THE UNITED REPUBLIC OF TANZANIA
PRESIDENT’S OFFICE, REGIONAL ADMINISTRATION AND LOCAL
GOVERNMENT
FORM FOUR JOINT EXAMINATIONS PRIVATE AND GOVERMENTS
SCHOOLS (JEPGOS): PRE MOCK APRIL2024
033/1 BIOLOGY 1
(For Both School and Private Candidates)
Time 03:00H YEAR 2024
INSTRUCTIONS
1. This paper consist of section A, B and C
2. Answer all questions from section A, B and only two (2) questions from
section C
3. All answers must be written in the space provided
4. All writing must be in blue or black ink.
5. Write your number at the top right hand corner of every page.
JEPGOS 2024 SERIES BIOLOGY
JEPGOS 2 024
1
SECTION A (16 Marks)
Answer all questions in this section
1. For each of the following items (i) – (x), choose the correct answer from among the given
alternatives and write its letter besides the item number sheet provided.
i) Most of students have failed to make a clear distinction between members of class
arachnida from these of class insect when they were classifying different living
organisms in biology laboratory. As the expert of biology what is the characteristics
which distinguish these two groups of phylum Arthropoda?
a) The insects have three body parts while arachnids have four body parts
b) The insects have one pair of antennae while arachnids have two pair of antennae
c) Insects have six pair of walking legs while arachnids have three pair of walking
legs
d) Insects are carnivorous while arachnids are herbivorous
e) Insects carry out gaseous exchange through tracheoles system while arachnids
carry out gaseous exchange through book lungs.
ii) During the biology class session, a biology teacher explained to his students about
existed of origin of life which state that “the universe has always existed and has no
origin, that is, it did not have a moment of creation thus life has no origin “which of
the following is the correct name of this theory.
a) Cosmozoan theory
b) Spontaneous generation theory
c) Organic evolution theory
d) The Steady state theory
e) Special creation theory
iii) Mr. and Mrs. Sonenga, happened to have four children in their marriage. One of
them is an albino. What is the possible genotype of Mr. and Mrs. Sonenga?
a) AA x aa
b) Aa x Aa
c) AA x Aa
d) Aa x aa
e) aa x aa
iv) Dr. Emelda received medical results from laboratory technician and identified that a
victims is affected by filarial worms. Which of the following disease is typical caused
by the above worms?
a) Lymphoma
b) Oedema
c) Thrombrosis
d) Elephantiasis
e) Arteriosclerosis
v) Which of the following statement is correct about a seed?
a) Seed develops from ovary
b) Embryonic shoot develops to radical
c) Embryonic radial develops to stem
d) Ovule produces seed
e) Cotyledon forms seeds
vi) Water from the roots of the following plants is transported up the plant by different
forces. Which of the followings initiate and rise water to the least heights
2
a) Adhesion force
b) Capillarity
c) Root pressure
d) Transpiration pull
e) Cohesion force
vii) When students were conducting private study at night, lights went off suddenly.
Which of the following changes occurred in the eye of the students
a) The lens become thicker
b) The pupil become larger
c) The cilliary muscle relaxed
d) The lids closed
e) The eye opened wider
viii) Which of the following is formed immediately after fertilization?
a) Placenta
b) An embryo
c) Foetus
d) Amniotic fluid
e) A zygote
ix) A jelly-like mixture consisting mostly water, dissolved chemical substances and is a
site for many chemical reactions in the cells.
a) Cell vacuole
b) Cell nucleus
c) Chloroplast
d) Cytoplasm
e) Mitochondria
x) A research biochemist has just synthesized a novel compound that will react with a
peptide bond. What type of molecule will this compound react with?
a) Fats and oil
b) Protein
c) Starch
d) Reducing sugar
e) Collagen
2. Match the description in list A with corresponding terminologies in list B by writing the
letter of the correct answer besides the items number in the answer booklet provided.
LIST A LIST B
i) External appearance of a given characteristics as results A. Mutation
influenced by a gene B. Sex linked
ii) Genetic disorder characterized by failure of blood clotting C. Genotype
iii) A sudden genetic change which can be inherited D. Dominant
iv) Genetic makeup of a given gene which determine a given E. Variation
characteristic F. Albinism
v) Characteristics that can pass on from parent to offspring through G. Phenotype
sexual reproduction H. Test cross
vi) A gene that influence characteristics over another gene when in I. Loci
heterozygous state J. Hemophilia
3
SECTION B (54 Marks)
Answer all questions from this section
3. (a) What would hypothetically likely to happen to an eco-system, in case the following
organisms are completely eliminated?
i) Green plant
ii) Bacteria
(b) You have been given the following organism found at Mikumi game reserve. Study
them and answer the questions below (grass, shrubs, antelope, zebra and hyena)
i) Construct a food web
ii) Write down two (02) food chain from the food web drawn above.
4. In Dar es salaam Tanzania, it is common to see people throwing away used drink-bottles and
other wastes into water drainage gutters (rain water channels) along side roads. In six points,
explain the negative effects of this particular common practice.
5. (a) Distinguish between translocation and transpiration
(b) The mammalian heart is enclosed by a double layer of the membrane called pericardium.
Explain the following;-
(i) What makes this membrane prevent the heart from over-expanding when it is beating very
fast.
(ii) Why the inner part of the heart is lined with blood vessels? Explain by giving three points
6. If a pancreas as endocrine gland was by mistake removed during surgery from a patient,
describe six (06) problems which the patient would get.
7. (a) Various human activities trend to produce carbon dioxide in the atmosphere, but the
amount of carbon dioxide in air tends to remain less or more constant. Explain how is this
possible?
(b) Why breast feeding is more important than bottle feeding
8. In six (06) points differentiate animal growth and plant growth.
SECTION C (30 Marks)
Answer any two questions in this section
9. Human stomach plays important roles in the food digestion process along the alimentary
canal. Explain four ways the stomach is adapted to performing its function.
10. It may not be obvious to everyone the amazing way our bodies are structured and working to
keep us healthy and free from diseases. Briefly explain this to people by informing them
three ways the components of the natural barriers and three ways the immune system
successfully keep us free from diseases.
11. Form four biology students went Temeke hospital to collect data for their project titled “why
increasing in number of drugs addicted people to our society”? As a medical doctor of
Temeke Hospital how would you respond to these students with six points?
