Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
Botany: Plant Science Vascular and Non-vascular
Asexual and Sexual Reproduction
Characteristics of Plants
● Produce their own food from water, sunlight, and dissolved minerals
● Plant cells have chlorophyll, cell walls, and large vacuoles
● Either vascular or non-vascular
● Reproduce asexually or sexually
Plant Identification
● How many plants are in this photo?
● How are they different?
Classifications
● Plants are either vascular or non-vascular
Non-vascular plants-Also known as Bryophytes
-*Can not store or transport water (Why?)
-*Three classes include mosses, hornworts, and liverworts-Found typically in damp environments (Why?)
-*Most are small and grow low to the ground
Vascular plants-*Specialized structures: Xylem and
Phloem for transporting water-*Transport water in from roots up to
leaves-Defining structures such as roots,
stems, and leaves-Most plants are vascular (trees, grass)
Plant reproduction
● What is the difference between these ways of growing new plants?
(Note the where the roots are growing)
Asexual Reproduction
● *Does not combine gametes (egg and sperm)
● *Clone of old plant (some variation may apply)
● Could grow new plant on part of original or from spores (sporophyte)
● Algae is an example
Vegetative Reproduction
● Runners: stems grow above ground (strawberry)
● Bulbs: short stems at bottom, usually round plants underground (onion)
● Tubers: develop from the stem or root, can grow new roots on their surface (potato)
Plant Reproduction
*Gametes from male and female are joined
● *Seeds are female gametes and pollen is male gametes
● Pollination leads to fertilization
● *Seed dispersal: act of spreading seeds
● Plants use wind, animals, and bugs to spread gametes
Reproduction Benefits and Disadvantages ● What are one advantage and
disadvantage to both asexual and sexual plant reproduction?