observe specimen C carefully and answer the following questions.
(a)(i) State tne class to which specimen C belongs.
(ii) Give three reasons for placing Specimen C in that class.
(iii)State two food items which specimen C feeds on.
(b) State two observation of each of specimen C which adapt it to: (i) its mode of feeding (ii) locomotion
(c) List three observable characters of specimen C which can be inherited.
(ii) If white feather colour (W) Is dominant in chickens over black feather colour (w),
with the aid of qenetic.diagrams show how it can be determined whether specimen C is homozygous dominant or heterozygous dominant.
(a)(i) Specimen A is a flower. Remove all the stamens and three petals from specimen A leaving the special petal.
Make a drawing 10-12cm long of the remaining parts of specimen A and label fully.
(ii) what type of ovary is present in specimen A?
(ii) Give one reason for your answer in 1(a) (i) above.
(iv) Describe the petals and sepals of specimen A.
(v) What is the function of the special petal?
(vi) State three features of specimen A which have led to the success of flowering plants.
(b)(i) What type of fruit is specimen B?
(ii) Give two other examples of the fruit type.
(iil) State the mode of dispersal of specimen B.
(iv) State two biological importance of the class of fruit to which specimen B belongs.
Study carefully specimens H, Jand K and use them to answer questions 4(a) to 4(d).
(a) State the habitat of specimen J.
(b) State (i) five observable features of specimen J;
(ii) how the features in 4(b)(i) adapt specimen J to its habitat.
(c)(i) List two differences between specimens H and J.
(ii) State three similarities between specimen H and the skin of specimen J.
(iii) State how the similar features named in 4(C)(i) above adapt specimen H for its functions.
(d)(i) Classify specimen K into its phylum and class. (ii) Give three reasons for placing specimen in its class.
(iii) List three observable features of specimen K and state how these features adapt it to its mode of life.
A farmer applied different concentrations off cytokinins to his pineapple plants and observed tne development of new shoots Over a period of time.
The result of his observation is shown below.
| S/No. | Conc. of Cytokinin(mg/litre) | No. of new shoots |
| 1 | 0 | 2 |
| 2 | 1 | 5 |
| 3 | 2 | 8 |
| 4 | 3.5 | 12 |
| 5 | 4 | 18 |
| 6 | 4.5 | 25 |
| 7 | 5 | 20 |
| 8 | 6 | 10 |
| 9 | 7.5 | 8 |
| 10 | 8 | 6 |
| 11 | 9 | 5 |
| 12 | 10 | 5 |
(a) Plot a graph to show the relationship between cytokinin concentration and shoot development.
(b) Use the graph to describe the effect of cytokinin concentration on shoot development.
(c) What advice should be given to the farmer based on the results from the graph?
(d) List (2) two substances in plants, (ii) two substances in animals which have similar effect as cytokinins.
Study specimens A, B and C carefully and use them to answer questions (a) to (d).
(a) State the habitats specimens A, Band C.
(b) State (i) two observable features each of specimens A,B and C.
(ii) how the features in 1(b)(i) adapt the specimens to their habitats.
(c) State three Observable differences between specimens A and C.
(d) Make a drawing 8- 10cm long of specimen C and label Tully.
Carefully study specimens J and K and answer questions 4(a) to 4(d).
(a) Name the type of refuse in specimens: (i) J (ii) K.
(b) List three animal vectors of disease causing organisms that breed on a each of specimens J ana K.
(ii) Name four diseases each caused by animal vectors associated with each or specimen J and K.
(c) Name one method of disposal of each of specimens J and K in: (i) rural areas (ii) urban areas.
(d)(i)State four effects of improper disposal of specimen K
(ii) In a tabular form. state five differences between specimens J and K.
(iii) outline one way in which specimen J is of importance to farmers.
Study carefully specimen E and F and use them to answer questions 2(a) to 2(d).
(a) (i) What class of organism do specimen E and F belong to?
(ii) State three similarities between specimen E and F.
(iii) In a tabular form, state three differences between specimens E and F;
(b) State two ways each in which: (i) Specimen E (ii) Specimen F are of economic importance.
(C)(i) State one observable feature each of specimens E and F and how these features adapt the specimens against predation.
(ii) Name the habitats of specimens E and F.
(d) Remove all the wings of specimen E. Make a drawing 8-10 cm long of the dorsal view of specimen E and label fully.
