3 FEATURES OF LIVING THINGS Grow and changeReproduce
4 Smaller Parts of Living Things Plant CellsCell membraneNucleusCytoplasmCell wallchloroplastAnimal CellsNucleusCytoplasmCell membrane
5 The Needs of Plants Review Vocabulary Mineral, A16 Root,A17 Stem,A17 Leaf,A18Energy,A18Oxygen,A19
6 Basic Needs Minerals Sunlight Water Air leaves stems /////////////////////roots
7 Why Does A Plant Need Leaves? Leaves are the main food-making part of the plant.Leaves take in sunlight.Leaves are green because of chlorophyll.Chlorophyll traps the energy in sunlight for the plant.Leaves also help the plant get the air it needs.It uses carbon dioxide from air.The plant uses the Sun’s energy to combine carbon dioxideand water to make food.8. Plants use food to stay alive and give off oxygen.
8 How Do Plants Respond To Their Environment? One way plants respondis by growing toward thesunlight.Trees respond to coolerweather when their leavesturn color.
9 Why It MattersWe depend on plants for food. We eat the roots,Stems, and leaves of plants. The cereals we eatAre made from plants. We eat animals that eatPlants. However, people need plants for moreThan food. We also breathe the oxygen that plantLeaves make.
10 The Life Cycle of a Plant Vocabulary PreviewLife cycle,A26Embryo,A26Heredity,A27Flowering plant,A28Conifer,A28
11 How Does a Plant’s Life Begin? A seed begins a plant’s life cycle. A plantbegins life, grows, develops, reproduces,and dies.
12 Think On a cold day, you might see icicles that have grown from the roof of a building. Does this mean icicles areliving? Explain.