The type of joint between adjacent bones in the part labelled II is the
- A. hinge joint
- B. ball and socket joint
- C. suture joint
- D. sliding joint
The bones labelled II are called
- A. lumbar vertebrae
- B. thoracic vertebrae
- C. cervical vertebrae
- D. sacral vertebrae
The part labelled II is the
- A. stigma
- B. anther
- C. filament
- D. style
The process of pollination involves the transfer of pollens from
- A. II to III
- B. IV to I
- C. I to II
- D. III to IV
An evidence of the relationship between living organisms and their extinct relatives can best be obtained from
- A. embryology
- B. comparative anatomy
- C. comparative physiology
- D. palaeontology
The spots and stripes of the leopard and tiger are example of
- A. cryptic colouration
- B. warning colouration
- C. disruptive colouration
- D. counter shading
Rodents gnaw on food with their
- A. molar teeth
- B. strong jaws
- C. flat-ridged teeth
- D. chisel - like front teeth
Plants survive hot dry conditions by
- A. storing water in large parenchyma cells
- B. producing numerous leaves
- C. having numerous stomata
- D. having evergreen leaves
Which of the following is an example of intraspecific competition?
- A. a lizard and an ant-eater chasing an insect
- B. a worker termite and a soldier in a limited space.
- C. a hawk and an eagle targeting the same chicken
- D. yam and potato shots growing out through the same window
Sex – linked genes are located on
- A. Y - chromosomes
- B. X - and Y - chromosomes
- C. homologous chromosome
- D. X - chromosome
Identical twins inherit their genes from
- A. different eggs and sperms
- B. the same egg and sperm
- C. two eggs and a sperm
- D. one egg and two sperms
In a Mendelian cross of red and white varieties of the four O”clock plants, the F1 generation expresses incomplete dominance by having flower which are
- A. white
- B. red
- C. pink
- D. multicoloured
Paternity dispute can most accurately be resolved through the use of
- A. Finger printing
- B. blood group typing
- C. DNA analysis
- D. tongue-rolling
A farm practice that result in the loss of soil fertility is
- A. mixed farming
- B. bush fallowing
- C. shifting cultivation
- D. continous cropping
The soil type that will be most difficult to plough in a wet season is one that is
- A. loamy
- B. clayey
- C. sandy
- D. silty
The scarcity of food causes a sudden decrease in population size by
- A. decreasing the reproductive rate
- B. bringing about immigration
- C. raising the mortalility rate
- D. minimizing the rate of competition
A state in Nigeria that is most susceptible to desert encroachment is
- A. Kwara
- B. Taraba
- C. Kaduna
- D. Katsina
One of the adaptation of reptile to water loss is the presences of
- A. keratinous scale
- B. claws on limbs
- C. long tails
- D. long sticky tongues
The progressive loss of energy at each level in a food chain leads to
- A. an increase in biomas at each successive level
- B. a decrease in biomass at each successive level
- C. an increase in the number of organism at each successive level
- D. an increase in the total number of organisms at each successive level
The association between termites and the cellulose – digesting protozoans in their guts is an example of
- A. saprophytism
- B. mutualism
- C. parasitism
- D. commensalism
| Ecological Zone | Temperature (oC) | Rainfall (mm) |
| I | 45 | 300 |
| II | 32 | 2000 |
| III | 30 | 2200 |
| IV | 15 | 800 |
From the table above which of the zones is likely to be desert?
- A. I
- B. II
- C. III
- D. IV