6.L.1.1

• Animals and plants have a great variety of body plans and internal structures that contribute to their being able to make or find food and reproduce.

• The process of sexual reproduction in flowering plants takes place in the flower, which is a complex structure made up of several parts. Some parts of the flower are directly involved in fertilization and seed production. Other flower parts have functions in pollination.

• A flower is made up of six parts: petals are leaf like, usually colorful structures arranged in a circle around the top of a flower stem. Sepals are modified leaves that encase the developing flower. They are sterile floral parts and may be either green or leaf like or composed of petal like tissue. Inside the circle of petals are the stamens. A stamen is the male reproductive structure of a flower

• At the tip of the stamen is the anther. The anther produces pollen that contains sperm. At the center of the flower, attached to the top of the flower stem lie one or more pistils. The pistil is the female structure of the flower. The bottom portion of the pistil enlarges to form the ovary, a structure with one or more ovules, each containing one egg. When fertilization occurs the ovary grows into the fruit or vegetable. The length of night or dark period controls flowering

6.L.1.2

• One of the most general distinctions among organisms is between plants, which use sunlight to make their own food (photosynthesis) and animals, which consume energy rich foods. Photosynthesis and cellular respiration are complementary processes

• Plants carry on photosynthesis and cellular respiration where food is broken down into energy.

• The requirements of one process are the products of the other.

• Leaves have an epidermis with a waxy cuticle and stomata that help prevent water loss. Guard cells that surround and control the size of the opening in stomata. The loss of water through the stomata is called transpiration/ The opening and closing of guard cells regulate transpiration.