How External Parts Help - 1st Grade Science

Which external part best helps a cactus save water: waxy skin, feathers, or webbed feet?

Waxy skin. The waxy coating prevents water loss in dry desert conditions.
Which external part of many animals protects their bodies and helps prevent drying out?

Skin. Skin forms a barrier against water loss and injury.
What is the main job of a porcupine's quills for meeting its needs?

Porcupine quills help protect it from predators. Sharp quills make the porcupine painful to attack or eat.
Which external part should you choose to explain how a rabbit stays warm?

Fur. Thick fur traps warm air close to the rabbit's body.
Which external part of most birds helps them fly and get away from danger?

Wings. Wings create lift by pushing air down.
What is an external part of an organism?

A body part on the outside that helps the organism live. External means outside; these parts help organisms survive.
Identify the best external part to match this need: a bird must fly to reach food.

Wings. Wings enable flight to reach food in high places.
Which external part should you choose to explain how a bird picks up and eats seeds?

Beak. The hard beak shape helps crack and hold seeds.
Which external part of many animals is mainly used to hear sounds?

Ears. Ears detect sound waves to help animals find food and avoid predators.
What is the main need that roots help a plant meet?

Getting water and holding the plant in the ground. Roots absorb water and anchor plants in soil.
What is the main job of a fish's fins for meeting its needs?

A fish's fins help it swim and steer. Fins act like paddles and rudders for movement and direction.
Which external part best helps a bird fly: wings, gills, or roots?

Wings. Wings provide lift and thrust needed for flight.
Which external part of many animals is mainly used to smell?

Nose. Noses detect odors to find food and identify danger.
Which external part of a polar bear helps it stay warm in a cold habitat?

Thick fur. Thick fur traps warm air close to the body.
Which external part of a duck helps it swim efficiently in water?

Webbed feet. Webbing between toes acts like paddles in water.
What is the main need that a turtle shell helps the turtle meet?

Protection from predators and injury. The hard shell acts like armor when turtle pulls inside.
What is the main need that a stem helps a plant meet?

Supporting the plant and moving water to leaves. Stems are like straws that transport water upward.
What is the main job of a plant's roots for meeting its needs?

Roots take in water and hold the plant in place. They absorb nutrients from soil and anchor the plant securely.
Which external part best helps a fish breathe: gills, fur, or petals?

Gills. Only gills can extract oxygen from water for breathing.
Which external part of a fish helps it swim through water?

Fins. Fins push against water to create movement.
Which external part of a bird is used to pick up food and help it eat?

Beak. Beaks are hard, pointed mouths that help birds grab and break food.
Which external part of a turtle helps protect it from predators?

Shell. Hard shells act as armor against attacks.
What is the main need that a bird beak helps the bird meet?

Getting and eating food. Different beak shapes help birds eat different foods.
What is the main job of a whale's blowhole for meeting its needs?

A blowhole helps a whale breathe air at the surface. Located on top, it lets whales breathe without fully surfacing.
What is the main job of a giraffe's long neck for meeting its needs?

A long neck helps a giraffe reach high leaves. Height advantage lets giraffes eat leaves other animals can't reach.
What is the main job of a woodpecker's strong beak for meeting its needs?

A strong beak helps it find insects in wood. The hard beak hammers through bark to reach hidden insect food.
Which external part should you choose to explain how a tree gets water from the soil?

Roots. Root hairs absorb water from surrounding soil.
What is the main job of a skunk's spray for meeting its needs?

Skunk spray helps protect it from predators. The smelly chemical spray deters attackers without physical fighting.
What is the main job of a fish's gills for meeting its needs?

A fish's gills help it breathe underwater. Gills extract oxygen from water, allowing fish to breathe.
What is the main need that claws help many animals meet?

Catching food, climbing, or digging. Sharp claws grip, tear, and dig for various needs.
Which external part should you choose to explain how a fish moves through water?

Fins. Fish push water with fins to propel forward.
Which external part of a fish helps it move forward and steer?

Tail fin. The tail fin pushes water backward to move the fish forward.
What is the main job of a bird's beak for meeting its needs?

A bird's beak helps it get and eat food. Beaks are shaped to help birds catch and break down their specific food.
What is the main need that thorns help a plant meet?

Protection from animals that might eat it. Sharp thorns discourage animals from eating the plant.
What is the main need that wings help a bird meet?

Moving by flying to find food and stay safe. Wings provide lift for flight and escape from danger.
What is the main need that a fish fin helps the fish meet?

Swimming and steering in water. Fins act like paddles and rudders in water.
Which external part of many mammals helps them walk, run, and move to find food?

Legs. Legs support body weight and enable movement to find resources.
What is the main need that fruit helps a plant meet?

Protecting seeds and helping spread them. Fruit develops from flowers to protect and disperse seeds.
Which external part of a porcupine helps protect it from predators?

Quills. Sharp quills stick into attackers when touched.
What is the main job of a rabbit's long ears for meeting its needs?

Long ears help a rabbit hear danger. Large ears detect predator sounds from far away for early warning.
What is the main job of a camel's hump for meeting its needs?

A camel's hump stores fat for energy. Fat storage provides energy when food and water are scarce in the desert.
What is the main job of a duck's webbed feet for meeting its needs?

Webbed feet help a duck swim in water. The webbing acts like flippers, pushing more water with each stroke.
What is the main job of a chameleon's color change for meeting its needs?

Color change helps it hide and stay safe. Camouflage through color matching helps avoid being seen by predators.
What is the main need that bark helps a tree meet?

Protecting the tree from harm and drying out. Bark is like skin that shields the tree trunk.
Identify the best external part to match this need: a turtle must stay safe from predators.

Shell. Hard shells provide protection from predator attacks.
What is the main job of a polar bear's thick fur for meeting its needs?

Thick fur helps a polar bear stay warm. Dense fur traps air for insulation in freezing Arctic temperatures.
Which external part of most animals is mainly used to see?

Eyes. Eyes detect light and images for finding food and avoiding danger.
Which external part of a dog helps it run and also dig in the ground?

Paws. Paws have pads for traction and claws for digging.
Which external part of a cat helps it catch prey and climb?

Claws. Sharp claws grip surfaces and hold prey.
Which external part of a snake helps it move on the ground?

Scales. Overlapping scales grip surfaces for movement.
What is the main job of a turtle's shell for meeting its needs?

A turtle's shell helps protect it from danger. The hard shell acts as armor against predators and injuries.
What is the main job of a cat's claws for meeting its needs?

A cat's claws help it catch prey and climb. Sharp, retractable claws grip prey and tree bark for hunting and climbing.
Which external part of many animals is mainly used to eat and drink?

Mouth. Mouths take in food and water needed for survival.

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