Schemes Of Work 100% Completed
Lesson Notes 100% Complete
Necta Reviews 90% Complete
Lesson Plan For Teachers 60% Complete
THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL OF TANZANIA CERTIFICATE OF SECONDARY EDUCATION EXAMINATION
(For Both School and Private Candidates)
Time: 3 Hours Year: 2003
1. For each of the items (i) — (x) choose the correct answer from the given alternatives and write its letter beside the item number.
(i)The release of an egg cell from the ovary is known as:
(ii) Maintenance of a constant internal environment means:
(iii) If a parent cell has 12 chromosomes, how many chromosomes will be in the daughter cells formed after meiosis?
(iv)Viruses are considered to be non-living because:
(v)Study Fig. 1 below carefully, and answer the question below. The aim of the experiment was to investigate the
(vi) Which of the following joints allow movements in one plane only?
(vii) The stamen of a flower consists of:
(viii) An experiment:
(ix) In which of the following tissues can rapid mitotic cell division be seen?
(x) Which of the following series of activities take place together when focusing distant objects?
2. Match the items in list A with the responses in List B by writing the corresponding response beside the item number.
(i)A behaviour which has to be learned
(ii)A sex linked disease
(iii)A cross between the offspring and a homozygous recessive parent.
(iv)A structure connecting the foetus to the placenta in mammals
(vi)Blood capillaries within the Bowman's capsule
(vii)Increase the surface area for absorption of digested food
(viii)The ability of an organism to resist
(ix)A bottle of perfume opened at one corner of the room is soon smelt at the opposite corner
(x)Plants living under permanently low water conditions
3.An ecologist carried out a survey to estimate the number of organisms in a certain dam. The results were as shown in Table 1 below.
Type of organism
Estimated number of organisms
(a) Which of the above organisms are called:
(iii)consumers of the last order?
(b)Which organisms are likely to be finished first in the dam? Give reason(s) to support your answer.
(c) Draw a food web to show energy flow among organisms in the dam.
4.(a) (i) What is gaseous exchange?
(ii) Arrange the following in the correct order: Bronchi, pharynx, bronchioles, nasal passages, alveoli, trachea,
(b)Name the structures concerned with gaseous exchange in:
(i) a mammal
(ii) a young tadpole
(iii) an insect
(iv) an earthworm
(v) a spider
(c) What is the differ nce between the functions of a ligament and a tendon?
5.(a) Study the Figure below and then answer the questions that follow.
(i) Name the parts labelled A, B, C and D.
(ii)State the function(s) of D.
(iii)What is the main difference between guard cells and other epidermal cells?
(b) How is the process of respiration different from burning?
6.Below is a diagram of an imaginary cell. Observe the the questions that follow.
(a) (i) How many chromosomes are there altogether?
(ii) How many pairs of homologous chromosomes are there?
(b) (i) If this cell divides by mitosis, how many chromosomes will be in each daughter cell?
(ii) If the cell divides by meiosis how many chromosomes will each daughter cell contain?
(iii)If the cell divides by meiosis how many daughter cells will be formed?
7. Fig 4 shows a human uterus during pregnancy.
(a)(i) Name the parts labelled A, B, C, D and E.
(ii) Give one function of the parts labelled B and C.
(b) (i) Name two substances that pass from the mother's blood to the blood of the foetus.
(ii) In what way(s) does a zygote differ from any other cell in the body?
8.(a) (i) What are the characteristics of viruses?
(ii) How do viruses differ from bacteria?
(b)Study the Figure below and then answer the questions that follow.
(i)What does Fig. 5 represent?
(ii)Name the parts labelled A, B, C, D and E.
(c)Arrange the following in the correct order for a simple reflex arc:
Impulse travels in motor fibre, impulse travels in sensory fibre, effector organ is stimulated, receptor organ is stimulated, and impulse crosses synapse.
9.(a) Differentiate between responsible behaviours and risky behaviours.
(b) State two behaviours which may lead to the following risks:
(c) Suggest how victims of HIV/AIDS can be cared and supported.
10. (a) (i) Define osmosis.
(ii) Does the presence of a cell wall prevent the process of Give reason(s) to support your answer.
(iii) How does osmosis differ from diffusion?
(b) (i) Distinguish between phototropism and geotropism.
(ii) Name the hormone responsible for tropic responses in plants. (iii) Name three diseases transmitted by polluted water.
11. Write an essay on population growth using the following guidelines:(a) Meaning of population.
(b) Factors influencing rapid human population growth and distribution. (c) Factors influencing population change.
12. Discuss the economic importance of bacteria. Give examples where necessary.
13. Discuss the skin as a sensory organ in mammals.
Get Schemes Of Work In Zero Waiting Time
Biology Made Simple Step 4 Ready On The Market!Get Your Copy Now
Chemistry Made Simple Step 1
Chemistry Made Simple Step 2
Chemistry Made Simple Step 3
Chemistry Made Simple Step 4