7th Grade Science End of Unit Assessment Review Part 2

Genetic variation is important because it allows a species to

• have a variety of looks within one species

• adapt to change so that the species is less likely to become extinct

• stay consistent and easy to recognize

• have interesting mutations

Match the structure with it's function

• lungs

• Break down food

• Stomach

• remove liquid waste

• Glands

• protection

• Skin

• regulate the body

• Kidney

• remove oxygen from air

Variation means​ ​ (a)  

• there are genetic differences
• everything is the same
• there is no genetic diversity
• all species are different

Selective breeding is when

• natural chooses the traits that are selected for future generations

• animals are selected by nature as the best of that species

• there is a large amount of biodiversity

• people choose the desired traits and breed individual animals with them

Chameleons have all of the following structural adaptations...

• sit still to ambush prey

• color changing skin for camouflage

• walking along gripping branches

• display largest part of body when angry

Match the following organ with it's body system

• Endocrine

• Lungs

• Digestive

• Glands

• Respiratory

• Skin

• Excretory

• Stomach

• Integumentary

• Kidney

Poodles were made by​ (a)  

• selective breeding
• natural selection
• random chance
• natural breeding

Rank the deer in order of their ability to compete for mates with 1 being the most able and 5 being the least able to compete

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• 
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Answer explanation

the thicker and larger the the more competitive the deer can be for mates in a breeding cycle

Match the adaptation

• prehensile tale

• Spider Monkey

• layer of blubber

• Frog

• hollow bones

• Fish

• long legs

• Whale

• gills

• Bird

Chloroplasts are for ​ (a)   and xylem is for ​ (b)  

• glucose production
• water transportation
• water storage
• food storage
• anchoring the plant
• food transportation