WHAT IS A PLANT Big Q What feature

WHAT IS A PLANT Big Q: What feature defines most plant life cycles?

ENGAGE - STONE AGE PLANTS ➤ Name one of the plants discussed in the video and its medicinal use.

EXPLORE - HISTORY OF PLANTS ➤ The first plants on Earth were from the ocean. How do you suspect plants moved onto dry land? ➤ What are some kind of adaptations they needed in order for this to work?

EXPLAIN - PLANT LIFE CYCLE ➤ Plants alternate between two phases: ➤ 1. Sporophytes - Diploid phase (2 n) ➤ 2. Gametophytes - Haploid phase (n) ➤ Sporophytes produce haploid spores through meiosis that grow into gametophytes (sperm and egg. )

EXPLAIN - SEEDLESS PLANTS Green Algae stay in haploid stage for long periods Mosses and Bryophytes relies on the gametophyte stage Seedless Vascular Plants

EXPLAIN - SEED PLANTS Gymnosperms bear their seeds on the scales of cones Angiosperms bear their seeds inside flowers

ELABORATE - ANGIOSPERMS Cotyledons - seed leaves

EXPLAIN - FLOWERS ➤ Flowers - reproductive organs of angiosperms ➤ Male Part - Stamen Filament - stalk attached to anther Anther - contains pollen grains (sperm) ➤ Female Part - Carpel or Pistil Style - stalk attached to the stigma Stigma - sticky top part that captures pollen Ovary - contains eggs

EXPLAIN - FLOWER ➤ Sepals - protect the ovary of the plant ➤ Petals - used for protection and attraction of pollinators ➤ Fruit - ovary matures to enclose and protect the seeds

EXPLAIN - LIFE CYCLE ➤ Pollination - creation of pollen and transfer to the female parts by: 1. Wind 2. Animals ➤ Fertilization - pollen fertilizes the egg ➤ Germination - seed falls to the ground and roots itself

ELABORATE - TEMPERATURE AND SEED GERMINATION ➤ Investigate how temperature affects the rate of germination of lima beans

EVALUATE - SEED DISPERSAL ➤ How are seeds from the fruit dispersed?