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Aim : Why is photosynthesis so important?

Aim : Why is photosynthesis so important? . Daily Catalyst : Why are we so concerned with plants, how do they help us survive? Homework : Text Pg. 240-245 Questions 1-5 on pg. 245 and vocab on pg. 240 . Plants. What are the differences between plant and animal cells?. Plant. Animal.

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Aim : Why is photosynthesis so important?

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  1. Aim: Why is photosynthesis so important? Daily Catalyst: Why are we so concerned with plants, how do they help us survive? Homework: Text Pg. 240-245 Questions 1-5 on pg. 245 and vocab on pg. 240

  2. Plants

  3. What are the differences between plant and animal cells? Plant Animal Centrioles Small Vacuole Only Performs Respiration No cell wall Not Square Shape • Chloroplasts • Chlorophyll • Perform the process of Photosynthesis • Cell Wall • Large Vacuole • Also Performs Respiration to create ATP (mitochondria) • Square Shape

  4. What is Photosynthesis? • Occurs in the Chloroplasts • CO2 + H2O + Sunlight  O2 + H2O + C6H12O6

  5. Aim: Why are plants so important for stability of the earth? Daily Catalyst: What are some of the important structures that plants have and why are they so important? Homework: Text Pg 252 Vocab and Pg 252-260 Questions 1-5 Quiz Thursday

  6. List The 5 Characteristics of Plants • They perform photosynthesis to make GLUCOSE. • Can NOT move from place to place. • They have CELL WALLS for support. • They are MULTICELLULAR and have SPECIALIZED tissues. • Must have LIGHT, CO2, H2O, O2, and minerals.

  7. Base your answers to the questions on the diagram below and on your knowledge of science. Thediagram represents a plant carrying out photosynthesis. Identify the source of energy for photosynthesis. State one way the plant uses the sugar that is produced in the leaves.

  8. How can a tree take water from the ground and bring it up to all of its limbs? • It has vascular tissue • What is vascular tissue? • tube like cells that transport food & water through a plant.

  9. How does vascular tissue help aplant? - allows plants to be large organisms since it enables them to transport important nutrients from one part of a plant to another.

  10. What are the 2 kinds of vascular tissue? • XYLEM– carries H2o from roots (zylum) to leaves. Everything goes up. • PHLOEM –FOOD from leaves to (flowum) roots and vice versa. Can move in both directions.

  11. What are the 2 kinds of plants? • Vascular = TRACHEOPHYTES = have roots, stems and leaves. Ex: trees, grasses 2. Non-vascular = BRYOPHYTES= NO roots, stems, or leaves. ex: mosses

  12. Aim: Why are roots so important for plants? Daily Catalyst: What are the two main types of tissue found in a multicellular plant? Homework: Text Book Pg. 266 questions 1-18 Quiz Friday

  13. What is a ROOT?? • organs of vascular plants. What are the FUNCTIONS of a root? • Anchor the plant • Collect water & minerals from the soil • Store food, vitamins, minerals

  14. What are the 2 KINDS OF ROOTS? • TAP ROOT –Ex: carrot, radish, dandelion 2. FIBROUS ROOT –Ex: trees, grass

  15. ROOT TIP DIAGRAM: • ROOT HAIR – absorbs H2O • CORTEX – stores food • EPIDERMIS – protective layer • ROOT CAP – protects root tip • PHLOEM – carries food • XYLEM – carries H2O up to leaves • GROWTH REGION – dividing cells, area of growth.

  16. Label Me Tissue (Storage) Root Hair (Absorption) Phloem (Transport) Xylem (Transport) Cambium (Cell Division)

  17. What is a STEM? • organ which connects roots & leaves. FUNCTIONS: • supports leaves for light • Stores food • Contain vascular tissue to transport food & water.

  18. What are the TYPES OF STEMS? • HERBACEOUS • soft, green, flexible • live 1-2 years • can do photosynthesis ex: grass, tulips, weeds • WOODY • hard, brown, rigid • live many years • cannot do photosynthesis ex: shrubs, trees

  19. What are the rings in a tree trunk? • layers of old xylem cells. • New xylem is formed every year by the CAMBIUM **Rings do not form in herbaceous stems.

  20. What is a LEAF? • plant organ that produces food (glucose) by photosynthesis. LEAF DIAGRAM: • CUTICLE – waxy layer, prevents H2O loss • EPIDERMIS –clear,protective layer of cells • PALLISADE LAYER-most photosynthesis occurs here; cells w/lots of chloroplasts • SPONGY LAYER-little photosynthesis here • VEIN – vascular tissue (xylem & phloem) • STOMATE – pore for gas exchange • GUARD CELLS – open & close stomates

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