1. Choose the correct option. (2 marks) a) Which of the following tissues enables grass to grow back once it has been cut? (i) Apical meristem (ii) Lateral meristem (iii) Intercalary meristem (iv) Vertical meristem b) Plasmolysis in a plant cell is defined as (i) the lysis of plasma membrane in a hypotonic medium (ii) the shrinkage of the cytoplasm in a hypertonic medium (iii) the shrinkage of the nucleoplasm (iv) none of these 2. Answer the following in 10-20 words: (2 marks) a) Explain how the exchange of gases occurs across the plasma membrane of cells. b) List two important functions of columnar epithelium. (8 marks) 3. Answer the following questions in 30-40 words: a) Explain how chromosomes, chromatin, and chromatid are related. b) Differentiate between voluntary and involuntary muscles. c) List any two reasons why the epidermis is important for plants. d) Why are lysosomes known as the suicide bags of the cell? 4. Answer the following questions in 60-80 words: (8 marks) a) Compare and contrast xylem and phloem. b) Why are nervous tissues important? Draw and label a diagram of a nerve cell.
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Choose the correct option. (2 marks) a) Which of the following tissues enables grass to grow back once it has been cut? (i) Apical meristem (ii) Lateral meristem (iii) Intercalary meristem (iv) Vertical meristem b) Plasmolysis in a plant cell is defined as (i) the lysis of plasma membrane in a hypotonic medium (ii) the shrinkage of the cytoplasm in a hypertonic medium (iii) the shrinkage of the nucleoplasm (iv) none of these 2. Answer the following in 10-20 words: (2 marks) a) Explain how the exchange of gases occurs across the plasma membrane of cells. b) List two important functions of columnar epithelium. (8 marks) 3. Answer the following questions in 30-40 words: a) Explain how chromosomes, chromatin, and chromatid are related. b) Differentiate between voluntary and involuntary muscles. c) List any two reasons why the epidermis is important for plants. d) Why are lysosomes k