Here’s the completed worksheet with accurate, science-based answers and explanations:
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Q1. Fill in the blanks:
a)
Humans beings use _muscles and bones_ for movement.
*Explanation:* Human movement is enabled by the skeletal system (bones providing structure) and muscular system (muscles contracting to pull bones). Joints allow flexibility, but muscles and bones are the primary components.
b)
Ducks have _webbed feet_ that help them swim.
*Explanation:* Webbing between their toes increases surface area, acting like paddles to propel them efficiently through water.
c)
The size and the number of fins _vary_ in different fish.
*Explanation:* Fish species adapt to their environments — some have large fins for stability or maneuvering (e.g., angelfish), while others have fewer/smaller fins for speed (e.g., tuna).
d)
The gills take in oxygen dissolved in _water_.
*Explanation:* Fish extract dissolved oxygen from water as it flows over their gill filaments, where gas exchange occurs.
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Q2. Give two examples of each:
a)
Reptiles: _Snake, Lizard_
*Explanation:* Reptiles are cold-blooded vertebrates with scaly skin. Snakes and lizards are common examples; others include turtles and crocodiles.
b)
Insects: _Ant, Butterfly_
*Explanation:* Insects have three body parts (head, thorax, abdomen), six legs, and often wings. Ants and butterflies fit this definition perfectly.
c)
Rodents: _Mouse, Squirrel_
*Explanation:* Rodents are mammals characterized by continuously growing incisors. Mice and squirrels are classic examples; rats and beavers also belong here.
d)
Scavengers: _Vulture, Hyena_
*Explanation:* Scavengers feed on dead animals. Vultures locate carcasses via sight/smell, while hyenas often steal kills or consume leftovers.
e)
Migrating animals: _Monarch butterfly, Arctic tern_
*Explanation:* Migration involves seasonal long-distance travel. Monarch butterflies migrate from North America to Mexico, and Arctic terns fly from pole to pole annually.
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Q3. Answer the following questions:
a)
Mention 4 different shapes of birds’ beaks and give one example for each.
1.
Hooked beak – *Eagle*
*Use:* Tearing flesh; sharp, curved tip for gripping prey.
2.
Long, thin beak – *Hummingbird*
*Use:* Probing flowers for nectar; adapted for feeding on liquid food.
3.
Spoon-shaped beak – *Spoonbill*
*Use:* Scooping small aquatic creatures; filters water while sweeping side-to-side.
4.
Chisel-shaped beak – *Woodpecker*
*Use:* Drilling into wood to find insects; strong, pointed beak acts like a chisel.
*Bonus note:* Beak shape directly correlates with diet and habitat — an example of evolutionary adaptation.
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✔ All answers align with elementary/middle school science curricula and emphasize biological adaptation and classification. Let me know if you’d like diagrams or further details!
Parent Tip: Review the logic above to help your child master the concept of science worksheet for grade 5.
