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Gymnosperms and Angiosperms Monocotyledons and Dicotyledon.

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Presentation on theme: "Gymnosperms and Angiosperms Monocotyledons and Dicotyledon."— Presentation transcript:

1 Gymnosperms and Angiosperms Monocotyledons and Dicotyledon

2  In order to be able to identify a plant and put it in the right family, you need to know the terminology to use

3 gymnosperm – “naked seed” no true fruits no flowers

4  Angiosperm means “covered seed”  Have flowers  Have fruits with seeds  Live everywhere – dominant plants in the world  260,000 species (88% of Plant Kingdom)  Angiosperms are the most successful and advanced plants on earth

5  Angiosperms are divided into monocots and dicots  The first leaves first of a young plant develop and are called as cotyledons (seed leaves)  Monocots have one cotyledon (corn, lily, etc).  Dicots have two cotyledons (bean, oak, etc).

6 FEATUREMONOCOTSDICOTS Cotyledons12 Leaf venationparallelbroad Root systemFibrousTap Number of floral parts In 3’sIn 4’s or 5’s Vascular bundle position ScatteredArranged in a circle Woody or herbaceous HerbaceousEither

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10  Monocots – blade like leaf blade – wrap around the stem – no petiole – have main vascular bundles running parallel along length of leaf  Dicots – Have both a leaf blade and a petiole – single midrib (Vascular bundles) with branches

11 ◦ Dicots form one primary root ◦ Monocots branch to form the fibrous root

12  Tap Root ◦ Have a main central root and may have some lateral branching

13  Fibrous ◦ Have many roots of equal size and a lot of lateral branching ◦ Fibrous roots are generally much more diffuse and closer to the surface

14 ◦ Dicots –have sepals and/or petals in multiples of four or five ◦ Monocots – have sepals in multiples of threes

15 Monocot stemDicot stem

16 Monocot stem Dicot stem

17  Herbaceous stems ◦ Lack secondary growth - because plants only live one year/growing season (annuals)

18 ◦ Stems remain soft and flexible ◦ Buds lack protective scales (don’t need to survive harsh conditions)

19  Woody stems ◦ Plants living and growing over multiple seasons have secondary growth (xylem, phloem) increasing diameter of the stems

20  These are a type of plant that reproduce by seeds not contained in a flower  angiosperms  gymnosperms  ferns

21  These are a type of plant that reproduce by seeds not contained in a flower  angiosperms  gymnosperms  ferns

22  The flowering plant group which is the biggest in the plant kingdom is  A. ferns  B. angiosperms  C. gymnosperms

23  The flowering plant group which is the biggest in the plant kingdom is  A. ferns  B. angiosperms  C. gymnosperms

24  Angiosperms differ from mosses, ferns and fungi in that they have  A. True leaves, stems and roots  B. Mycelium  C. Fronds

25  Angiosperms differ from mosses, ferns and fungi in that they have  A. True leaves, stems and roots  B. Mycelium  C. Fronds

26  Angiosperms are the most advanced plant group.  True False

27  Angiosperms are the most advanced plant group.  True False

28 Dicot Moncot

29 Dicot Moncot


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