Cell Diversity- SAQs audio.docx

**[Questions]** 1. What is a cell? A cell is the basic unit of life and the smallest structure capable of displaying the characteristics of life. 2. What is a tissue? A tissue is a group of similar cells working together to carry out a particular function. 3. Give two examples of plant tissu...

**[Questions]** 1. What is a cell? A cell is the basic unit of life and the smallest structure capable of displaying the characteristics of life. 2. What is a tissue? A tissue is a group of similar cells working together to carry out a particular function. 3. Give two examples of plant tissues. Dermal tissue and vascular tissue 4. Give an adaptation of dermal tissue. Dermal tissue has adapted to have a waxy cuticle which acts as a barrier to stop entry of microbes. 5. Give an adaption of vascular tissue. Vascular tissue has adapted to have xylem walls are strengthened with lignin. 6. Give two examples of animal tissues. Muscle tissue and nervous tissue. 7. Give an adaption of muscle tissue. Its adaptation it that it has myosin and actin filaments that allow for contractions. 8. Give an example of nervous tissue. Its adaptation is that it is insulated with myelin to speed up transmissions. 9. What is an organ? An organ is a group of similar tissues working together to carry out a particular function. 10. Give an example of a plant organ. The leaf and stem. 11. Give an example of an animal organ. The heart 12. What is an organ system? An organ system is a group of similar organs working together to carry out a particular function. 13. Give an example of an animal organ system. The nervous system 14. What is tissue culture? Tissue Culture is the growth of cells outside of an organism on a nutrient medium. 15. Give a use of tissue culture. Cancer research Growing human tissue for organ transplants. 16. Give a requirement of tissue culture. A suitable temperature  Nutrients that are required for growth