UNICAL Biology 2010/2011 Past Questions

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

Which of the following specialized structures are stimulated by touch, pressure, pain, heat and cold?

A.receptors
B.synapse
C.cell bodies
D.myelin

The process by which plants and animals are modified in structure, physiology and behavior in order to survive is known as

A.evolution
B.adaptation
C.succession
D.hibernation

Thunderstorm can be beneficial to plants because it

A.kills pests that attack crops
B.adds lime to the soil
C.adds nitrates to the soil
D.make rain water available to plants

When large numbers of organisms share limited space and resources, the result is

A.immigration
B.symbiosis
C.extinction
D.competition

Even though some flowering plants contain accessory pigments which given them colors, they still do not contain the pigment

A.melanin
B.chlorophyll
C.carotene
D.cytoplasm

Which structure in the maize grain store food?

A.radical
B.embryo
C.cytoplasm
D.endosperm

Which of the following statements is not associated with the theory of natural selection?

A.there is struggle for existence
B.there is competition among the offspring
C.the weaker offspring are eliminated
D.food and other needs are abundant

Nitrogen fixing micro-organisms in leguminous plants live symbiotically in the

A.branch roots
B.tap roots
C.root nodules
D.root hairs

The epidermis of the mammalian skin is an example of a tissue because the cells

A.prevent light from passing through them
B.have a similar structure and function
C.prevent excessive loss of water
D.are imgrenable with keratin

The Phenomenon whereby some organisms with certain features get established in an environment is known as

A.partial selection
B.artificial selection
C.natural selection
D.mutation