plants.

A

7000

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12
Q

Morphine=

A

Opium poppies and pain killers

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13
Q

Aspirin=

A

White willow bark

Pain relief

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14
Q

Quinine=

A

Cinchona trees

Prevention of Malaria

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15
Q

Plants are also used for…

A

Fuel

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16
Q

Definition: Plant roots

A

Often the tip of the iceberg

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17
Q

What do roots do?(3)

A

Anchor the plant
Absorb water and minerals
Store food for the plant

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18
Q

Definition: Taproot

A

A single root with many more small roots coming out of it. Goes deep into the ground.

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19
Q

Definition: Root hairs

A

Tiny hairs that cover the small roots coming out of a taproot, they also increase the area the plant can absorb nutrients from

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20
Q

Definition: Fibrous roots

A

Small similar roots that soak up moisture

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21
Q

These are edible roots…(5)

A 
Carrots
Beets
Turnips
Radishes
Parsnip
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22
Q

The difference between diffusion and osmosis is…

A

Osmosis is the movement of water, diffusion is the movement of water and gas

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23
Q

Definition: Differentially Permeable membrane

A

Let’s some through but some not

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24
Q

Function of a stem are…(3)

A

Transport water and nutrients
Provide support
Food storage

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25
Q

Types of stems are…(4)

A

Tuber(potato)
Corn(crocus)
Rhizomes(cattails
runner(Strawberry)

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26
Q

Definition: Leaves

A

The energy producers of the plant

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27
Q

Why are leaves green?

A

They are green because of the chlorophyll in them(from the pigment)

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28
Q

Definition: Chlorophyll

A

The pigment in plants that make them green.

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29
Q

Definition: Respiration

A

The process of plants releasing co2 and taking in o2 Always at night

30
Q

Definition: Genes

A

The part of a cell that controls plants characteristics

31
Q

Definition: Asexual and vegetative reproduction

A

Grafting
Layering
Cutting

32
Q

Definition: Pollination

A

The process of pollen traveling to a female cone

33
Q

Definition: Flowers

A

Job is to attract insects that will spread the plant pollen to other plants

34
Q

The parts of a flower are…(7)

A 
Ovule
Stamen 
Pistil
Petals 
Sepal
Stigma
Style
Ovary
35
Q

The stigma is…

A

Sticky tip of the pistil that catches pollen

36
Q

Definition: Style

A

The tube connecting the stigma and the ovary

37
Q

The ovary is…

A

A tiny chamber that holds the ovules(eggs)

38
Q

What is a ovule

A

An egg

39
Q

A stamen is…

A

Male part of a flower

40
Q

A pistil is…

A

Female part of a flower

41
Q

A petal is…

A

Usually brightly coloured

42
Q

A Sepal is…

A

The green part found underneath the flower.

43
Q

Each stamen has two parts the—-and the——.

A

Filament

Anther

44
Q

The filament is…

A

The stalk

45
Q

The anther is…

A

The tip, it produces pollen.

46
Q

The first step of pollination is…

A

The pollen grain lands on the stigma.

47
Q

The second step of pollination is…

A

A pollen tube grows down the style into the ovary and enters a ovule

48
Q

The third step of pollination is…

A

The sperm travels down the tube to fertilize the egg

49
Q

once a plant is pollinated, a—-is formed

A

Seed

50
Q

Inside seeds is a l

Tiny living plant called an…

A

Embryo

51
Q

Definition: Fruit

A

A growing ovary of a plant.

52
Q

How are seeds are dispersed?(3)

A

Wind and water
Carried by animals and insects
Machines used by humans

53
Q

Definition: Sustainability

A

Being able to grow food and fibre while keeping our natural systems healthy.

54
Q

Crops in Alberta are…(8)

A 
Specialty crops
Alfalfa
Potatoes
Canola
Legumes
Oats
Barley
Wheat
55
Q

Definition: Irrigation

A

Watering crops by pipes and sprinklers

56
Q

Definition: Monoculture

A

Growing only one type of plant in a field

57
Q

Definition: Erosion

A

Soil that is blown away by wind and water

58
Q

Definition: Desertification

A

As result of a drought, desert takes over agricultural land

59
Q

Five main factors for soil development are…(5)

A 
Parent material
Vegetation
Landscape
Climate
Time
60
Q

Definition: Humus

A

Very fertile land, holds water very well

61
Q

Four things that break down dead organisms are…(4)

A

Bacteria
Fungi
Microscopic actinomycetes
Earthworms

62
Q

Healthy plants require these six nutrients.(6)

A 
Nitrogen
Calcium
Potassium
Magnesium
Sulfur
Phosphorous
63
Q

Salty soil is caused by…

A

Too little vegetation and to much water

64
Q

Soil erosion is caused by…

A

To much cultivation

65
Q

Definition: Hydroponic technology

A

Growing plants without dirt.

66
Q

Why are dandelions plant pests?(5)

A 
Powerful roots
Broad leaves
Super seeds
Adaptable
Chemical weapons
67
Q

Definition: Introduced species

A

A species that is not common in the area

68
Q

Pests can be controlled by…(4)

A

Herbicides
Pesticides
Insecticides
Fungicides

69
Q

Definition: Organic food

A

Food grown without the use of pesticides or chemical fertilizers

70
Q

Other methods that can replace “cides” are…(5)

A 
Biological control
Cleaning equipment
Cutting weeds
Removing weeds
Sowing

Science 7A (12 decks)

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