JAMB UTME - Biology - 1981

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

An instrument used in measuring the speed of wind is

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

Which of the following animals is cold blooded

The hepatic portal vein is unique because it

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

Growing yam tendrils climb for support. This growth response is

The joint at Y in the figure above is

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

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

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

The tissue which connects a muscle to a bone is a

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

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

The functional unit of a mammalian kidney is the

What is the function of the contractile vacuole in paramecium?

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

The deficiency of vitamin D leads to

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

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

Where is the food stored in yam plant?

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

Which of the following is the dental formula of man?

The mushroom is an organism which feeds

Milk protein is hydrolyzed by

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

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

What is name of the respiratory organ of the crab?

Which of the following statement is NOT true of symbiosis?

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

The thoracic vertebrae of a mammal is characterized by the

Spirogyra reproduces vegetatively by

Nitrification means

A plant which has a horizontal underground stem is

The kind of teeth used for tearing food materials is the

Accommodation of the human eye is best described as the

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

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

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

Which of the structure becomes the seed coat after fertilization?

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

All the following are digestive enzymes except

Soil is said to be fertile if

Which of the following statements is NOT true of menstruation?

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

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

The bone labelled X in the figure above is the

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

A surprising fact about sickle cell disease is that it