science unit B

Question 1

describe the parts of a seed plant

Answer 1

seed- contains the embryo that will form a new plant
stem- movement of water, minerals + nutrients
roots- absorbs water + dissolved minerals + nutrients
leaves- photo + gas exchange
flowers- contains both female +male parts for reproduction
cones- have separate male + female cones

Question 2

name the parts of a seed plant

Answer 2

seed, stem, roots, leaves, flowers, cones

Question 3

what is the seed plant life cycle

Answer 3

seed —-> seedling —-> adult

Question 4

how can plants reproduce with seeds

Answer 4

cutting + grafting

Question 5

how can plants reproduce without seeds

Answer 5

runners + rhizones

Question 6

what is cutting and what is grafting?

Answer 6

sksksk

Question 7

what is runners and what is rhizones

Answer 7

sksksks

Question 8

name some pollinators

Answer 8

birds, insects, bats

Question 9

whats a pollinator?

Answer 9

are organisms that carry pollen from one flower to another

Question 10

what are the plant needs and growing conditions? (part 1)

Answer 10

plants need different amounts of light (all plants need light in order to photosynthesize and produce food)
plants need different amounts of water
plants need different nutrients (the main nutrients that plants need are nitrogen, phosphorous, potassium, calcium, magnesium)

Question 11

what are the plant needs and growing conditions? (part 2)

Answer 11

plants need different amounts of space

growing healthy plants requires knowing the best growing conditions

Question 12

whats the process of transpiration

Answer 12

the evaporation of water from the surface of the plant-mainly from the leaves

Question 13

whats the process of capillary action

Answer 13

water travels from the roots to the leaves through tiny tubes in the roots and stems

Question 14

whats the process of osmosis

Answer 14

when water from the soil enters root cells which occurs when the conncentration of water in the soil is greater than the conncentration of water in the root of the plants

Question 15

how do plants adapt to their environment in dry environments?

Answer 15

plants have to save as much water as they can

Question 16

how do plants adapt to their environment when they like grasses?

Answer 16

plants like grasses that have narrow thin leaves, so they can get many individuals in one place. (this helps them to be pollinated by the wind)

Question 17

how do plants adapt to their environment like plants such as white spruce trees?

Answer 17

have thin needles like leaves with a thick resin coating. this protects them from drying out

Question 18

some plants have fibrous roots which…

Answer 18

which form a thick mat that gathers water at the upper layers of the soil.

Question 19

have i gone over 4.0 definitions?

Answer 19

you tell me

Question 20

animals produce carbon dioxide and use up oxygen when they breath. how do plants benefit this

Answer 20

plants provide oxygen

Question 21

plants make their own food from water, carbon dioxide, and sunlight. what role is this ?

Answer 21

plants provide food

Question 22

plants protect other organisms from the weather and from predators. what role is this

Answer 22

plants provide shelter

Question 23

dead plant material builds soil. plants also prevent erosion, which is the process that moves soil from one place to another. what role is this?

Answer 23

plants build + protect soil

Question 24

______________________ are connected by what they eat.

Answer 24

all living things or organisms

Question 25

in what ways can plants be used as a resource

Answer 25

for food and for fibre

Question 26

what can plants be used as for fibre

Answer 26

for wooden frames (covered with sheets)

cloth

Question 27

whats a living resource

Answer 27

are things that can be used for human needs

Question 28

soil is made up of 2 type of particles, what are they

Answer 28

mineral particles (in organic) and organic particles

Question 29

what are the 3 types of soil?

Answer 29

sandy soil, clay soil, and loam soil

Question 30

describe sandy soil

Answer 30

runs between your fingers and has very few lumps. if you moisten sandy soil and squeeze it in your hands, the soil will not stay together.

Question 31

describe clay soil

Answer 31

feels slippery when wet. when you squeeze it, it will stay together and form a tight ball. dry clay is very hard.

Question 32

describe loam soil

Answer 32

crumbly like a moist cake. if you squeeze wet loam in your hand, it will form a loose ball. its not sticky

Question 33

What is organic fertilizer? What is chemical fertilizer?

Answer 33

organic - comes from sources such as animals or plant waste

chemical- mixture of chemicals that promote plant growth

Question 34

How can fertilizer be used improperly?

Answer 34

If not measured properly there can be too much nutrients, more than the plant can use. Extra, unused nutrients may dissolve in rain water and pollute the soil.

Question 35

What is irrigation?

Answer 35

Irrigation is the practice of applying water to crops

Question 36

How can improper irrigation be harmful?

Answer 36

too much water added to the soil, it will fill all he pores in the soil. With too little air in the soil plants will not grow well.

Question 37

What are the benefits to clearing the land for agriculture?

Answer 37

Make easy to plant seeds for crops. It also reduces competition between crop plants and other plants.

Question 38

What are the harmful effects of clearing the land for agriculture?

Answer 38

If not carefully done, it can expose soil to the weather. Without plant roots the soil will blow away.

Question 39

How does plowing benefit the soil?

Answer 39

breaks up the soil creating more air spaces and making it less compacted (room for plants to grow)

Question 40

Why is plowing harmful?

Answer 40

it makes the soil particles smaller and soil can become water logged and compacted more easily

Question 41

What is crop rotation?

Answer 41

planting a different crop in particular field every year

Question 42

What is the major benefit of crop rotation?

Answer 42

one plant uses the nutrients that the other doesn’t need

Question 43

what is yield

Answer 43

yield means the amount of useful plant per plants

Question 44

explain selective breeding

Answer 44

you would select two parents, each with a different desired trait and then breed them together (cross-pollination). plant their seeds and select the next-generation of seeds from offspring plants with the desired characteristics

Question 45

what do we mean when we say something is sustainable

Answer 45

when something can be done or used without running out

Question 46

what’s monoculture

Answer 46

the practice of growing only one type of crop in a particular area

Question 47

identify environmental variables that can be controlled in a greenhouse

Answer 47

temperature, irrigation

Question 48

identify two artificial environments discussed during this season

Answer 48

greenhouse + hydroponics

Question 49

species vs varitey

Answer 49

S- living things of the same kind that are able to reproduce
V- a group of organisms of the same species that has specific characteristics that can distinguish it from other varieties of that species

Question 50

what are the consequences of using herbicides and pesticides

Answer 50

herbicides- some weeds are the food source of other living organisms
pesticides- some insects can become resistant and then the pesticide with become less useful

Question 51

environmental effects with pesticides (idk you can skip this question if you want)

Answer 51

the soil will not degrade any further due to pesticide use?

Question 52

economic effects with pesticides (idk you can skip this question if you want)

Answer 52

spend less money on the chemical pesticides?

Question 53

social effects with pesticides (idk you can skip this question if you want)

Answer 53

no chemicals on food should make the food healthier to eat?