Slide 1 / 115 Slide 2 / 115 3 rd Grade PSI Growth and Development of Organisms 2015-12-06 www.njctl.org Slide 3 / 115 Slide 4 / 115 Set Up: Germination Lab Table of Contents Before we begin, we need to set up the Germination Lab! Click on the topic to go to that section You will plant a seed and observe how it changes every day. Life Cycles · Plant Life Cycles · Animal Life Cycles · Works Cited · Source: Wikimedia Commons. Author: Bluemoose. Slide 5 / 115 Slide 6 / 115 Living and Nonliving Think back to what you already know about living and nonliving things. What is the difference between a living thing and a nonliving thing? Discuss as a class and write your ideas below. Life Cycles Return to Table of Contents
Slide 7 / 115 Slide 8 / 115 Living and Nonliving Characteristics of Living Things Categorize each of the following as being either living or nonliving. There are four characteristics that all living things have. Click below to watch a short video about golden retriever puppies. As you watch, Move each item into the appropriate box. take notes about what makes the puppies considered living things. Write all of your ideas in the box. cloud vine river fire bug baby animal Click here to watch a video about golden retriever puppies. Living Things Nonliving Things Slide 9 / 115 Slide 10 / 115 Characteristics of Living Things Characteristics of Living Things No matter how different living things look, they all have these Think about all of the ideas your class has had about what makes same characteristics in common: something a living thing. They eat and use energy. · Can you take your ideas and place them into 4 different categories? They grow and develop. · They reproduce. · They can interact with their environments. · Source: Wikimedia Commons. Author: # # # Source: Wikimedia Commons. Author: Justin. Slide 11 / 115 Slide 12 / 115 Grow / Develop Eat / Use Energy Can you survive if you stop eating? All living things grow into an adult version, although how they do so varies greatly! Eating gives us energy! Just like you, all living things need energy to survive. Source: Wikimedia Commons. Author: Marquard. Source: Wikimedia Commons. Author: Mdf. Source: Wikimedia Commons. Author: Epipelagic. Source: Wikimedia Commons. Author: Willow. Animals eat lots of Plants do not eat food - different types of food in they make their own! They order to get energy and use the energy from the survive. sun to make food. Source: Wikimedia Commons. Author: Culos. Source: Wikimedia Commons. Author: Famartin.
Slide 13 / 115 Slide 14 / 115 Interact with the Environment Reproduce What would happen if you walked outside in a shirt and shorts on a All living things reproduce, or make offspring. very cold day? You would probably start shivering and go back inside right away! Your body interacted with the environment. You responded to the cold temperature by shivering. Source: Wikimedia Commons. Author: Chaurasia. Source: Wikimedia Commons. Author: Dilmen. Plants reproduce from seeds. Animals reproduce in many different ways. Some hatch from eggs and some develop in the mother's body. Source: Wikimedia Commons. Author: Sagdejev. Slide 15 / 115 Slide 16 / 115 Interact with the Environment Interact with the Environment Living things interact with the environment in many different ways! Can you think of any other examples of how living things interact with (or respond to) the environment? Write them below. Animals interact with their environments in order to survive. This impala heard a noise and froze, trying to determine if danger is near. If so, she will run away quickly. Source: Wikimedia Commons. Author: Karim. Slide 17 / 115 Slide 18 / 115 Interact with the Environment 1 Why is a rock considered nonliving? Plants are also able to interact with their environments. A A rock is able to reproduce. B A rock cannot respond to its environment. C A rock uses energy. The flower and leaves of this sunflower will move in the direction of the sun as it moves across the sky. It D All of the above. does this so that it can absorb the most amount of sunlight as possible to make food. Source: Wikimedia Commons. Author: Pamri.
