Diagrams A, B and C are illustrations of different types of teeth in humans. Diagram D is a representation of the arrangement of teeth in the lower jaw of a human.
Study them and answer questions (a) to (f).
(a) (i) Name the type of teeth in diagrams A, B, and C.
(ii) Which of the teeth would be found in positions I, II and IV?
(iii)State one function each of the teeth illustrated in diagrams A, B and C.
(iv) State one reason each for the answers in (a) (iii).
(b)If the tooth labeled B is decayed, list two factors that may be responsible.
(c)What is the total number of each of the teeth labeled A, B and C in the dentition of an adult human?
(d)Which of the teeth would be absent in a rabbit?
(e)(i) Name the tooth that would be found in position III of diagram D.
(ii) In which of the parts labeled I, II, III and IV would a tooth not be found in an infant?
(f) State five ways of caring for the teeth in humans.
Diagrams D, E and F are illustrations of tools used for ecological studies. Study them and answer questions (a) to (c).
(a)(i) Identify diagrams D, E and F.
(b) State one use each of the tools labeled D, E and F.
(c) Describe briefly the use of each of the tools labeled D, E and F.
The diagrams below are illustrations of two organisms. Study them and answer question 3 (a) to (f)
(a)(i) Identify organisms A and B.
(ii) Name the parts labeled I to X.
(b) State one function each of the parts labeled VI, VIII, IX and X.
(c) Name the specific habitats of organisms A and B.
(d) State three structural adaptations of organism A to its mode of life.
(e)(i)State three structural similarities between organisms A and B.
(ii) State three structural differences between organisms A and B.
(f)(i) Name the class of organisms A and B.
(ii) State three reasons for the answer in (f) (i).
(g)State one biological importance of organism A.
(a) Name five vertebrae in mammals with their corresponding locations in the table below.
(b) State one function each of the following parts in a dicotyledonous leaf: (i) palisade; (ii) vascular bundle; (iii) epidermis.
(c)State one function each of the following parts in the stem of a flowering plant: (i) sieve tube; (ii) cortex; (iii) pith.
(d) In a tabular form, state:
(i) two external structural differences between the stem and root of a maize seeding.
(ii) two internal structural differences between the stem and root of a maize seeding
The table below shows the percentage composition of fat and protein in six different meat types. Study it and answer questions 2(a) to 2(d).
Meat Type | Fat (%) | Protein (%) |
A | 07.2 | 21.3 |
B | 25.3 | 10.6 |
C | 20.0 | 22.5 |
D | 03.1 | 28.2 |
E | 12.6 | 17.3 |
F | 13.2 | 14.3 |
a. (i) Which two of the meat types may be recommended for an obese patient? [2 marks]
(ii) State one reason for the answer in 2(a)(i). [1 mark]
b. (i) Which two of the meat types would provide the most energy? [2 marks]
(ii) State two reasons for the answer in 2(b)(i). [2 marks]
c. (i) Which three of the meat types could be recommended for a child suffering from kwashiorkor? [3 marks]
(ii) State one reason for the answer in 2(c)(i) [1 mark]
d. Which of the meat types would most likely be suitable for:
(i) an active teenager; [1 mark]
(ii) a 70-year old human? [1 mark]
e. Which other class of food provides energy? [1 mark]
f. State three uses of fat in the human body. [3 marks]
g. Describe briefly the procedure for testing for fat in a meat sample using a piece of white paper. [3 marks]