1. Plants

2. Plants in the Food we Eat
Is it a root? Is it a stem? Is it a leaf? Is it a flower? Is it a fruit? Is it a vegetable?
Plants are classified by their characteristics or features: roots, stem, leaf, fruit and vegetable

3. a protective covering that surrounds the seed
makes seeds.
makes the plant's food.
carries water and food to the rest of the plant.
anchor the plant in place and absorb water and other minerals from the soil.

4. Roots
Roots are classified either as taproot system or fibrous root system.
Taproot system: A root with a few branches that is very thick and swollen. Carrots are an example.
Fibrous root system: Some plants have a root system like this. It is a bunch of very fine roots. Grass plants have a fibrous root system.

5. Stems
Xylem cells moves water from the roots to the leaves. The phloem cells move the food.
Where the leaves join the stem is called the node. The space between the leaves and the stem is called the internode.

6. Stems (cont.)
Supports the other parts of the plants that are above ground. Holds up plant parts toward the sun so the plant can receive the light energy that it needs
Stems protect the important stuff on the inside. Protects the vascular system of the plant from environmental (weather), mechanical, insect or animal damage. 
Stems serve as transport systems in plants
Small tubes from the roots go up through their stems
Water and minerals are carried from the roots to the leaves of the plant

7. Leaves
Simple leaves are made of a single leaf blade connected by a petiole to the stem. An oak leaf or a maple leaf are examples.
A compound leaf is a leaf made up of separate leaflets attached by a petiole to the stem like an ash or a locust.

8. Leaves (cont.)
Cuticle is the waxy coating on the outer surface of a leaf, which offers protection. Veins carry water and nutrients within the leaf.

9. Fruit
The fruit is the ripened ovary of a plant containing the seeds. After fertilization, the ovary swells and becomes either fleshy or hard and dry to protect the developing seeds.
Many fruits help seeds spread (maple seeds).
Many things we call vegetables are really fruits such as tomatoes, cucumbers, and beans.

10. Flower
Flowers are important in making seeds. The female part is the pistil. The pistil usually is located in the center of the flower and is made up of three parts: the stigma, style, and ovary. The stigma is the sticky knob at the top of the pistil. It is attached to the long, tube-like structure called the style. The style leads to the ovary that contains the female egg cells called ovules.

11. Flowers(cont.)
The male parts are called stamens and usually surround the pistil. The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up.

12. Structure of a Flowering Plant

13. Flower(cont.)
The male gamete is made in the filament and is found inside the pollen grain.
The female gamete is found in the ovary and is called an ovule.
Petals attracts insects for pollination.
Nectary secrete a sugary fluid or nectar which serves as a food source for pollinating insects.

14. Flower(cont.) Sepals encloses and protect bud.
Carpel is the female reproductive organ of a flower, consisting of an ovary, a stigma, and usually a style. It may occur singly or as one of a group.

15. Further Classification
Vascular
Have tissues that make up the organ system that carries water, nutrients, and other substances throughout the plants.
Nonvascular
Have no vascular tissue and use other ways to move water and substance.

16. What it looks like?

17. Classifying Plants Nonvascular, Seedless Plants: Small (usually only 2
cm to 5 cm in height); Green stems; reproduces by
spores, threadlike roots; grows in damp areas.
Vascular, Seed-bearing, Non-flowering, Non-fruit
bearing: Vascular plants that produce seeds (usually
found in cones), do not have flowers, and typically
have needle or scale-like leaves.
Vascular, Seedless, Plants: Reproduces by spores
often found on the underside of the leaves; can be
various sizes because they have vascular tissue
Vascular, Seed-bearing, Flowering, and Fruit
bearing, Monocot: Flower parts in multiples of three;
leaves usually narrow and long; parallel veins; seeds
have one cotyledon
Vascular, Seed-bearing, Flowering, and Fruitbearing,
Dicot: Flowering parts in multiples of four or
five; leaves have a network of branching veins; seeds
have two cotyledons

18. Plants Adaptation Adaptations help a plant to:
· Get Sunlight, Water, Air, or Nutrients
· Not be eaten
· Stay put
· Reproduce

19. Characteristics of Plants
All plants are made up of eukaryotic cells.
They usually have leaves, stems and roots.
They vary in size and shape.
As plants evolved from aquatic to land forms, they changed in structure and function.
The changes included how they reproduced, supported themselves and moved substances from one part of the plant to another.

