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Classification of Plants

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Presentation on theme: "Classification of Plants"— Presentation transcript:

1 Classification of Plants

2 A plant can be divided into 3 parts

3 Types of Stems Tree – Shrub one main woody stem
Usually over 3 meters tall Shrub Multiple woody stems Normally under 3 meters tall

4 Types of Stems Vine Herbaceous No supporting stem Woody or non-woody
Grasses, bamboo

5 Types of Roots Fibrous no root grows larger than another
can have up to 14 million roots (i.e. rye grass) Help prevent erosion Examples: grasses, marigolds,

6 Types of Roots Taproots Primary root grows larger than secondary roots
Makes it harder to pull them from the ground Examples include carrots, dandelions, beets and radishes

7 Types of Roots Rhizomes Stolons
usually underground, horizontal stem of a plant that often sends out roots and shoots from its nodes. may also be referred to as creeping rootstalks, or rootstocks Stolons similar to a rhizome, but exists above ground, sprouting from an existing stem. Top pic is a ginger rhizome, bottom pic shows red stolons

8 Types of Roots Tuber Corm
thickened part of a stolon that has been enlarged for use as a storage organ. Corm short, vertical, swollen underground stem of a plant that serves as a storage organ to enable the plant to survive winter or other adverse conditions such as summer drought and heat Top pic is a potato (tuber), bottom pic is a corm called Taro (from Tahitian or other Polynesian languages), more rarely kalo (from Hawaiian), is a tropical plant grown primarily as a vegetable food for its edible corm, and secondarily as a leaf vegetable

9 Leaves The leaf is a plant organ specialized for photosynthesis
Starts at the axillary bud

10 Leaf Form Simple Compound One blade per leaf
Multiple blades or leaflets per leaf

11 Leaf Arrangement

12 Compound Leaflet Arrangement

13 Compound Leaflet Arrangement

14 Plant Kingdom Non-flowering Plants Flowering Plants

15 Non - flowering Plants Do NOT produce flowers
. 3 groups Non - flowering Plants Mosses Ferns Gymnosperms Do NOT produce flowers

16 Examples of Mosses

17 Spore-producing capsule
Moss spores

18 Characteristics of Mosses
.Simplest plants .No true roots, No vascular tissues (no transport) .Simple stems & leaves .Have rhizoids for anchorage .Spores from capsules (wind-dispersal) .Damp terrestrial land

19 Fern

20 A leaf (finely divided into small parts)
Fern A leaf (finely divided into small parts) underground stem root

21 spore-producing organs (circinate) young leaf

22 Characteristics of Ferns
.roots, feathery leaves & underground stems .have vascular tissues (transport & support) .Spore-producing organ on the underside of leaves (reproduction) .Damp & shady places

23 Gymnosperms Pine tree

24 needle-shaped leaves

25 Male cones (in clusters) Female cones (scattered)

26 Characteristics of Gymnosperms
.tall evergreen trees .roots, woody stems .needle-shaped leaves .vascular tissues (transport) .cones with reproductive structures .naked seeds in female cones .dry places

27 Question and Answer Pairs
Take one minute to develop a question over the material you just learned. Then, see if you can stump your partner!

28 Flowering Plants . 2 groups Monocotyledons Dicotyledons
. roots, stems, leaves . vascular tissues (transport) . flowers, fruits (contain seeds)

29 Monocotyledons Parallel veins

30 Characteristics of Monocotyledons
. one seed-leaf leaves have parallel veins . herbaceous plants . e.g. grass, maize

31 Dicotyledons Veins in network

32 Characteristics of Dicotyledons
. two seed-leaves . leaves have veins in network . e.g. trees, sunflower, rose

33 Drill Partners With your neighbor, drill each other on the differences between monocots and dicots until you are both certain you can remember them.

34 Plant Classification Plants Non-flowering Flowering 1 seed-leaf
2 seed-leaves Spore-bearing Naked seeds Monocots Dicots Gymnosperms No roots with roots Mosses Ferns

35 Ticket Out the door List three important facts you learned today.


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