Question 8

(a) Describe the different methods of natural propagation in plants.
[tex]\[7 \, \text{marks}\][/tex]

(b) Explain the advantages and disadvantages of vegetative propagation of plants.
[tex]\[5 \, \text{marks}\][/tex]
[tex]\[ \text{Total: } 12 \, \text{marks}\][/tex]

---

Question 9

(a) Define the term puberty.
[tex]\[4 \, \text{marks}\][/tex]

(b) Describe changes that occur at puberty for both boys and girls.
[tex]\[4 \, \text{marks}\][/tex]

(c) Describe two determinants of puberty.
[tex]\[4 \, \text{marks}\][/tex]
[tex]\[ \text{Total: } 12 \, \text{marks}\][/tex]

---

Question 10

(a) Describe the importance of the factors that make the soil fertile.
[tex]\[8 \, \text{marks}\][/tex]

(b) Explain how soil fertility can be maintained.
[tex]\[4 \, \text{marks}\][/tex]
[tex]\[ \text{Total: } 12 \, \text{marks}\][/tex]

---

[tex]\[ \text{Total: 36 marks}\][/tex]