1. Give four differences between bone and cartilage.
2. Give the functions of cartilage.
3. Give difference between xylem and pholem.
4. What is stomata?
5. Why does epidermal tissue have no intercellular space?
6. Name and give the function of each cell of xylem.
7. Why is blood called connective tissue?
8. State the difference between simple tissues of plants.
9. Explain the structure, function and location of nervous tissue.
10. Describe ‘epidermis’ in plants.
Answers
Answer:
bones are pliable cartilages are not, bones are made of calcium and magnesium salts cartilages are made of elastin fibres, bones have havershian canals cartilages do not, bones are vascularised, cartilages are not
cartilages support the softer parts of our body as they are flexible
xylem conducts water and minerals but phloem conducts food
opening on the epidermis of leaf are stomata
to avoid unnecessary transpiration
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Answer:
3) Xylem transports only minerals and waters from the roots. Phloem transports food materials that are prepared by the green parts of the plants to other parts of the plant. ... Xylem is the dead tissues at maturity, but no cell contents. Phloem is the living tissue, but not with the nucleus.
4) any of the very small holes in the surface of a leaf or the stem of a plant that allow gases to pass in and out
7) Blood is considered a connective tissue because it has a matrix. The living cell types are red blood cells, also called erythrocytes, and white blood cells, also called leukocytes. The fluid portion of whole blood, its matrix, is commonly called plasma.
10) Epidermis, in botany, outermost, protoderm-derived layer of cells covering the stem, root, leaf, flower, fruit, and seed parts of a plant. The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.
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