WELCOME TO MS. GRACIANO’S CLASS! SEPTEMBER 16, 2015 DO NOW  Pick- up materials on table  3 markers of different colors, glue bottle, papers  Complete warm-up  Have homework on desk

AGENDA  Warm-up  Test 1 Reflection  Seed Dispersal Overview  Parts of a Plant Activity  Closure

BY THE END OF CLASS TODAY… I will be able to:  Share examples and explain the importance of seed dispersal  List and explain the parts of the plant  Define plant tropism

WARM UP

TEST 1 REFLECTION

SEED DISPERSAL

 Before they can grow into new plants, seeds need to leave the seed pod. If all the seeds a plant produced landed just underneath the parent plant, they would be too crowded, and might not have enough light or water to grow and develop properly.  The various methods of seed dispersal are designed to ensure that as many seeds as possible have a good chance of growing up to produce seeds of their own. The size and shape of the seedpod or the seeds influences how they are dispersed.  The main methods plants use to disperse their seeds to places with better growing conditions than directly under the parent plant include gravity, animals, force, wind and water. Seed dispersal is the movement or transport of seeds away from the parent plant.

PARTS OF A PLANT

PART OF PLANTS: ROOTS  All plants have structures that can be described as roots.  Roots soak up water from soil prevent the plant from falling over.  Roots acting like the anchor into the ground and help the plant grow.

Types of Roots Tap Roots Thick roots that go deep into the ground. Ex: Carrot, beet, radish Fibrous Roots Thin strands that spread for more surface area.

PARTS OF PLANTS: STEMS  Stems connect the roots to the leaves, as well as support the leaves into the air.  Within the stem are tube-like tissues that transport the necessary molecules back and forth.  Xylem are tissues that transport water and other nutrients from the soil up to the leaves.  Phloem are tissues that transport sugars from the leaves down to the rest of the plant.

Cross Section of a Stem

PARTS OF PLANTS: LEAVES PART I  Leaves carry out photosynthesis by absorbing carbon dioxide through the stomata (small opening).  Each stoma are surrounded by cells called guard cells that open and close to allow carbon dioxide to enter and oxygen to leave.  During the day when temperatures are hottest the guard cells close to prevent transpiration, the evaporation of water out of leaves.

PARTS OF PLANT: FLOWER  The flower acts as the reproductive part of the plant.  It contains pollen and ovuoles (eggs).

CLOSURE

ON A PIECE OF PAPER COMPLETE ONE OF THE FOLLOWING:  SEED DISPERSAL IS IMPORTANT BECAUSE…  THE PARTS OF A PLANT ARE…  THE FUNCTION OF THE STEM IS TO…