All About Plants


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It has everything about plants and i think you clearly will understand each slide! Any request plz comment

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All About Plants

  1. 1. Plants By: Shanatfairy (Shana Thaya) 1
  2. 2. Contents• Life forms we cant live without (pg3)• Plants Make Life Possible (pg4)• Food for Life (pg5)• Plants and People (pg6)• The Source of Many Things (pg7)• Four groups (pgs8-12)• Shoots, Roots, and Other Important Plant Parts (pg13)• Amazing Plants Fact (pg14)• Plant Reproduction(pg15-18)• Flower Structure Quiz (pg19-22)• Answer (pg25) 2
  3. 3. Life forms we can’t live without Plants are one of two major Kingdoms of life forms. There are about300,000 plant species on Earth. Plants are the only life forms that can producetheir own food using energy from sunlight. Plants produce almost all of theoxygen in the air that humans and other animals breathe. Plants are also animportant source of food, building materials, and other resources that makelife possible for Earth’s animals. 3
  4. 4. Plants make life possible• One of the most important things plants do is create oxygen. This makes life on Earth possible for animals. Large areas of plants such as forests and grasslands are needed for creating oxygen. Scientists and conservationists worry that if large areas of uncut forest are not protected, the whole planet’s survival system could be harmed. 4
  5. 5. Food for Life In addition to making food for themselves, plantsmake food for animals. Animals eat many different plantparts. For example, cows, horses, and antelope eat theleaves of grass. Primates, such as monkeys, eat fruits andleaves. People eat almost all parts of a plant includingunderground roots and tubers (potatoes, carrots, andradishes). We also eat leaves (lettuce, spinach), fruits(oranges, apples, bananas), and seeds (rice, wheat, andcorn). Even the bark can be good! The cinnamon on abreakfast roll comes from the bark of a cinnamon tree.However, not all plants are good to eat. Some plants arepoisonous. 5
  6. 6. Plants and People People are able to live all over the Earth becauseplants make seeds that can be stored and carried toother places. This has helped various species ofplant spread to many parts of the world. Think ofwheat, rice, corn, and beans. These plants aregrown all over the world. Without these importantfoods, people’s lives would be very different. Theseeds of these plants are good to eat, full ofnutrients, and can be made into many differentfoods. 6
  7. 7. The Source of Many Things For centuries, plants have been one of the most useful naturalresources in the world. Even today, plants are one of the mostimportant materials people use for building houses, making clothes,cooking, and heating. If you take a moment to think about all thethings that you use each day, you’ll find that plants are the source ofmany of them. Here are some examples:• Breakfast cereal (rice, corn, wheat, soy)• The cardboard box the cereal came in (wood fiber from trees)• The chair and table you sat at for breakfast (wood from trees)• The books and paper you use at school (wood fibre from trees)• The air you are breathing now (oxygen from plants)• The clothes you are wearing (cotton, linen, and hemp from plants) 7
  8. 8. Four GroupsThe plant kingdom consists of a wide range ofspecies. New plant species are being discoveredevery day. All of them fits properly into fourplant groups. 8 (continues…)
  9. 9. Mosses & Liverworts Mosses and liverworts are green plants thatare usually small. Their leaves are often just onecell thick. Neither mosses nor liverworts haveany woody tissue, so they never grow very large.There are about 14,000 species. 9
  10. 10. Ferns Ferns are a very ancient family of plants.Early fern fossils show that ferns are older thanland animals and far older than the dinosaurs.They were thriving on Earth for 200 million yearsbefore flowering plants evolved. Ferns live insheltered areas under the forest canopy, alongcreeks and streams, and in other wet places.They cannot grow well in dry areas. There areabout 12,000 species. 10
  11. 11. Cone Plants Most cone plants, or conifers, are trees. Theyrepresent some of the oldest and largest livingspecies on Earth. Conifers are often calledevergreen trees, because their leaves (thinneedles) usually remain on the trees all year.They have no flowers or fruits. Instead, seedsappear on cones and are scattered by the windor by animals. There are about 650 species. 11
  12. 12. Shoots, Roots, and Other Important Plant Parts• The basic plant structure includes two organ (a part of the body that does a particular job) systems: the shoot system and the root system. The shoot system consists of the parts of the plant that are above ground such as leaves, buds, and stems. In flowering plants, flowers and fruits are also part of the shoot system. The root system is made up of those parts of the plant below ground, such as the roots, tubers, or rhizomes. 12
  13. 13. Flowering Plants Flowering plants include many of the mostfamiliar plants. The distinctive feature of this plantgroup is the flower, a cluster of specialized leavesthat help in reproduction. Not all flowers are asbright and obvious as the sunflower blossoms in thepicture. Oaks, ivy, and grasses also produce flowers.Their flowers are not as showy, so people don’talways notice them. All flowering plants produceseeds from which new plants grow. There are about270,000 species. 13
  14. 14. Amazing Plants Plants are the largest and oldest organismson Earth. The tallest plant is a coast redwoodtree in California in the United States. It stands112 m tall. The oldest organism on Earth isthought to be the creosote bush. This plant livesin California’s Mojave Desert. One of these smallcircular bushes was found to be nearly 12,000years old! 14
  15. 15. Plant Reproduction – Flower Structure antherstamen filament petal sepal pedunclePetal - Plays an important part in pollinationSepal - Protects the other floral parts against dying out and fungal attack. There arethe same number as there are petals, and they are usually in green colour.Receptacle - The swollen tip of the flower stalk. It is base on which the other parts of 15the ilower stand.
  16. 16. Carpel – The female part of the flowerStigma =Surface on which pollen grain containing malegametes, may be deposited.Style =Stalk that holds stigma in prominent position anddown which pollen tube may growOvary =Contains the ovule, which encloses the femalegametes. Ovary wall may become part of the fruit. 16
  17. 17. Stamen – The male part of the flowerAnther =Produces pollen grain, containing male gametes,within the sacs.Filament =Stalk that holds anther in position to releasepollen. 17
  18. 18. Pollinations Wind Pollinated Insect-pollinated species species usually are usually solitary or in occurs in dense small groups. groups e.g the grassesDull in colour. Small, Petals Large, brightly coloured or even absent to may be scented, and/orreduce obstruction have guidelines. Base of pollen access to may produce attractive stigma nectarLong, flexible so that Stamens Short and stiff to brushpollen may be easily pollen against body of released visiting insect Long and feathery Stigma Held inside petals togiving a large surface ensure contact with body area to recieve of visiting insect pollenSmall, dry, enermous Pollen Large, sticky, small quantities amounts 18
  19. 19. Have a paper and pen ready to answer the following questions 19
  20. 20. Flower Structure QuizWhat is the name of the structure labelled Xin the diagram? carpel X sepal stamen peduncle 20
  21. 21. Flower Structure QuizWhere is pollen made? 21
  22. 22. Where is the ovule found in a flower? 22
  23. 23. XY 23
  24. 24. 24Get a pen ready to mark
  25. 25. Answers for Quiz What is the name of the structure labelled X in the diagram? stamen Where is pollen made?Where is the ovule found in a flower? 25
  26. 26. They look like easy questions, right? Whatmark did you get out of 4 hope not less than 2because then it means you havent understood anything which means you have to read inbetween lines and go through the ppt AGAIN! 26