DEMO|PAPER 409-QNS

 

PRESIDENT’S OFFICE

REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

O-STUDY LIBRARY

FORM FOUR EXAMINATION

BIOLOGY 1

TIME 3:00HRS July 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.

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.

1. 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?

1. The insects have three body parts while arachnids have four body parts

2. The insects have one pair of antennae while arachnids have two pair of antennae

3. Insects have six pair of walking legs while arachnids have three pair of walking legs

4. Insects are carnivorous while arachnids are herbivorous

5. Insects carry out gaseous exchange through tracheoles system while arachnids carry out gaseous exchange through book lungs.

2. 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

2. Spontaneous generation theory

3. Organic evolution theory

4. The Steady state theory

5. Special creation theory

1. 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

   2. Aa x Aa

   3. AA x Aa

   4. Aa x aa

   5. aa x aa

4. 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

2. Oedema

3. Thrombrosis

4. Elephantiasis

5. Arteriosclerosis

4. Which of the following statement is correct about a seed?

1. Seed develops from ovary

2. Embryonic shoot develops to radical

3. Embryonic radial develops to stem

4. Ovule produces seed

5. Cotyledon forms seeds

4. 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 a) Adhesion force

2. Capillarity

3. Root pressure

4. Transpiration pull

5. Cohesion force

4. 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

2. The pupil become larger

3. The cilliary muscle relaxed

4. The lids closed

5. The eye opened wider

4. Which of the following is formed immediately after fertilization?

1. Placenta

2. An embryo

3. Foetus

4. Amniotic fluid

5. A zygote

4. A jelly-like mixture consisting mostly water, dissolved chemical substances and is a site for many chemical reactions in the cells. a) Cell vacuole

   2. Cell nucleus

   3. Chloroplast

   4. Cytoplasm

   5. Mitochondria

5. 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

2. Protein

3. Starch

4. Reducing sugar

5. Collagen

|READ MORE|