Plants

By eating insects

By absorbing light energy

By drinking minerals

By sleeping at night

Stem

Leaves

Roots

Flowers

It grows very tall

Its leaves turn yellow

It makes too much sugar

It produces more flowers

It provides oxygen and food

It makes the ground soft

It keeps the animals warm

It provides water for them to drink

Having a very thick stem

Having many stomata for gas exchange

Growing deep underground

Having bright red flowers

The whole leaf

Only the white areas

Only the green areas

Neither the green nor the white areas

There is too much carbon dioxide and it is hurting the plant

The plant has enough light but cannot go faster because it needs more CO2

The carbon dioxide is making the plant grow too many leaves

The plant is producing too much oxygen

Step 1: Light hits the leaf

Step 2: Chlorophyll absorbs the light

Step 3: Water and $CO_2$ react to form glucose

Step 4: Starch is stored in the roots

At midday, when photosynthesis is at its peak.

At sunset, when the sun just goes down.

Just before sunrise, after a night of only respiration.

At midnight, when the plant is most active.

Conversion into starch for storage.

Conversion into cellulose for building cell walls.

Conversion into fats for the cell membrane.

Conversion into enzymes for digestion.

Very large stomata

A thick waxy cuticle

No xylem

No chlorophyll

Leaf -> Stem -> Root

Root -> Stem -> Leaf

Stem -> Root -> Leaf

Leaf -> Root -> Stem

Osmosis

Evaporation

Melting

Freezing

To stay cool in the wind

To provide a large surface area for light absorption

To make it easier for insects to land

To store lots of water

Roots are too cold for photosynthesis

Roots are underground where there is no light

Chloroplasts would make the roots too heavy

Root cells do not need energy

It consists of hollow, dead tubes

It carries water and minerals upwards only

It is made of living cells called sieve tube elements

It provides the main structural support for the trunk

The xylem and the phloem

The epidermis and the vascular cylinder

The root hair and the soil

The root cap and the meristem

Mineral transport would stop because active transport requires living cells

Mineral transport would speed up because there are no barriers

The plant would start absorbing minerals through the leaves instead

The minerals would be converted into starch to be stored in the soil

Palisade cells optimize light interception; spongy cells optimize gas exchange

Palisade cells store water; spongy cells store food

Palisade cells protect the leaf; spongy cells provide structure

Palisade cells control the stomata; spongy cells transport water

Evaporative cooling through the stomata

The storage of water in the spongy mesophyll

The transparent upper epidermis

The movement of sugars through the phloem

Moisture

The right temperature

Air

Saltwater

A ripened ovary containing seeds

A colorful leaf

The part that makes pollen

The root of a plant

To make sure plants stay in the same spot

To provide food for all animals

To spread the plant to new areas and reduce competition

To help the flower bloom

Deep inside the flower

On long filaments hanging outside

Hidden under the sepals

Inside the ovary

Path 1 is self-pollination, while Path 2 is cross-pollination.

Path 1 and Path 2 both represent cross-pollination.

Path 1 and Path 2 both represent self-pollination.

Path 1 is cross-pollination, while Path 2 is self-pollination.

It is the female reproductive part

It is the male reproductive part

It produces the seeds

It protects the ovules

Self-pollination

Cross-pollination

Wind pollination from the same plant

None of the above

Seed production after self-pollination

The growth of new plants from runners (stolons)

The formation of fruit from an unfertilized ovary

The dispersal of spores by a moss

On the surface of the stigma

Inside the pollen sac

Inside the ovule

At the base of the petal

To produce the sugary nectar

To hold the stigma in the best position to receive pollen

To protect the developing seeds from birds

To attract insects with its bright color

Wind

Gravity

Animals

Rain

Darkness

Light

A very thick testa

Colder temperatures

Water

Insects

Wind

Humans

It decreases as it loses water

It increases as it absorbs water

It stays exactly the same

It becomes zero

Seeds require a very cold environment to begin the germination process.

Increasing the temperature within this range speeds up the germination process.

The temperature of the soil has no impact on how quickly a seed will sprout.

All seeds will germinate in exactly 3 days regardless of the temperature.

A winged sycamore seed in a storm

A dandelion seed with a parachute

A heavy acorn falling from an oak tree

A blackberry seed eaten by a migrating bird

It acts as an entry point for water during germination

It allows the wind to catch the seed more easily

It is where the fruit attaches to the stem

It releases carbon dioxide during dormancy

The seeds would be better at floating on water.

The seeds would be dispersed much more widely by the wind.

The seeds would land closer to the parent plant, increasing competition.

The seeds would be more likely to be eaten and destroyed by animals.

It is the process where the plant starts to release seeds into the air.

It is the initial uptake of water which activates the seed's metabolism.

It is the process of the fruit ripening and becoming sweet.

It is the movement of the seedling toward a light source.

Light is necessary for germination, but only in very small amounts.

The seeds in the dark were likely defective or unhealthy.

For this species, light is not a required condition for germination.

The experiment should be repeated because the results are impossible.