Quiet Ball

Semester Exam Review 7th grade

Why do ecosystems not need a constant supply of matter?

Because matter is constantly recycled

How do organic compounds differ from inorganic compounds?

All organic compounds contain Carbon

What is the land called that drains water into tributaries?

Watershed

What is the source of energy in a food

web? The Sun

What can cause erosion to occur?

Wind Water Ice

When identifying an organism using a dichotomous key, how many choices

should be with each step?

Two

How is energy transferred during photosynthesis?

Solar radiant energy is transformed into chemical energy.

Give examples of physical

weathering. Ice wedging cracks in sidewalks/roads Root pry Rock chipping glass in a windshield Peeling of paint from constant rain

What are examples of tropisms – things plants will respond

to? Gravitropism (Geotropism) – response to gravity Phototropism – response to light Thermotropism – response to temperature

What does a secondary

consumer eat? A primary consumer which eats only plants Also called a herbivore *Be able to identify primary and secondary

consumers in a food web, chain, or pyramid

What is the order of ecological organization

beginning with organism?

Organism, population, community, ecosystem, biosphere

What is the pioneer species in primary

succession? Lichens

What belongs in the energy pyramid?

A = producers B = primary consumers C = secondary consumers A = 100% autotrophs B = 10% herbavores C = 1% carnivores

A

B

C

In a food web, what do plants provide

for the consumers? Energy

When an animal eats a plant, what

happens to the sugar?

The chemical energy gets converted into others forms of energy

What other catastrophic events are associated with

an earthquake? Landslide/avalanche Volcano – Wild Fire Tsunami

What do Fungi, Vultures, and bacteria

have in common? They recycle dead organic material

What is the smallest level of ecological

organization? Organism – an individual member of a

species

What color fur will allow a rabbit to

survive in an Arctic climate and why?

White fur – so it can hide from predators

How do most birds react to seasonal

change? They Migrate

If dark moths have an advantage in hiding from predators what

makes them most FIT? Dark moths have a better chance of

surviving to produce dark-colored offspring and dark moths will become more abundant.

What type of water will not affect

oceans after a rain? Groundwater – this water seeps into

the ground and gets stored in aquifers.

What is most likely to grow on bare rock

after a volcanic eruption?

Lichens

Having more species in an area

will result in?

More links in food chains and more stability

More habitats for different species

Having a variety of ecosystems would

lead to?

It is a mixture of two parents ½ genes come from each parent They exhibit traits from both parents Leads to more diversity

If organisms have two parents, what could you say about the

offspring?

Sharp claws Sharp pointed teeth

What adaptations would you find in a

predator?

GG x gg

If a brown rat and a white rat have only brown babies

what are the most likely genotypes of the parents?

What restricts the exploration of our solar system the

most.? The cost

25 percent

If Gg xGg cross what percent is

likely to be white?

Genes

What is found within a chromosome and has information about particular hereditary traits?

Blonde or brown

If a father has blonde hair and mother has brown, what are the possible hair color of

the children?

What characteristics

allow life to live on Earth?

The presence of water Proximity to the sun Composition and existence of an

atmosphere