Transcript PLANTS
PLANTS GROWTH AND ADAPTATION Plants have 3 organs: • 1. Leaves • 2. Stems • 3.Roots • Draw the picture and Identify Structures. LEAVES • 1. Site of photosynthesis- chloroplasts in top layer of leaf. • 2. Site of gas exchange- stomata in underside of leaf STEMS • 1. Provide structure for the plant • 2. House vascular tissue – A. Xylem- tissue that draws water and minerals up from roots – B. Phloem- tissue that distributes sugar from leaves to rest of plant ROOTS • 1. Anchor plant to ground • 2. Absorb water and minerals from soil Plant Reproduction • Plants have male and female reproductive parts. Female reproductive structures • The pistil -consists of the: 1.Stigma 2.Style 3. Ovary (contains the ovule, or plant egg) Male reproductive structures • The Stamen –consists of: – 1. Anther – 2. Filament – 3. Pollen (plant sperm) Plant Genetics • Pollen is the male plant sex cell, or GAMETE. • The Ovule is the female plant sex cell, or GAMETE. • Gametes are HAPLOID- meaning that they each contain half the genetic material necessary to produce offspring. • After fertilization, a genetically complete organism is formed, with all the genetic information necessary for survival and reproduction. Fertilization • Plant fertilization and seed distribution is carried out by insects, wind, and animals. PHOTOSYNTHESIS • Photosynthesis occurs in the chloroplasts • O2 is released and CO2 is absorbed through the stomata What happens during photosynthesis? • Sunlight provides the energy for the chloroplast to convert carbon dioxide and water to glucose and oxygen. • 6CO2 + 6 H2O C6H12O6 + 6O2 Plant Adaptations • How do plants adapt to their environment? • List some necessary characteristics for plants from the following environments: – 1. Arid – 2. Tropical Rain Forest – 3. Cold, snowy climate – 4. Temperature extremes Pick My Environment • Match the following plants to their proper environment. VOCABULARY Copy and define the following: • • • • • Leaves Stems Roots Chloroplast Haploid • Gamete Pollen Ovule Xylem Phloem Stomata Photosynthesis Adaptation TEACHER NOTES Begin with “BrainPop”- “Plant Growth” and then “Photosynthesis” • Have students create a book mark with the plant information. – Have them draw the leaves, stems and roots on one side, and define the terms on the other side. – Have them return their bookmark to their science teacher for extra credit!