20. Seedless Plants
Seedless plants includes nonvascular and vascular types.
Bryophytes-mosses and liverworts –are seedless nonvascular plants.
They have no true leaves, stems, roots, or vascular tissues and live in moist environments.
For bryophytes, reproduction is usually by spores.

21. Seedless Plants(con’t)
Bryophytes may be considered pioneer species because they are some of the first plants to grow in new or disturbed environments.
They change the environment so that other plants species can grow there.
Club mosses, horsetails and ferns are seedless vascular plants.
They have vascular tissues, a pipeline
that moves substances throughout the plant.

22. Seedless Plants(con’t)
Like bryophytes, these plants may reproduce by spores.

23. Seed plants
These plants have adapted to survive in nearly every environment on Earth.
Seed plants produce seeds and have vascular tissue, stems, roots and leaves.
Vascular tissues transport food, water and dissolved substances in the roots, stems, and leaves.

24. Seed Plants(con’t)
The two major groups of seed plants are gymnosperms and angiosperms.
Gymnosperms generally have needlelike leaves and some type of cone.
Angiosperms are plants that flower and are classified as monocots or dicots.
Seed plants provide food, shelter, clothing, and many other products.

25. The Great Celery Experiment

26. Structure of a Flowering Plant
Male part of the flower-Stamen: Makes up all male parts. Pollen: Male sex cell, similar to sperm. Anther:Sac-like structure on top of the filament. Filament: Short stalk that holds the anther. Female parts of the flower-Pistil: Makes up all female parts. Ovules: Female sex cell, similar to the egg. Stigma: Sticky part of the system, catches pollen. Style: Tube that leads from the stigma to the ovary. Ovary: Place where ovule is fertilized by the pollen. Also turns into a fruit or seed coat. 26

27. becomes the fruit.
Reproduction
During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary. Male reproductive cells travel down the tube and join with the ovule, fertilizing it. The fertilized ovule becomes the seed, and the ovary becomes the fruit.

28. Reproduction (cont.)
Petals are also important parts of the flower, because they help attract pollinators such as bees, butterflies and bats. You can also see tiny green leaf-like parts called sepals at the base of the flower. They help to protect the developing bud.

29. Pollination
Pollination is the movement of pollen from a stamen to a pistil.
There are two types of pollination:
Wind-pollinated: a form of pollination where pollen is distributed by the wind Ragweed
Insect-pollinated: a form of pollination where pollen is distributed by insect, mostly bees. Entomophily is another name for insect pollination.
Rose sweet peas Viola Lily

30. Pollination (cont.)
Cross-pollination: fertilization by transfer of pollen from the anthers of one flower to the stigma of another flower.
Self-pollination: fertilization by transfer of pollen from the anthers to the stigma of the same flower.

31. What do plants do? All plants are alike in one way. Water
They need three things in order to survive
Water
carbon dioxide
energy from sunlight
What do you suppose the plants use these things for?
Classify – to sort into groups based on similarities and differences

32. Plants and some protists conduct photosynthesis.
They turn it into sugar!
photosynthesis – a process by which plants change light energy from the sun and use it to make sugar
Plants and some protists conduct photosynthesis.

33. Photosynthesis A movie of photosynthesis
chlorophyll – the green substance found in plants that traps energy from the sun and gives plants their green color
carbon dioxide – a gas found in air
As a plant makes sugar, oxygen is released
When the plant uses the sugar, water and carbon dioxide are released.

34. How Do Plants Get Energy
1. Plant leaves change light
energy into energy
the plant can use.
2. Stomata are tiny holes on the bottom of the leaf that let air (CO2.) in and (O2)out.
3. Roots get water and minerals directly from the soil.
They get sunlight, water, and air (CO2.)
4. The veins of a leaf bring water and minerals to the leaf from the stems and roots.

35. Plants reproduce differently
Reproduce – it means “to make more of the same kind”
Plants reproduce differently
Plants are classified by characteristics.
Plants that make seeds
Plants that do not make seeds
Flowering Plants
Conifers
Ferns
Mosses

36. Because of this process
Scientists are able to classify living things by the way they get their food.
Plants are producers (autotrophs)
producer – it is a living thing that uses sunlight to make sugar. This sugar feeds others.