1 (a) (i) identify specimens A and B without reasons (ii) Give four differences between specimens A and B .
Using a sharp knife, scalpel or blade, cut specimen B into two equal halves to expose the internal structures.
b. (i) Make a labeled drawing of 8 cm to 10cm long to show the observable internal structures of specimen B.
(ii) State the dispersal mechanism of specimen B.
(C)(i) Identify C, D and E without reasons. (ii) State two features, each of specimen C, D and E which adapt to their habitats.
2. The height (cm) of 20 students in a class are as follows:.155, 157, 151 169, 162, 151, 149, 165, 169,176.169, 179,173, 179, 173, 169, 157, 155, 165, 157, 197 and 162.
Use them to answer the following questions:
(a) Make a frequency distribution table of class interval of five of the different heights (b) what is the modal height? (ii) median height? (ii) mean height?
(c) (i) Construct a histogram showing the variation of height, amongst the students with the heights on the horizontal number of students on the vertical axis.
(ii) How many students fall into each or the height axis and number of students on the vertical axis.
(iii) How many students have height between 155 and 179?
(iv) Find the difference in height between shortest and the tallest students.
(d) (i)What type of variation is height? (ii) Mention three other examples of the type of variation in (d) (i) above.
3.(a) identify specimen F, G, H, I, J, and K without reasons. (b)(i) State one observable feature by which each of specimens F,G and H obtain their food.
(ii) State three observable features which contribute to the survival of specimen I.
(c)Mention two observable characteristics each, of specimens J and K. (ii) Name the two bones, each, which articulates with specimens J and K
(iii) Make a labeled drawing of 8cm to 10 cm long of specimens K.
(a) Explain the term osmosis.
(b) Describe an experiment to show that the xylem tissue conducts water from the rot to the shoot.
(c)(i) Explain what happens to a red blood cell when placed in a hypotonic solution
(ii) Mention three conditions that may cause haemolysis
(a) Describe the water cycle using an annotated diagram (s) only.
(b) What is the importance of water tc living organisms?
(a) Name the four levels of organisation in living organisms.
(ii) Explain two of the levels of organisation named in (a)(i) above
(a) List five classes of food other than carbohydrates.
(b) Explain why glucose is taken by an athlete ready for a race rather than corn meal.
(c) Describe the test for starch.
(a) State five different methods used in vegetative propagation in plants giving an example in each case.
State five (i) advantages and (ii) disadvantages of vegetative propagation.
(a) What is a sense organ?
(b)(i) State two main functions of the ear
(ii) Explain the mechanism involved in one of the functions stated in (b) (i) above.
(c) With the aid of a large labelled diagram, illustrate the eye defect of short-sight and its correction.
During blood transfusion, agglutination could be prevented if a patient having blood group O is given blood
from group
- A. AB
- B. A
- C. O
- D. B
Which of the following terms is not associated with fingerprint and classification?
- A. Whorl
- B. Contour
- C. Arch
- D. Loop
Which of the following represents Mendel’s second law of inheritance? The factors for two pairs of contrasting
characters are
- A. dependent on each other
- B. on homologous chromosomes
- C. allelomorphic
- D. inherited independently of each other
The concept of use and disuse of parts was postulated by
- A. Darwin
- B. Larmarck
- C. Miller
- D. Wallace
Character which falls to express itself in the first filial generation but emerges in the second is
- A. heterozygote
- B. homozygote
- C. dominant
- D. recessive
Which of the following resources is non-renewable?
- A. Forest
- B. Wildlife
- C. Mineral deposits
- D. Water
Which of the following is not a means of conserving natural resources?
- A. Establishment of national parks
- B. Selective logging
- C. Building of dams
- D. Bush burning
The major reason why foods should be properly covered is that
- A. micro-organisms in air would contaminate the food
- B. hot foods cool off easily when properly covered
- C. the taste of the food is maintained when covered
- D. all water easily evaporates from uncovered food
Trypanosomiasis is associated with
- A. cockcroach
- B. mosquito
- C. housefly
- D. tsetse fly
Which of the following best describes the adaptation of the earthworm to its habitat?
- A. Living in burrow during the day to prevent desiccation
- B. Burrowing into soft soil to store food
- C. Possession of segmented body to reduce movement
- D. Possession of a few bristles for defence
Parasitism can best be defined as an association between two organisms in which
- A. both organisms benefit
- B. one organism gains and the other neither gains nor loses
- C. both organisms suffer some disadvantages
- D. one organism gains and the other loses
In commensalism
- A. one of the organisms gains and the other loses
- B. both organisms benefit from the association
- C. one of the organisms gains while the other neither gains nor loses
- D. one of the organisms produces extra cellular Digestive juices.
Which of the following is not released during decay of living matter?
- A. Ammonia
- B. Oxygen
- C. Carbon dioxide
- D. Heat energy
Which of the following organisms will not bring about decomposition?
- A. Earthworm
- B. Bactenum
- C. Mould
- D. Spirogyra