Cikgu Zahira..

Salam..x pasal2 si azymah nie suruh aku ceritakan kat dia pasal Biology..Form 4..Pay Attention bagi sesape yang nk bace..Nie chap.2..
TYPES AND BASIC TISSUE FOUND IN PLANTS..

Terbahagi kepada :

• Epidermal tissue-The outermost layer that covers the surface of the plant/The walls of the cells are covered with cuticle,a long waxy waterproof coating..(Rujuk buku rujukan utk Diagram)

The cuticles reduces water loss from evaporation and protect the plant from mechanical injury also prevent infection from pathogen(bacteria)...
The epidermal cells are called Guard Cells to control the opening of the stoma..
The root of epidermal cells have root hair to increase the surface area for absorption of water.

• Ground tissue-Parenchyma tissue,Collenchyma tissue and Sclerenchyma tissue

Parenchyma tissue-have large vacuole to store sugar and starch/Turgid cells give support to herbaceous plants..(Buku teks m/s 30 utk Diagram)
Collenchyma tissue-cell have thickened cell walls at the corners/Support herbaceous plant and young stems..
Sclerenchyma tissue-The cell have cell walls uniformly thickened by lignin/The cells are dead/Give mechanical support mature regions of a plant..

• Vascular tissue-xylem and phloem

Xylem-No cytoplasm/transport water and dissolved mineral salt from root to the other part the plant/Provide support and mechanical support(Buku Teks m/s 31)
Phloem-Consist of sieve tube and companion cells/transport organic compound synthesised in the leaf to the other part of the plant

• Meristematic tissue-consist of small cells with thin walls and large nucleus/Located at the tips of roots and the bud of the shoots/Actively dividing cells which have not undergone differentation(Buku teks m/s 30)

Harap2 cik azymah paham yer.. Klu x,amiklah tuisyen Biologi..huahuahua..:)