Scott Foresman Chapter 1 Lesson 2 - Life Science

1. Chapter 1
Lesson 2
What Do Flowers and Cones Do
October 15, 2012

2. 10-15-12
Chapter 1 -
Lesson 2 petal
Vocabulary
pollen pollinate
1. petal - an outside part of a flower that is often colored.
2. pollen - a fine yellowish powder in a flower.
3. pollinate - to carry pollen to the stemlike part of the
flower.

3. Science Background
· Seeds which contain a plant embryo surrounded by a protective
seed coat, grow inside flowers.
· Flowers are made up of petals and a central pistil (the female
part of the flower) that is surrounded by stamens (male flower
parts). Pollen grains form on stamen tips (anthers).
· During pollination, pollen moves onto the stigma, the sticky tip of
the pistil. Pollination allows the mixing of male and female
gametes, which is necessary for fertilization to occur.
· Plants produced by sexual reproduction inherit genes from both
parent plants, are unique, and may have traits that differ from
those of parent plants. Asexual plant reproduction occurs
through the division of one plant. Plants produced in this way
inherit genes from only one parent and have exactly the same
traits as the parent plant's.
· Plants can reproduce through vegetative propagation using
cuttings, tubers, bulbs, and layering. Tubers, such as potatoes,
have yes that may sprount new shoots. Bulbs, such as tulips
daffodils, onions, and garlic, have lateral, or branch, buds that
develop into new bulbs.

4. Quick Quiz #1
1. What are petals?
2. Where are two places you might
find pollen in a flower?
3. How does the center part of a flower change as seeds
grow?
H.O.T. Remember any part of a plant that has seeds is a
fruit. Therefore, which of the following are fruits and
which are vegetables: an apple, a cabbage, a pepper, a
tomato, and celery?