UNICAL Biology 2009/2010 Past Questions

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

Which of the following methods of reproduction is common in paramecium and amoeba?

A.conjugation
B.sexual reproduction
C.binary fission
D.budding

An example of cryptic coloration is the

A.mottled colours on moths that rest on lichens
B.bright colours of an insect pollinated flower
C.green colour of a plant
D.bright marks on a poisonous tropical frog on variegated leaves

Which of the following organs is responsible for controlling the body temperature regulations and water balance in mammals

A.kidney
B. hypothalamus
C. parathyroid
D.adrenal

A man and his wife are both heterozygous for the sickle cell trait. The likely percentage of their offspring that will either be carriers or sicklers is

A.75%
B.50%
C.25%
D.100%

The brain and the spinal cord make up the

A.peripheral nervous system
B.autonomic nervous system
C.central nervous system
D.somatic nervous

The hormone which regulates the amount of sugar in the blood is

A.thyroxine
B.auxin
C.insulin
D.adrenalin

Which of the following is the effect of using artificial pollination in plant breeding?

A.production of healthy crops
B.improvement of the variety crops
C.lengthening the maturity time
D.making crops susceptible to disease

Which of the following processes will not introduce carbon dioxide into the atmosphere?

A.breathing
B.photosynthesis
C.respiration
D.putrefaction

Which of the following does not contribute to the biomass of an ecosystem?

A.producers
B.food chain
C.consumers
D.micro-organisms

Which of these diseases cannot be prevented by immunization

A.onhcocerciasis
B.poliomyelitis
C.cholera
D.tuberculosis