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WorksheetsUnit 5: Biodiversity and Natural Selection
Total questions: 26
Worksheet time: 23mins
Artificial selection is...
the process by which humans select who reproduces based on human desired traits
the process by which natures selects who lives and dies based on overall fittness
the process by which animals adapt to their surroundings.
the process by which people take over ecosystems.
What is the definition of mutation?
Natural Breeding
A random change in the genes of an organism
Natural Selection
Breeding two animals to create a new one
Why are advantageous traits more likely to be passed onto offspring?
Because they come from recessive alleles.
Because they come from dominant alleles.
Because they are more likely to survive and reproduce.
Because the trait is an acquired phenotype.
Reproduction that combines genetic material of two organisms
Sexual Reproduction
Asexual Reproduction
Fertilization
Budding
Which option is the best example of pressures that cause natural selection?
Ranchers breeding cows
Farmers creating bigger corn
Climate change and Predators
Artificial Selection
Reproduction involving a single organism where genetic copies of itself are made.
Sexual Reproduction
Asexual Reproduction
Budding
Pollination
What is a disadvantage of asexual reproduction?
Organisms cannot adapt to challenges very quickly
Organisms only have one parent
There is more genetic variation
They are all female
When comparing the offspring of sexually and asexually reproducing organisms, the genetics of the sexually reproduced offspring will show...?
contain fewer mutations
be lesser in quantity
be simpler overall
show more variation
What is an adaptation?
A mutation
A trait that improves fitness
A selective pressure that causes change
Any change in a population
The green beetles are an example of what selection pressures
Sexual selection
Predators and environment
Environment and finding food
Diet
The giraffe is an example of ___________________________ resulting from _______________________________ pressure
Artificial selection, environmental
Natural selection, predator
Artificial selection, human
Natural selection, finding food
This gecko has an extreme look, which answer best explains how the gecko got this way?
The gecko is being fancy to attract a mate, the more they look like leaves the more attractive they are the more often they mate.
There was variation in the gecko population, geckos that looked more like leaves had camouflage and survived predators more often, living to reproduced more often.
This gecko is a mutant and will likely not survive to pass on its genes because it looks so strange and predators will notice it more now.
There is no gecko... it's all in your mind...
Wolves became dogs because...
Humans used trash to lure wolves in and then captured them and bred them until they became tame
Wolves deiced humans were useful and started to depend on them for food and shelter, in return they helped humans hunt
Wolves were attracted by human's trash and wolves that were less fearful of humans got more food and reproduced more often until... early dogs!
Ancient humans stole wolf puppies and raised them by hand so they grew up friendly to humans.
An ecological niche is ...?
a small physical space
the role of an organism it its ecosystem
the benefits an organism provides the environment
the same thing as a habitat
What is the niche of a vulture?
Lives in open fields, preying on mice and rabbits
Lives in the forest, hunting at night for small rodents
Lives in open country side, its a scavenger eating carrion (dead animals)
Which animal is best suited for this niche?
It lives in woodlands and meadows eating plants and being prey for larger birds and mammals
Bob cat
Gopher snake
Cotton tail rabbit
Stellar Jay
What happens during the process of natural selection
individuals with the most beneficial traits survive and reproduce more offten
Individuals with the weirdest mutations survive and reproduce to create exaggerated traits
Harmful traits are passed onto the next generation
The chameleons tongue is an example of a _________________.
selective pressure
mutation
adaptation
fancy trait
What is one disadvantage of sexual reproduction?
Only one parent needed
Off spring are exact copies of parents
Happens very quickly
Needs two parents
