1) the characteristic of mammals are warm-blooded, body hair, they have babies. a) ok b) Gabs 2) the characteristic of reptiles is cold-blooded, scales, lay eggs.  a) ok b) Gabs 3) the characteristic of fish is cold-blooded, gills, scales, live in water, lay eggs a) ok b) Gabs 4) the characteristic of birds is warm-blooded, feathers, lay eggs a) ok b) Gabs 5) the characteristic of insects is body in three parts, six legs, lay eggs a) ok  b) Gabs  6) the characteristic of amphibians is live on land and in water, cold-blooded, lay eggs a) ok  b) Gabs  7) Which of the following is a characteristic of mammals? a) a) They lay eggs b) b) They have body hair and give birth to live babies c) c) They have feathers d) d) They breathe through gill 8) Which animal is an example of a mammal from the table? a) a) Lizard b) b) Parrot c) c) Goat d) d) Fish 9) What is a key characteristic of reptiles? a) a) They have scales and lay eggs b) b) They have feathers and fly c) c) They give birth to live babies d) d) They have three body parts 10) Which of these animals is a reptile? a) a) Frog b) b) Lizard c) c) Ant d) d) Fish 11) How do fish breathe? a) a) Through their lungs b) b) Through their skin c) c) Through their gills d) d) Through their feathers 12) Which of the following is NOT a characteristic of fish? a) a) They are cold-blooded b) b) They have gills c) c) They live on land d) d) They lay eggs 13) Birds are different from reptiles because they have: a) a) Feathers b) b) Scales c) c) Gills d) d) Three body parts 14) What is an example of a bird ? a) a) Goat b) b) Parrot c) c) Lizard d) d) Frog 15) Which of these is a characteristic of insects? a) a) They have three body parts and six legs b) b) They are warm-blooded and have fur c) c) They have feathers and lay eggs d) d) They breathe through gills 16) Which insect is shown in the table? a) a) Butterfly b) b) Ant c) c) Spider d) d) Mosquito 17) Amphibians can live: a) a) Only on land b) b) Only in water c) c) On land and in water d) d) Only in trees 18) Which of these is NOT a characteristic of amphibians? a) a) They are cold-blooded b) b) They lay eggs c) c) They have feathers d) d) They live both in water and on land 19) Which of these groups is warm-blooded? a) a) Mammals and birds b) b) Reptiles and amphibians c) c) Fish and insects d) d) Amphibians and mammals 20) Which of these animal groups has scales? a) a) Mammals and birds b) b) Amphibians and insects c) c) Reptiles and fish d) d) Birds and fish 21) What do reptiles, fish, amphibians, and insects all have in common? a) a) They are all warm-blooded b) b) They all lay eggs c) c) They all have feathers d) d) They all breathe through gills 22) What is the first stage in a frog’s life cycle? a) a) Tadpole b) b) Egg c) c) Froglet d) d) Adult Frog 23) How do frog eggs hatch? a) a) The mother frog carries them in her mouth b) b) The eggs break open in the soil c) c) The eggs hatch in water into tadpoles d) d) The eggs hatch directly into small frogs 24) What is a key characteristic of a tadpole? a) a) It has legs but no tail b) b) It has a long tail and no legs c) c) It can live on land immediately d) d) It has feathers 25) What happens during the froglet stage? a) a) The tadpole grows legs and its tail starts shrinking b) b) The frog develops wings c) c) The frog lays eggs d) d) The frog goes through metamorphosis overnight 26) How does a frog breathe as an adult? a) a) Through gills b) b) Through skin and lungs c) c) Through its tail d) d) It does not need to breathe 27) Where do frogs lay their eggs? a) a) On land b) b) In trees c) c) In water d) d) Inside a cocoon 28) What do tadpoles eat? a) a) Meat b) b) Leaves and algae c) c) Insects d) d) Other frogs 29) What is the second stage of the butterfly life cycle? a) a) Pupa b) b) Adult butterfly c) c) Larva (Caterpillar) d) d) Egg 30) What is the main function of a caterpillar? a) a) To eat and grow