Biology JAMB, WAEC, NECO AND NABTEB Official Past Questions

The easiest way to establish the level of pollution in a local stream is to measure the level of

A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is likely to have contacted

In an experiment to determine the percentage of air in a soil sample, the following readings were recorded:

volume of water in measuring cylinder = 500 cm3

volume of soil added to water = 350 cm3

volume of water and soil after stirring = 800 cm3

the percentage of air in the soil sample is

An ecological factor that will have the most limiting effects on the abundance of phytoplankton in a turbid pond is

Stomata of some plants are sunken and protected by hairs. These are features of

The main ecological problem facing intertidal organisms is

In a typical freshwater habitat, the edge of the stream or pond constitutes the

Which of the following associations is an example of mutualism

The major consequences of bush burning in an ecosystem is

The transmission of impulses along a nerve fibre is characterized by

During ovulation, an egg is released from the

A plant parenchyma cell also acts as a supporting tissue when it

In the mammalian kidney, the Bowman”s capsules is located in the

Exhaled air differs from inhaled air in that it

What will happen when two equal-sized pieces of unripe pawpaw labeled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively?

In the alimentary system of a bird, the function of teeth is carried out by the

insectivorous plants traps and kill their prey to derive

The order of passage of food in the digestive system is?

In a dicotyledonous stem, the zone between the epidermis and the pericycle is the

The most important characteristic that makes reptiles to conquer terrestrial habitats is the possession of

The beak of a duck is structurally adapted for