(a) Study carefully specimens A, B, C, and D. copy and complete the table below
| Specimen | Part modified to form specimen | Mode of propagation | Stored material |
| A | |||
| B | |||
| C | |||
| D |
(b) In a tabular form state four observable differences between specimens A and C.
(c) Crush a small portion of specimen D and divide it into three equal parts. (i) Place a portion on a white tile and add two (2) drops of iodine solution.
(ii) Place another portion in a test tube and add one (1) ml of distilled water and shake. Add few drops of sodium hydroxide solution and shake again. Slowly add a few drop of 1% Copper (ii) sulphate solution. (iii) Smear the third part on a filter paper, leave for about five (5) minutes and observe carefully
Study carefully specimens J, K and L and use them to answer questions 4(a) to 4(d).
(a)(i) State the class of each of specimens J, K and L
(ii) State three reasons each for placing each of specimens J, K and L in their classes.
(b) State two structural adaptations possessed by each of specimens K and L for escaping predators.
(c) Make a drawing, 8 – 10cm long of the lateral view of specimen J.
(d) State: (i) two similarities; (ii) two observable differences between specimens J and L.
Study carefully specimens C, D and E and use them to answer questions 2(a) to 2(c).
(a) (i) State the mode of nutrition of specimen D.
(ii) State one way by which each of specimens C, D and E is of economic importance.
(b)(i) Classify specimens C, D and E into their phyla and classes.
(ii) List three observable characteristic features of each of the classes to which specimens C, D and E belong.
(iii) In a tabular form, state two observable differences between C and D.
(C) List four observable features of specimen E that are sensory in nature.
(a) Study carefully specimens A and B and use them to answer questions 1(a) to 1(c).
(a)(i) Name the types of fruit in specimens A and B with reasons.
(ii) Make a drawing, 8-10cm long of the lateral view of specimen B and label fully.
(b) Describe the modes of dispersal of specimens A and B.
(c) In a tabular form, state five differences between specimens A and B.
Study specimens L, M, N, P, Q, R and S carefully and use them to answer questions 4(a) to 4(d).
(a) Name two specimens which can be used for the following: (i) transaction; (ii) protection; (iii) statement.
(b) Stating observable features in specimens L, M, N, P,Q and R, Suggest one reason each for the answers given in 4(a)i), (ii) and (iii) above.
(c) State. (i) two observable similarities; (ii) two differences between specimens P and R.
(d)(i) Sate how observable features of specimen M adapt the specimen to its functions.
(ii) Arrange specimens L, , N and S in the increasing order of complexity of the organism to which they belong.
Study specimens E, F, G1 and G2 carefully and use them to answer questions 2(a) to 2(d).
(a)(i) Name the life process in mammals that is associated with specimens E.
(ii) State two structural similarities between the surface of specimen E and the skin of specimen F.
(b)(i) Name the habitat in which specimen F will function efficiently.
(ii) Explain how two observable features of specimens F adapt the organism to its habitats.
(C)(i) Using the blade provided cut a thin transverse section of the stem of specimens G add two drops of freshly prepared iodine solution to the cut section.
Record your observation and inferences :
(ii) In which part of the stem is food stored.
(iii) Name two tissues used for transportation of materials in specimens G,
(iv) List two supporting tissues present in specimen G,
(d) Make a drawing 10-12 cm long of a cut transverse section of the stem of specimen G, and label fully.
Study specimens A, B C and D carefully and use them to answer questions 1(a) to 1(d).
(a)(i) Name tne phylum to which each of specimens A and D belong.
(ii) Name the habitat or each Specimens A and D.
(b)(i) Name the type of reproduction common to specimens A, B, C and D.
(ii) List the method of reproduction of each of specimens A, B,C and D giving one reason each for the method of reproduction listed.
(c) In a tabular form, state three observable differences between specimens B and C.
(d) Make a drawing 8-10 cm long of specimens A to show the essential parts and label fully.
Study specimens L, M and N carefully and use them to answer questions 4(a) to 4(c).
(a)(i) State the habitats of specimens L, M and N.
(ii) State the modes of nutrition of specimens L. M and N.
(iii) Explain how each of specimens Land M are adapted to their modes of feeding.
(b)(i) Describe briefly the relationship that exists among specimens L, M and N.
