Finally science presentation juan david, lineth, emmanuel
- 1. Seed dispersal by water By: Linette Valentina Aguilar Murillo Emmanuel Velez Chalarca Juan David Cardona Ruiz Science Grade 5 The British School Cali Click here to video
- 2. Plants which grow beside water often rely on water to transport their seeds for them. This process is called hydrochory. Characteristics The fruits of most water plants have bouyant, waterproof coverings that allow them to float. They may produce light seeds which float, or there may be fluff that helps buoyancy. What is ? INTRODUCTION Click here to video
- 3. The leaves can be up to 14 centimeters long and have a stem, they are green margins, with parallel veins, light wavy and covered with short hairs that form like the structure of a basket that trap air bubbles, increasing the buoyancy of plant. Pistia Stratiotes Click here to video
- 4. Flower: Regular (actinomorphic). Three separate large white petals. Three sepals, separated, smaller than the petals. Stem of the inflorescence shorter than the leaves, rigid, flattened, and with curved teeth along the edges Leaves held in a rosette. Petiole-free, lanceolate to linear, 5-15 mm (0.2-0.6 in.) Wide, 15-40 cm (6-16 in.) Long, rigid. Jagged blade edges, tooth tips with a spine that curves upward. In the fall, roots up to 50 cm (20 in.) Long wilt. The rosette bud sinks to the bottom, where it spends the winter. stratiotes aloides Click here to video
- 5. Nymphaea are a family of angiosperms of the order Nymphaeales. It consists of 6 genera and some 69 species, which are distributed throughout the planet, although some of the genera have a more restricted distribution. Water Lily Click here to video
- 6. Coconut A coconut has a smooth outer rind, a fibrous husk and a stony central layer pitted whit 3 small “eyes” of soft tissue, through one of which a young shoot and root will emerge at germination. The rich supply of food and water I the coconut enables it to last for a long time on its watery journey. Click here to video
- 7. LOTUS The fruit is a conical-shaped pod filled with seeds, each seed in its own socket or hole. When the seeds ripen, they become loose and when the pod tips down, the seeds are released into the water. some species have pinnate leaves with more than 15 leaflets Click here to video
- 8. Tree up to 15m tall, but in Singapore usually shorter. Bark fissured, flaky, grey to brown with lenticels. Produces a white sap. Leaves (12-30cm long) oval, dark green and glossy, held in dense spirals at the tips of the twigs. Flowers (about 5cm) white appearing at the tips of the twigs. Fruits (5-7cm) spherical or ovoid, with 1- 2 seeds. First green then pink, rosy purple and finally black. The fruits float are dispersed by water. The Pong Pong Click here to video
- 9. Click here to video