JAMB UTME - Biology - 1981

Nitrification means

Which of the following is NOT a function of the liver?

The correct figured sequence for the following labeled parts (stigma, ovary wall, embryo sac, integument and micropyle) is

All the following are digestive enzymes except

If Benedict's solution gives a positive result in a food test, the food contains

Soil is said to be fertile if

Spirogyra reproduces vegetatively by

An instrument used in measuring the speed of wind is

A surprising fact about sickle cell disease is that it

What would happen if solution Y is more concentrated than solution X in the figure above?

Normally any character shown by an organism is due to the effects of

A person whose blood can be donated to all other people, must have the blood group

The mushroom is an organism which feeds

Growing yam tendrils climb for support. This growth response is

The bone labelled X in the figure above is the

which of the labelled tissues in the figure above is responsible for transport of mineral salts and water in living plants?

Where is the food stored in yam plant?

Which of the following insects has an incomplete metamorphosis during its life circle?

The functional unit of a mammalian kidney is the

The deficiency of vitamin D leads to

The correct route for a piece of bread eaten by a mammal is

Which of the following statements is NOT true of menstruation?

In which of the following plants is swollen shoot disease common?

The kind of teeth used for tearing food materials is the

The joint at Y in the figure above is

Which of the following statement is NOT true of symbiosis?

Choose the sequence which represents the correct order of organisms in a food chain.

Milk protein is hydrolyzed by

The rate of transpiration of a leafy shoot would be highest under

One common feature of the fungi, algae, mosses and ferns is that they

Which of these substance is likely to be deficient in the diet of a person having goitre?

What is name of the respiratory organ of the crab?

A plant which has a horizontal underground stem is

Which of the following is NOT true of wind-pollinated flowers?

The two types of human tapeworm can be distinguished by the presence or absence of

Accommodation of the human eye is best described as the

Which of the following instruments is used to demonstrate the response of roots and shoots to gravity?

If the anthers of a flower mature before the stigma, the condition is termed

The thoracic vertebrae of a mammal is characterized by the

Which of the following is the dental formula of man?

The hepatic portal vein is unique because it

What is the function of the contractile vacuole in paramecium?

Which of the following animals is cold blooded

In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces

The tissue which connects a muscle to a bone is a

What is the genetic ratio of a cross between homozygous tall plant and a homozygous dwarf plant?

A fruit formed from a single flower having several free carpels is

What is the part marked X in the figure above called?

Which of the structure becomes the seed coat after fertilization?