(ii) State two ways in which specimen M is of economic importance.
(iii) State one way in which specimen M can be controlled.
(c) Make a drawing 8cm – 10cm long of specimen M and label fully.
(a) Study specimens E and F carefully and use them to answer questions 2(a)(i) to 2(a)(ii).
(i) State the Class to which each of specimens E and F belong.
(ii) List four observable features each of specimens E and F.
(iii) State how each of the observed features in 2(a)(i) adapt each of specimens E and F to their habitats.
(b) Study specimen G and use it to answer questions 2(b)(i) to 2(b)(ii).
(i) Classify specimen G into its phylum and class.
(ii) State four observable features of specimen C.
(iii) Name one habitat of specimen C.
Observe specimens A, B, C and D closely and use them to answer questions 1(a) to 1(e).
(a)(i) Specimen A Into its division and class.
(ii) State three observable features of specimen A which are characteristics of the class mentioned in 1(a)(i) above.
(b) State the relationship between specimen A and: (i) specimen B; (ii) specimen C; (iii) specimen D.
(c)(i) From. your observations of specimens B and C, what type of plant is specimen A? (ii) Suggest the agent of pollination ot specimen B.
(iii) State two reasons for the answer in 1(c)(i) above.
(d) Classify specimen D fully according to origin and structure.
(e) Make a drawing 8 cm 10 cm long of specimen C and label fully.
Study specimens T, V and W carefully and use them to answer questions 4(a) to 4(d)
(a) Classify Specimen T,V and W according to the following criteria: (i) Agricultural classification: (ii) Life cycle.
(b) State two ways in which specimen W is important to human nutrition.
(c) With a scalpel or knife, make a cross Section of specimen T.
(ii) What type of placentation is observed in the cut section of specimen T? Name one example of a fruit with similar placentation as observed in the cut section of specimen T.
Make a drawing 10 cm – 12 cm long of the transverse section and label fully.
(d) Make a transverse section of Specimen V and state: (i) Three Observable differences;
(ii) Three observable similarities; between the transverse section of specimen T and V.
Study specimen Xi and Xii and use them to answer question 4 (e) (i) to 4 (e) (ii)
(e) Carefully remove the bark of specimen Xi to expose the naked part.
(i) State two observable differences between Specimen Xi and Xii.
(ii) If Xi and Xii are planted, what difference will be noticed after a month? State one reason for the answer in 4 (e)(ii)
Observe Specimen Q, under a microscope and specimen R Carefully, Use them to answer questions 3 (a) to 3 (e).
(a)(i) State the phylum to which each of specimen Q and R belong. (ii) State one reason each for the answers stated in 3 (a) (i).
(iii) What is the symmetry of specimen Q and R?
(b)(i) State two observable feature each of specimen Q and R. (ii) State one function each of the features mention in 3 (b) (i).
(c) (i) Name the sex of specimen R. (ii) Give one reason for the answer given in 3 (C) (i).
(d) In tabular form, state four observable differences between specimen Q and R,
(e) Make a drawing 10 cm-12 cm long of the lateral view of specimen Rand label fully.
Study Specimen G and H carefully them to answer question 2 (a) to 2(c).
(a) (i) Name the phylum of specimens G and H.
(ii) State two reasons for the answer given in 2 (a)(i).
(b) Name the structures on specimen G and H that are used for defense.
(c)(i) State two habitat of each of specimen G and H. (i) State two ways in which each of specimen G and H are of economic importance.
Study specimen M, N and P carefully and use them to answer question 2 (d) and 2 (e).
(d) (i) Name the class of organisms to which each of the specimen M, N and P are associated. (ii) State one function common to the specimen named in 2 (d)(i).
(iii) In a tabular form, State four observable difference between specimen M and P.
(e) Explain three features of biological importance in Specimen M.
Study Specimens A and B carefully and use them to answer question 1 (a) to 1 (e).
(a) Classify Specimen p no its division and class.
(b) (i) State the types of leaf arrangements in specimens A and B.
(ii) Name the leaf shape of specimens A and B.
(c)(i) State the type of leaf margin in specimen A. (ii) State the types of venation found in the leaves of specimens A and B.
(d)(i) List three observable similarities found in specimen A and E. (ii) In a tabular form, state four observable differences between specimens A and B.
(e) Make a drawing 8-10 cm long of the leaf of specimen A and label fully.