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Plants

Explore the essential role of plants on Earth, from their structural components to the process of photosynthesis. Understand the significance of plant structures, including roots, stems, leaves, and flowers, and delve into the intriguing world of seeds.

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Plants

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  1. Plants Structure and Function

  2. Plants – An Overview • Have existed on this planet for nearly 400 million years. • Without plants, life on Earth would not exist as we know it. • Plants provide many great resources to planet Earth, including sources of food, oxygen, and habitat for other organisms. • Plants are known as producers, because they make or produce their own food through the process of photosynthesis .

  3. Photosynthesis • Photosynthesis is shown in the picture and equation given below.

  4. Photosynthesis continued • Plants are autotrophic or autotrophs, which literally means “self-feeders.” • A chemical equation is a written series of symbols that contains both reactants (ingredients) and products (end results). • Photosynthesis is a process that is unique to plants and some protists; without photosynthesis there is no recycling of the oxygen and carbon dioxide in the atmosphere.

  5. Plant Structures and Functions

  6. Plant Structures and Functions

  7. Plant Structures – Roots, Stems, Leaves

  8. Plant Structures – The Plant Cell

  9. Plant Structures – The Flower

  10. Seeds • Seeds are undeveloped plants or in simple terms “baby” plants. • All flowering plants produce seeds. • There are two main types of seeds. • Monocots which have one cotyledon. • Dicots which have two cotyledons.

  11. Seed Structures and Functions

  12. Seed Diagram

  13. Review Questions 1. Which observation of a plant supports the inference that photosynthesis can take place? (1) a strong, sweet smell (2) a dry, rough texture (3) a green color (4) a smooth stem

  14. Review Questions 2. A plant forms new tissue at the tips of its roots and stems. This new tissue growth is a direct result of (1) circulation (2) coordination (3) cellular respiration (4) cell division

  15. Review Questions • Which letter in the diagram represents the stored food that the new plant will use for early development? (1)A (3)C (2)B (4)D

  16. Review Questions 4. Several tomato plants are grown indoors next to a sunny window. The plants receive water and fertilizer and remain on the windowsill. What will most likely happen? (1) Most of the leaves on the window side will wilt and die. (2) The roots of the plants will grow upward from the soil. (3) Water droplets will collect on the leaves facing away from the window. (4) The stem will bend toward the window.

  17. Review Questions 5. What is the name of the process represented in this diagram that produces the carbon dioxide? (1) photosynthesis (3) respiration (2) metamorphosis (4) fertilization

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