UNIPORT Biology 2015/2016 Model 1 Past Questions

Practice each question, then open it to see the full details.

The causative agent of bird flu is

A.protozoan
B.virus
C.bacterium
D.fungus

Which of the following is common to the mosquito housefly and blackfly?

A.They undergo complete' metamorphosis
B.They are parasites of man
C.Their immature stages are aquatic
D.Their adults have two pairs of wings

Which of the following is an exam of parasitism

A.Fungi growing on a dead tree branch
B.A squirrel living in an abandoned nest of a bird
C.Mistletoe growing on an orange tree.
D.cattle egrets taking tasks from the body of cattle

A crucible of 5 gm weighed 10gm after filling with fresh soil. It is then heated in an oven at 100°C for 1 hour. After cooling in a desiccator, the weight was 8gm. The percentage of water in the soil is

A.80%
B.60%
C.20%
D.40%

The mangrove swamp in Nigeria is restricted to the

A.Sahel savanna
B.Sudan savanna
C.Guinea savanna
D.Tropical rainforest

One adaptation shown by hydrophytes in fresh water habitats is the

A.leaves reduced to spines
B.poor development of roots and xylem tissues
C. waxy cuticle on shoot surface
D.well-developed roots and supporting system.

A biotic factor which affects the distribution and abundance of organisms in a terrestrial habitat is

A.temperature
B.competition
C.PH
D.light

Which of the following cell types has the least number of mitochondria?

A.Cardiac cells of the heart
B.cells of the cornified layer
C.muscle cells of the bladder
D.muscle cells of the diaphragm

Insectivorous plants trap and kill their prey to derive

A.phosphorous
B.calcium
C.nitrogen
D.zinc

Exhaled air differs from inhaled air in that it

A.contains less amount of carbon (IV) oxide
B.It is usually lower in temperature
C.often has more oxygen
D.usually has more water vapour