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]
a. Classify the following biological associations under the headings in the table below:
(i) Remora and shark;
(ii) Lichen;
(iii) Cattle and white Egret;
(iv) Tapeworm in the gut of humans;
(v) Flowers and Honeybees;
(vi) Mistletoe and Cacao plant.
| Parasitism | Mutualism | Commensalism |
[6 marks]
b. (i) State three adaptive features of parasites. [6 marks]
(ii) State two effects of parasites on their hosts. [2 marks]
c. (i) What are saprophytes? [2 marks]
(ii) Give four examples of saprophytes. [4 marks]
