Pollution
Stems and Tissues
Growth and development
Leaves
Seeds
200

Smokestacks and car exhaust contribute to this type that is emitted with precipitation.

What is acid rain?

200

This is where photosynthesis occurs in cacti.

What are stems?

200

Fruits come from this part of the plant.

What is the flower?

200

This is the process of losing leaves in the fall.

What is abscission?

200
Seeds are formed when this is fertilized.

What is an ovule?

400
These come from coolants and aerosol sprays.

CFCs

400

The type of wood is found in the center of tree trunks and has little function.

What is heartwood?

400

This is the name of a type of plant that only grows for 1 year and then dies.

What are annuals?

400
The pigment that decreases allowing other colors to show in the fall.

What is chlorophyll?

400

What is a plant that comes from one seed leaf?

What is a monocot?

600
This is thinning due to aerosol sprays and coolants, decreases UVB protection.

What is the Ozone layer?

600

This is the process of looking at tree rings and discovering weather patterns from the past.

What is dendroclimatology?
600

This type of hormone inhibits growth, helping to regulate the process.

What is ABA (abscisic acid)?

600

This substance contributes to the protective cuticle in a leaf.

What is cutin?

600

the male part of the flower.

What is the stamen?

800

This is where photosynthesis is most efficient.

What are rainforests?

800

This controversial product from plant tissues is available for approved medical use only in Mississippi.

What is THC/cannibis?

800

This is the process of cells being specialized for specific functions.

What is differentiation?

800

These attract pollinators.

What are bracts?

800

Two ways seeds avoid infiltration by water

What are Inflatable sacs, waxy coverings?

1000

This is why oceans are acidic.

What is absorption of CO2?

1000

The cork cambium helps produce this part of a tree.

What is the bark?

1000

This is the hormone that is responsible for senescence.

What is ethylene?

1000

Pigment found in leaves that absorbs red light.

What is phytochrome?

1000

This is the idea by Charles Darwin where an overabundance of offspring is produced to ensure plant survival.

What is overproduction?