Spring Review

Draw a food chain for one aquatic ecosystem.

• Algae → Fish → Shark

• Grass → Cow → Human

• Orca→ Fish→ Algae

• Phytoplankton→ Whale→ Krill

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How do invasive species impact aquatic ecosystems?

• They have no impact

• They can disrupt food chains and outcompete native species

• They always improve biodiversity

• They only affect terrestrial ecosystems

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How are freshwater fish adapted to survive?

• They have salt glands

• They can tolerate low salinity

• They have thick fur

• They can fly

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How are saltwater fish adapted to survive?

• They have salt glands and specialized kidneys to excrete excess salt

• They can tolerate low salinity

• They have thick fur

• They can fly

Identify each labeled part of the fish anatomy.

• A - Dorsal Fin, B - Caudal Fin, C - Mouth, D - Eye

• A - Caudal Fin, B - Dorsal Fin, C - Mouth, D - Eye

• A - Eye, B - Mouth, C - Caudal Fin, D - Dorsal Fin

• A - Mouth, B - Eye, C - Dorsal Fin, D - Caudal Fin

What is a wetland? What three factors must be present for a place to be considered a wetland?

• Dry soil, low humidity, high temperature

• Water saturation, hydric soil, hydrophytic vegetation

• High altitude, rocky terrain, sparse vegetation

• Sandy soil, low water table, desert plants

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What are some examples of the special adaptations found in freshwater wetland plants and animals?

• Bright flowers and sharp claws

• Water-resistant leaves and webbed feet

• Long stems and hooves

• Sharp spines and long beaks

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How are wetlands important to fish, birds, and other wildlife?

• They provide no significant benefits

• They serve as habitats and breeding grounds

• They are only important for human recreation

• They are primarily used for agriculture

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How do wetlands improve water quality?

• By increasing salinity

• By filtering pollutants

• By reducing oxygen levels

• By increasing sedimentation

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How do tidal fluctuations impact life in estuaries?

• They increase water temperature

• They stabilize salinity levels

• They create varying salinity conditions

• They decrease nutrient availability

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