JAMB UTME - Biology - 1981

Nitrification means

Growing yam tendrils climb for support. This growth response is

Which of the structure becomes the seed coat after fertilization?

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

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

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

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

The tissue which connects a muscle to a bone is a

The functional unit of a mammalian kidney is the

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

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

Soil is said to be fertile if

The mushroom is an organism which feeds

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

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

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

Which of the following statements is NOT true of menstruation?

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

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

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

All the following are digestive enzymes except

The joint at Y in the figure above is

Spirogyra reproduces vegetatively by

Accommodation of the human eye is best described as the

Which of the following is the dental formula of man?

Where is the food stored in yam plant?

The deficiency of vitamin D leads to

The bone labelled X in the figure above is the

Which of the following animals is cold blooded

Milk protein is hydrolyzed by

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

A plant which has a horizontal underground stem is

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

The hepatic portal vein is unique because it

What is the function of the contractile vacuole in paramecium?

A surprising fact about sickle cell disease is that it

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

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

An instrument used in measuring the speed of wind is

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

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

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

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

Which of the following statement is NOT true of symbiosis?

The kind of teeth used for tearing food materials is the

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

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

What is name of the respiratory organ of the crab?

The thoracic vertebrae of a mammal is characterized by the