Lesson 1- Plant Structure

1. Lesson 1- Plant Structure Ms Jan

2. Plant Structure SLOs • Label the structures on a plant • State the function of different structures on plants

4. Diagram of a simple plant

5. Plant parts and their function • Leaves: absorb sunlight and transform it into food • Stem: carry nutrients and water from the roots to other parts of the plant • Root: absorb water and nutrients from the soil. Also anchor the plant to the ground and often store food • Flower: sexual reproduction through the production of seeds

6. Match the terms to the definitions on handout

7. Lesson 2: Classification of Plants

8. Classification of plants SLOs • Classify plants into angiosperms (monocotyledon, dicotyledon) gymnosperms, ferns, mosses and algae by observing physical features • Identify the factors necessary for seeds to germinate • State what germination means

10. Non - seed plantsalgae/mosses and liverworts/ferns

11. Algae Algae are water dwelling plants – very small (usually) and floating. They make fresh water slimy (green in your fish tank) and in sea water are sea weeds.

12. Red algae

13. Did you Know?...Didymo (Didymosphenia geminata)

14. Mosses and liverworts Simple plants with simple roots and leaves – need damp environment

15. Liverwort • Cross between an algae and moss • Tend to form on tree trucks and stones • Can survive with little water

16. Ferns Ferns have fronds instead of leaves and do not produce seeds – only spores

17. Silver fern (ponga) – our national plant symbol

18. Who am I?? • “I can long and thin, I carry food and water around the rest of the plant. In addition, leaves stick to me” • “I live in damp places. I am very small, and live close to others. I feel soft and spongy underfoot” • “I am very important to a plant, but don’t usually see the light. I have a branched appearance. I am important for keeping the rest of me solidly in the ground. Most importantly I absorb water and nutrients for the rest of me”

19. Seed bearing plantsconifersandangiosperms

20. Conifers Conifers are cone – bearing plants also called ‘gymnosperms’

21. Conifers (gymnosperms) Conifers produce male and female cones and then the seeds mature in the female cones

22. pine miro

23. Tane mahuta New Zealand’s biggest and oldest Kauri tree is a conifer

24. Tane mahuta -5m girth

25. Angiosperms – flowering plants

26. Angiosperms produce flowers and seeds. Flowers are the sex organs of plants. Angiosperms = flowering plants

27. female male

28. Angiosperm monocotyledons Dicotyledons (Monocot) (Dicot) A ‘cotyledon’ is a seed leaf –that is a food storage area in the seed. The developing embryo uses this food to grow until the plant can use photosynthesis for food.

29. monocots Monocots have: • One seed leaf • Parallel veins in leaves (which are usually long and narrow) • Fibrous roots • Flower parts in threes

31. Harakeke (flax) and Ti kouka (cabbage trees) are native monocots

32. dicots Dicots have: • 2 seed leaves • Branched veins in leaves (which are usually broad) • Tap roots with branches • Flower parts in fours or fives

34. NZ trees – do you recognise these? 5 finger Bracken Kauri Puriri Remu Lancewood

35. Plant Types answers Name of plant Group Rose Dicotyledon Kauri Gymnosperm Toi toi Monocotyledon Pohutukawa Dicotyledon Bracken Fern Bull Kelp Algae Beech Dicotyledon Radiata pine Gymnosperm