b) b) To lay eggs c) c) To fly d) d) To hunt for food 31) What happens during the pupa (chrysalis) stage? a) a) The caterpillar turns into a butterfly b) b) The butterfly lays eggs c) c) The caterpillar eats more leaves d) d) The butterfly dies 32) How does a butterfly emerge from the chrysalis? a) a) It hatches like a chick from an egg b) b) It breaks the pupa covering and spreads its wings c) c) It grows slowly and turns into a frog d) d) It digs underground and then flies 33) Food chains are a representation of the flow of energy and feeding relationship from one organism to another in an ecosystem. a) ok b) gabs 34) 1. Producers 🌱 – Plants, algae, and other organisms that make their own food using sunlight through photosynthesis. a) ok b) gabs 35) 2. Primary Consumers 🐛 – Herbivores that eat plants (e.g., rabbits, caterpillars). a) ok b) gabs 36) 3. Secondary Consumers 🦊 – Carnivores or omnivores that eat herbivores (e.g., frogs, foxes). a) ok b) gabs 37) 4. Tertiary Consumers 🦅 – Top predators that eat other carnivores (e.g., hawks, lions). a) ok b) gabs 38) 5. Decomposers 🍄 – Fungi and bacteria that break down dead organisms and recycle nutrients into the soil. a) ok b) gabs 39) example : ☀️ Sun → 🌿 Grass (Producer) → 🐛 Caterpillar (Primary Consumer) → 🐦 Bird (Secondary Consumer) → 🦅 Eagle (Tertiary Consumer) a) ok b) gabs 40) What is the main source of energy for all food chains? a) a) Water b) b) Sunlight c) c) Soil d) d) Air 41) What is the role of plants in a food chain? a) a) Consumers b) b) Decomposers c) c) Producers d) d) Predators 42) Which of the following is a primary consumer? a) a) Rabbit b) b) Snake c) c) Hawk d) d) Grass 43) A frog eats an insect. What type of consumer is the frog? a) a) Producer b) b) Primary consumer c) c) Secondary consumer d) d) Decomposer 44) In a food chain, what do decomposers do? a) a) Produce oxygen b) b) Break down dead organisms c) c) Eat primary consumers d) d) Make their own food 45) Which of the following is a carnivore in a food chain? a) a) Grasshopper b) b) Deer c) c) Lion d) d) Tree 46) In the food chain grass → rabbit → fox, what would happen if the rabbit population decreased? a) a) The grass would increase b) b) The fox population would increase c) c) The foxes would have more food d) d) The grass would disappear 47) Which of the following is an omnivore? a) a) Snake b) b) Eagle c) c) Bear d) d) Grass 48) What happens if the top predator is removed from a food chain? a) a) The population of prey may increase b) b) The ecosystem will not be affected c) c) Plants will disappear d) d) Producers will become secondary consumers 49) A cow eats grass. What type of consumer is it? a) a) Primary consumer b) b) Secondary consumer c) c) Tertiary consumer d) d) Producer 50) Which of the following food chains is correct? a) a) Sun → Grass → Deer → Tiger b) b) Sun → Tiger → Deer → Grass c) c) Sun → Tiger → Grass → Deer d) d) Sun → Grass → Tiger → Deer 51) Which of the following food chains is correct? a) a) Sun → Grass → Cow → Lion b) b) Sun → Grass → Rabbit → Fox c) c) Sun → Lion → Rabbit → Grass d) d) Sun → Fox → Rabbit → Grass 52) Which of the following represents a correct ocean food chain? a) a) Sun → Plankton → Shark → Small Fish b) b) Sun → Small Fish → Shark → Plankton c) c) Sun → Plankton → Small Fish → Shark d) d) Sun → Shark → Plankton → Small Fish 53) Which of these is an example of a wetland food chain? a) a) Sun → Algae → Frog → Insect → Bird b) b) Sun → Algae → Insect → Frog → Bird c) c) Sun → Bird → Frog → Insect → Algae d) d) Sun → Frog → Insect → Algae → Bird 54) Which of these is an example of a wetland food chain? a) a) Sun → Shrub → Rabbit → Fox → Hawk b) b) Sun → Shrub → Lemming → Arctic Fox → Polar Bear c) c) Sun → Lemming → Shrub → Arctic Fox → Polar Bear d) d) Sun → Arctic Fox → Lemming → Shrub → Polar Bear

Science Unit 4

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