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Life Science Grade 2 Answer Key

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Life Cycles
#1 What is the first stage of an insect life cycle? Egg
#2 Most plants start off their life cycle as a _______. Seed
#3 A darkling beetle has a ___ stage life cycle. 4
#4 A meal worm is in the ______ stage of it's life cycle. Larva
#5 When an living thing changes or transforms into a different animal that is called ______. Metamorphosis
Plants
#1 True or False: Plants are non-living False
#2 Plants can make their own ______. Food
#3 Plants need air, water, and ______ to grow. Sunlight
#4 What is another name for a baby plant when it is inside the seed? Embryo
#5 When a seed begins to grow that is called ______. Germinating
Plant Parts
#1 The outer pary of the seed that protects that baby plant is called the _____. Seed Coat
#2 What part holds up the plant? Stem
#3 What do roots do? 1. Keeps the plant in place -OR- 2. Collect water
#4 What part of the plant takes in sunlight to help the plant make food? Leaves
#5 Plants produce (make) ______ which we need to berathe. Oxygen
Living and Non-Living
#1 Is water living or non-living? Non-living
#2 Something that all living things do when they make more of their own kind. Reproduce
#3 Name something all living things do. 1. Grow 2. Change/adapt 3. Reproduce 4. Use energy 5. Get rid of waste 6. Breathe
#4 An adaptation helps a living thing _______. Survive
#5 5. What word means the same as responding to change? Adapt
Food Chains
#1 An animal that hunts other animals is called a _____. Predator
#2 If a shark eats a smaller fish, the shark is the predator and the fish is the _____. Prey
#3 This picture is an example of a ____ ____ . Food Chain
#4 An animal that is a palnt eater is called an ______. Herbivore
#5 In a food chain, all the animals _____ on each other. (Hint...it is NOT eat) Depend
Final Question
What is the difference between a Milkweed Bug's life cycle and a Darlking Beetle's Life Cylce? A Milkweed Bug has a 3 stage life cycle and a Darkling Beetle has a 4 stage life cycle.