Book A
Chapter 4
Introduction to Plants
Section 1-- The Plant Kingdom
plants -- produce own food
-- are multicellular
-- plant cells have a nucleus
-- cell wall
-- chloroplasts
Plants need to transport food and water to
different sections of their bodies. Some have a system
of vascular tissue which also helps support the plant.
Reproduction in plants is usually sexual.
Fertilization occurs when sperm and egg unite.
Asexual reproduction can sometimes occur.
Vegetative propagation is a form of asexual
reproduction. Some plants can be reproduced with cuttings.
Other, such as strawberries, form runners to produce new plants.
Tropisms
Gravity tropism
Phototropism
Section - 2 Photosynthesis and Light
Photosynthesis is a series of chemical reactions that take carbon dioxide
from air and water from soil to produce
a sugar (food) and oxygen. Light and
chlorophyll (found in chlorophlasts ) must be present.
