2019 JAMB Biology Past Questions

Which of these animals is radially symmetrical?

Deamination occurs in the

In an agricultural ecosystem, the biotic component consists of

Unlike auxins, gibberellins

Which of the following relationships involves only one organism?

Double fertilization is a unique feature of

The bright colours of the comb and feathers in the peacock are for

The main function of the petal of a flower is to

The mammalian endocrine system is responsible for

The following organisms are hermaphrodites except

Spirogyra, Euglena and Chlamydomonas share many characteristics except

Which of the following phyla have members with both internal and external segmentation?

The first step in the process of photosynthesis is the

One of the accessory organs of the digestive system is the

Which of the following can bring about the greatest increase in the rate of transpiration?

Use the figure below to answer the question

Which of the structure is the molar?

Use the figure below to answer the question

What is the function of 3?

The nephridia in the earthworm forms part of the

Which of the following animals has homodont dentition?

The blood vessel which carries blood from the alimentary canal to the liver is the

The response shown by the tips of the root and shoot of a plant to the stimulus of gravity is

Which vitamin plays an important role in blood clotting?

The end product of glycolysis in plants and animals is

The gland directly affecting metabolic rate of growth and development is known as

The key event in the transition of the amphibians from water to land is the

The inner ear contains two main organs, namely the

Complex social behaviour and organization are found mostly in

The mutation theory of organic evolution was propounded by

Most monocots are easily recognized by their

When oil is poured into the breeding site of mosquito, it

Animals aestivate when the environment in which they live becomes

In dissection, the rib cage of a mammal has to be opened in order to expose the

Use the diagram below to answer the question

The structure labelled II articulates with III to form a

Use the diagram below to answer the question

Which of the bones is the radius?

Floating microscopic heterotrophs are mostly grouped as

The highest percentage of energy in an ecosystem occurs at the level of the

The population density of Tridax in an abandoned square farmland of size 200 m was found to be 5 plants per m². The population size of the plant on the farm is

The natural process that produces adaptive evolutionary changes is

The absence of anti-diuretic hormone in humans results in

Accurate identification of a suspect in a crime can be carried out by conducting