Science 4 Lesson 1 (3rd Q) Plants PDF

Science 4 Toddler Stage Lesson 1 (3rd Q) - the next stage from infancy - it is also called preschool years Plants Response to Varying Environmental...

Science 4 Toddler Stage Lesson 1 (3rd Q) - the next stage from infancy - it is also called preschool years Plants Response to Varying Environmental - it is the stage where physical and motor Conditions development slows down but Tropism- the plants reaction to a stimulus in the observable intellectual, emotional, abd environment social changes occur - plant movement - toddlers begin to recognize concepts like opposites and time Stimulus- anything that causes an activity or a - they also have a growing vocabulary at change in an organism this stage Response- the reaction of a living thing to a Childhood Stage stimulus - in this stage, humans have different Auxins- plant hormone rates of growth - some children grow faster than the - cause growth and responsible for othe others tropism - they start to go to school Phototropism- the response of plants to Adolescence or Puberty any kind of light - between the ages of 12 and 15, humans go through a period of rapid growth Hydrotropism- plants response to water and change Geotropism- plants response to the pull of the - the changes that happen physically Earth and emotionally to teenage boys and girls are normal Thigmotropism- plants response to touch Adulthood Anemotropism- plants response to air Thermotropism- plants response to air - according to the law, a human being after the age of 21 is considered an Heliotropism- plants response to sunlight adult Lesson 2 (3rd Q) - this is the period in human lifespan in which full physical and intellectual have The Life Cycle of Humans been attained What is a life cycle? Late adulthood - A life cycle is how living things grow and - it comes for individuals who are over change during different stages of their sixty years old life. - at this stage, difficulties in movements - It includes reproduction, or how living and some life skills are often things in the adult stage produce more encountered of their kind. Stages in the Life Cycle of Animals Infancy Stage How the life of some animals begin? - after birth, the baby gets its food supply from the mammary gland of the - An animal may come out from its mother. mothers’s body alive.  - For some, they are hatched from an endosperm egg. 7. as the seedling grows, it will eventually use up the stored food in the Metamorphosis endosperm - all insects develop from eggs 8. the endosperm will then shrivel and fall - they pass through various stages in their off from the growing plant life cycle. 9. by then, the plant will have developed roots , stems, and leaves Incomplete Metamorphosis Some plants reproduce new plants by means - these insects pass through three stages ; of reproductive cell called spores egg-nymph-adult - occurs in insects like grasshoppers, cockroaches, and dragonflies. Stages in the Life Cycle of Plants Parts of a Seed 1. Embryo - the part of the seed that grows into a new plant. 2. Endosperm - the parts of the seed that stores food for the embryo 3. Seed Coat - the outer layer of the seed - it is for the protection of the seed Factors that can influence seed germination - first, seeds should be carefully chosen - seeds should be capable of germinating - there must be sufficient moisture and air in the soil - the temperature must be conducive for plant growth Stages of Seed Germination 1. Embryonic root - the first to come out from the seed 2. The stem begins to grow 3. the curved stem is the first part of the seedling to appear above the soil 4. it begins to straighten out 5. the growing stem pulls the endosperm and the embryonic leaves develop into the shoot of the plants 6. until it is able to make its own food, the seed gets its nutrients from the  Science 4 Science 4 Lesson 3 (3rd Q) Lesson 4 (3rd Q) COMPONENTS OF ECOSYSTEM Food Chains What is an ecosystem? Food Chain - it includes living things and nonliving - is a linear sequence that shows through things in an area which organisms’ energy is transferred Biotic Factors Example: - other life forms existing in a specific area or include all the living things in an ecosystem The living things play major roles in their area: 1. Producers 2. Consumers 3. Decomposers Producers - make food from inorganic matter - plants make food through photosynthesis Consumers Food Web - cannot make their own food; thus they - consists of many interconnected food eat the producer chains and shows what really happens 3 classification of consumers in an ecosystem 1. herbivores Example: - are living things that only eat plants to get food and the energy they need 2. carnivores - only eat meat 3. omnivores - eat both plants and animals to get energy Decomposers - include fungi, bacteria, protozoa, and other organisms that feed on dead matter Abiotic Factors Keep in mind: Food chain and food web show - include the nonliving things in an how energy is transferred from the producers ecosystem to the consumers.  Science 4 Lesson 5 (3rd Q) Beneficial and Harmful Interactions Among Living Things - Humans get their food from animals and plants. It is considered as a harmful interaction because the animals would be sacrificed for the benefit of the human. What is symbiosis? - In an ecosystem, the interaction between organisms that live together and benefit one another or only one or a few of those involved is called symbiosis. Interaction in an Ecosystem 1. Mutualism - An example of symbiosis, which means living together. - It is also known as the “give and take relationship” - is the interaction where organisms benefit from one another 2. Commensalism - It is a symbiotic relationship between organisms, in which one benefits and the other is unaffected or unharmed. 3. Competition - It is an interaction in which organisms fight with one another over important things such as food to survive. 4. Parasitism - It is a relationship between two different kinds of organisms where one benefits by harming the other. - Parasites are organisms that live on their hosts. 5. Predation - It is the consumers that kill other animals for food - The victims are called prey