Test 3- Outline+2c

Test 3- Outline+2c - NOTES FOR BIOLOGY 1002 SECTIONS 001...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
NOTES FOR BIOLOGY 1002 SECTIONS 001 and 002 Outline 2C CHAPTER 21 The Diversity of Plants >THE PRIMITIVE PLANTS Note: these organisms are covered in chapter 19 of the textbook Since plants (like other organisms) originated in the water, the most primitive plant types are the algae The three divisions that make up the algae: Red Algae Brown Algae Green Algae All three divisions share some common traits: -Most or all of life cycle in water Tidal forms -No vascular tissue -No leaves, stomata or cuticle -Variation in dominant form of the life cycle In some, sporophyte is dominant In some, gametophyte is dominant -Sporophyte and gametophyte can be Heteromorphic or Isomorphic Heteromorphic means the sporophyte and the gametophyte have a different overall appearance Isomorphic means the sporophyte and the gametophyte have a similar overall appearance The main distinguishing characteristics of the Kingdom Plantae are -Eukaryotic -Multicellular - Photosynthetic autotrophs -Varied and complex life cycles - Cell walls made of cellulose -Food reserve stored as starch or oils
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
In addition to these characteristics, the plant kingdom shows a range of traits that appeared as plants made the transition from their origins in water onto the land. Some of these new traits are: Anchoring mechanism: absorb water and minerals Roots Conducting vessels Xylem and Phloem Increased support mechanism Lignin External protection Cuticle Mechanism for gas exchange Stomata Xylem and Phloem are parts of the plants vascular tissue system . They are vessels that transport water, minerals, nutrients (especially sugars) and hormones throughout the plant. Plants
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/29/2008 for the course BIOL 1002 taught by Professor Pomarico during the Spring '08 term at LSU.

Page1 / 5

Test 3- Outline+2c - NOTES FOR BIOLOGY 1002 SECTIONS 001...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online