WorksheetsLife Science 1
Total questions: 69
Worksheet time: 2hrs 3mins
Insecticides are sprayed over a large area in an effort to reduce the number of grasshoppers that are eating the corn plants. How will this change affect this food chain?
The number of grasshoppers will increase
The number of lizards will increase
The number of grasshoppers, lizards, and hawks will decrease
An organism that cannot adapt to changes in the environment will most likely -
produce more offspring
die
A long period with no rain
Earthquake
Flood
Drought
an inherited characteristic that increases an organism's chance of survival
biodiversity
environmental change
adaptation
the possibility a species could become extinct
endangered
mutation
sustainability
When there is higher biodiversity
more organisms are likely to die because they can't adapt to environmental changes.
there is less diversity.
there is more diversity and higher sustainability of life.
High biodiversity is
having a lot of the same organism.
having a few of the same organism.
having a lot of variety of different organisms.
This picture is a great example of ____________ biodiversity.
high
moderate
low
This picture is a great example of ____________ biodiversity.
high
moderate
low
What is the difference between biotic and abiotic?
none of these
Abiotic are living organisms
Biotic is life,
Abiotic is non-living
Biotic is non-living, Abiotic is living
Melting of glaciers and polar ice caps....
will result in cooler temperatures in the Arctic
will result in sea-levels rising
Will have no effect on ecosystems
What is ecological succession?
A slow change in an environment
A change that takes days in an environment
No change
What are examples of pioneer species in a primary succession?
Bushes and Shrubs
Oak trees
Mossess and Lichens
A pioneer species is...
a large organism
the first organisms to adapt to a new environment
Abiotic organisms
What is the most important function of pioneer species?
To create rocks
To create soil and add nutrients to the environment
To look nice
A climax community is ….
the beginning of a new ecological succession.
the rocks in a new environment.
an area that reaches its greatest growing potential.
What is the difference between primary and secondary succession?
Primary succession already has soil.
Primary has soil and secondary does not
primary has no soil and secondary has soil
Why does primary succession take longer to reach climax community?
Because trees do not perform photosyntheses.
Because climax community is in a forrest.
Because primary succession does not have soil
Which is the correct order in primary succession?
Rocks, Lichens & Mosses, Bushes & Shrubs, Trees
Lichens & Mosses, Rocks, Trees, Bushes & Shrubs
Series of changes where an existing community is destroyed
primary succession
secondary succession
What is the order of succession shown in this figure?
A, B, C, D
B, A, D, C
C, D, A, B
What type of succession is shown going from figure A to figure B?
primary succession
ecological succession
secondary succession
What is a producer?
an organism that gets energy from eating other organisms
an organisms that uses sunlight to make its own food
an organism that gets energy from eating dead organisms, non-living material or waste
An organism that gets energy from breaking down dead organisms, non-living material or waste
producer
consumer
decomposer
The arrows in a food chain or web represents what?
They point to the organism that is being eaten.
It shows how sunlight flows within an ecosystem.
They show what direction the energy is flowing between organisms.
In this food chain, what will happen if the frogs become extinct?
The snakes will increase.
The grasshoppers will decrease.
The grasshoppers will increase.
Which of the following organisms is a carnivore.
greenfly
plant
mouse
buzzard
The owl receives energy from which organisms?
grasshopper and mouse
mouse and rabbit
rabbit and butterfly
Name the producers in this food web.
seagull and fish
penguin and crab
phytoplankton and seaweed
How many predators does the squid have?
1
2
3
Which consumer receives energy from the leopard seal?
blue whale
penguin
killer whale
How many carnivores are shown in this food web?
6
4
5
The ____________ plays a major role in regulating the weather and climate of the planet.
weather
climate
ocean
Species that form somewhere else that enters and disrupts a native ecosystem
artificial reefs
global warming
invasive species
Man-made underwater structure that promotes the growth of reef dwelling organisms
runoff
the oceans
artificial reefs
A steady increase of Earth’s average temperatures
climate change
global warming
over-fishing
Taking more fish out of an ecosystem than can be replaced by natural processes
invasive species
human dependency
over-fishing
Rainfall and surface water that drains or flows from land into streams, rivers, lakes or the oceans
over-fishing
runoff
artificial reefs
Food, transparency, energy and recreation
climate change
global warming
human dependency
When an offspring grows off from the body of a parent organism it is called __________________.
budding
fission
____________________ occurs when a male gamete (sperm) combines with a female gamete (egg).
sporulation
fertilization
How many parents are required for sexual reproduction?
0
1
2
All of the offspring of an organism have the same genetic material, which is identical to the parent organism. From this, we can conclude that this organism -
makes its own food
is unicellular
reproduces asexually
What are some of the facts about asexual reproduction?
Takes only one mate to reproduce and takes a longer time to reproduce
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
Takes only one mate to reproduce and takes a shorter time to reproduce
What are some of the facts about sexual reproduction?
Takes two mates to reproduce and takes a longer time to reproduce
Takes one mate to reproduce and takes a shorter amount of time to reproduce
What is an advantage of sexual reproduction?
Allows genetic variation
Only needs one parent
What is one disadvantage of sexual reproduction?
Only one parent needed
Off spring are exact copies of parents
Needs two parents
When a starfish grows a new body off a broken arm, what kind of reproduction is this?
Sexual
Differentiation
Asexual
The offspring from asexually reproduced organisms are?
Different than their parents
Identical to parents
Requires only one parent
sexual
asexual
Requires two parents
sexual
asexual
In sexual reproduction the male produces ___ cells.
Malex
Quack
Egg
Sperm
In sexual reproduction the female produces ___ cells.
Femalex
Quack
Egg
Sperm
