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Plant Processes. The Big Idea: Like all living things, plants need nourishment, reproduce, and respond to stimuli. SPI’s 0707.3.1 Compare the chemical compounds that make up the reactants and products of photosynthesis and respiration.
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Plant Processes • The Big Idea: Like all living things, plants need nourishment, reproduce, and respond to stimuli. • SPI’s 0707.3.1 Compare the chemical compounds that make up the reactants and products of photosynthesis and respiration. 0707.3.2 Interpret a diagram to explain how oxygen and carbon dioxide are exchanged between living things and the environment. 0707.4.1 Classify methods of reproduction as sexual or asexual. 0707.4.2 Match flower parts with their reproductive functions.
Chapter 7 Plant Processes Preview Section 1 Photosynthesis Section 2 Reproduction of Flowering Plants Section 3 Plant Responses to the Environment Concept Mapping
Chapter 7 Section1 Photosynthesis Bellringer # 1 Describe what plants need in order to start photosynthesis. Open text to pg 184. Set up notes for 7.1
Chapter 7 Section1 Photosynthesis Objectives • Describe photosynthesis. • Compare photosynthesis and cellular respiration. • Describe how gas is exchanged in the leaves of plants. • Describe two ways in which photosynthesis is important.
Chapter 7 Section1 Photosynthesis Capturing Light Energy • Photosynthesis: process by which plants algae, and some bacteria use sunlight, Carbon dioxide, and water to make food. • Chlorophyll: green pigment that captures light energy. It is located in grana: stacks that are found in the chloroplasts of a plant cell.
Chapter 7 Section1 Photosynthesis Capturing Light Energy, continued • Making Sugar Light energy captured by chlorophyll is used to help form glucose molecules. In turn, oxygen gas (O2) is given off by plant cells.
Chapter 7 Section1 Photosynthesis Getting Energy from Sugar • Glucose molecules store energy. Plants use this energy for their life processes. • Cellular respiration: process by which cells use oxygen to produce energy from food. Opposite of Photosynthesis.
Chapter 7 Section1 Photosynthesis Gas Exchange • Stomata(singular, stoma): openings in leaf or stem that enable gas exchange. • Transpiration: process by which plants release water vapor into the air through stomata. If too much water is lost, a plant wilts.
Chapter 7 Section1 Photosynthesis The Importance of Photosynthesis • Plants and other photosynthetic organisms form the base of nearly all food chains on Earth. • Photosynthesis provides the oxygen that plants, animals, and most other organisms need for cellular respiration.
7.1 Vocab • Photosynthesis • Chlorophyll • Cellular respiration • Stoma • Chloroplast • Transpiration
Chapter 7 Section2 Reproduction of Flowering Plants Bellringer # 2 Explain why photosynthesis is important. Open text to pg 188. Set up notes for 7.2.
Chapter 7 Section2 Reproduction of Flowering Plants Objectives • Describe pollination and fertilization in flowering plants. • Explainhow fruits and seeds are formed from flowers. • Listthree reasons why a seed might be dormant. • List three examples of asexual reproduction in plants.
Chapter 7 Section2 Reproduction of Flowering Plants Pollination and Fertilization • Pollination: pollen is moved from anthers to stigmas. • Pollen contains sperm. After pollen lands on the style, a tube grows to the ovule. • Fertilization happens when a sperm fuses with the egg in ovule.
Chapter 7 Section2 Reproduction of Flowering Plants From Flower to Fruit • After fertilization, the ovule develops into a seed. • The ovary around the ovule becomes a fruit.
Chapter 7 Section2 Reproduction of Flowering Plants From Flower to Fruit, continued • The fruit helps protect the seed and spread the plant seeds. • Animals eat fruits and discard the seeds far from the parents. • Other fruits get caught on animal’s fur or are carried by the wind.
Chapter 7 Section2 Reproduction of Flowering Plants Development of a Fruit Click below to watch the Visual Concept. Visual Concept
Chapter 7 Section2 Reproduction of Flowering Plants From Seed to Plant • The young plant inside the seed stops growing once the seed is fully developed. • Dormant:inactive state of a seed or other plant part when conditions are unfavorable for growth.
Chapter 7 Section2 Reproduction of Flowering Plants From Seed to Plant, continued • When seeds are dropped or planted in a suitable environment, the seeds sprout. • Most seeds need water, air, and warm temperatures to germinate, or sprout. • Each plant had an ideal temperature at which most of its seeds will begin to grow.
Chapter 7 Section2 Reproduction of Flowering Plants Other Methods of Reproduction • methods that flowering plantsreproduce asexually: • Plantlets: Tiny plants grow along the edges of a plant’s leaves, fall off, and then grow on their own. • Tubers: Underground stems, or tubers, can produce new plants. • Runners: Above-ground stems from which new plants can grow.
7.2 vocab • Dormant • Germination • Fruit • Pollinator • Asexual reproduction • Runners
Bellringer # 3 The structures used for asexual reproduction in plants are _______, _______, ________. You may use your textbook to work on the assignments for today.
Bellringer # 4 Draw a flower and label it. Clear desk except for a pencil. Ch 7 Notebooks are due tomorrow.