Slide 19 / 115 Slide 20 / 115 Growth 2 Plants do not interact with their environments. Click below to watch a video of the growth of an acorn. Then, put the True pictures into the correct order for an acorn's life. False Click here to watch an acorn grow from the seed to the small oak tree. Slide 21 / 115 Slide 22 / 115 Life Cycle Life Cycle All living things go through a life cycle. All living things follow the same pattern of life. The 4 steps of the life cycle are: Living things begin small and grow into an adult stage. As an adult, birth · living things can reproduce, creating new copies of themselves. growth · Eventually, all living things die. reproduction · This process is called a life cycle. death · Source: Wikimedia Commons. Source: Wikimedia Commons. Author: Culos. Author: Marlin. Source: Wikimedia Commons. Source: Wikimedia Commons. Author: Descouens. Author: Johansson. There are many different plants and animals that live their lives in different ways. Despite this, they all share these four steps of a life cycle. Slide 23 / 115 Slide 24 / 115 3 What types of living things go through a life cycle? 4 Arrange the steps of the life cycle in the correct order. C Growth D Reproduction A Some living things A Birth B Death B Only non-living things C All living things
Slide 25 / 115 Slide 26 / 115 Populations Change in Size Populations Change in Size A group of a living things that lives in a certain area is called a The life cycle stages are: population. Populations change over time. Sometimes they grow Birth Growth Reproduction Death larger. Sometimes they grow smaller. In some situations, the population becomes so small that it disappears. When this happens, Two of the stages increase population size, while one decreases we say that the population has gone extinct. population size. Move the stages into the correct boxes. Decrease Population Increase Population Due to pollution, global warming and fungal skin infections, the golden toad went extinct in 1989. Source: Wikimedia Commons. Author: Smith. Slide 27 / 115 Slide 28 / 115 Births Increase Populations Deaths Decrease Populations When living things die, a population becomes smaller. When new living things are born, a population becomes bigger. Look at our squirrel population below. There were 5 births in the last The dots below show a population of squirrels. year, bringing the population up to a size of 15. How large is the population? ________ In the next year, there are 7 deaths. Cross out 7 dots below. In the next year, 5 new squirrels are born. Draw 5 new dots below. What is the population size? _______ Now how large is the population? ________ Slide 29 / 115 Slide 30 / 115 Populations Change in Size Populations Change in Size Births and deaths determine how a population changes in size. When more individuals die than are born, a population decreases. For example, let's consider a larger squirrel population. Initially there When more individuals are born than die, a population increases. are 50 squirrels in a stand of trees. During the next year, 15 squirrels die and 10 squirrels are born. What is the new population size? Did Suppose that there are 15 ducks that live near a pond. In one year, the population increase or decrease? 5 of the ducks die. How many ducks will need to be born in order for the population to increase? First, let's think about how many squirrels died. For the population to 50 - 15 = 35 squirrels increase, there needs to be more births than deaths. So, Now, let's think about how many squirrels were born. at least 6 ducks need to be 35 + 10 = 45 squirrels born in order for the At first, there were 50 squirrels and now there are population to increase. 45. The population decreased in size. Source: Wikimedia Commons. Source: Wikimedia Commons. Author: Pingstone. Author: Karim.
Slide 31 / 115 Slide 32 / 115 5 If the number of births equals the number of deaths, a 6 In a forest, there are 100 oak trees. Over the course of population will increase in size. several years, 7 oak trees die and 13 new oak trees grow. What is the new population size? True False Slide 33 / 115 Slide 34 / 115 Living Things Reproduction Of all the stages of the life cycle, which is most important for a Reproduction is necessary for living things to continue to exist over time. specific living thing to survive over long periods of time? For example, humans have been on Earth for over 5 million years. Which stage of the life cycle has allowed humans to continue to exist? Discuss with a partner and then click in the box below. Reproduction Source: Wikimedia Commons. Author: Locaguapa. When living things die faster than they can reproduce, they may go extinct. Source: Wikimedia Commons. Author: Elf. Slide 35 / 115 Slide 36 / 115 Case Study: Arabian Oryx Case Study: Arabian Oryx The Arabian oryx is a medium-sized antelope that originally lived on Unfortunately, the Arabian oryx was hunted to extinction in the wild the Arabian Peninsula. by 1972. If the oryx were about to go extinct, what does this tell you about the Arabian oryx and reproduction? They were being killed faster than they were able to reproduce. This caused their population to decrease drastically until they finally went extinct. Source: Wikipedia. Author: Western Region. Source: Wikimedia Commons. Author: Afrogindahood.
Recommend
More recommend
