JAMB UTME - Biology - 1981

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

All the following are digestive enzymes except

Which of the structure becomes the seed coat after fertilization?

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

Which of the following statements is NOT true of menstruation?

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

Soil is said to be fertile if

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

The bone labelled X in the figure above is the

Milk protein is hydrolyzed by

The joint at Y in the figure above is

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

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

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

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

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

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

Spirogyra reproduces vegetatively by

Nitrification means

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

Which of the following statement is NOT true of symbiosis?

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

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?

Growing yam tendrils climb for support. This growth response is

An instrument used in measuring the speed of wind is

The thoracic vertebrae of a mammal is characterized by the

Which of the following is the dental formula of man?

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

The deficiency of vitamin D leads to

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

What is name of the respiratory organ of the crab?

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

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

A surprising fact about sickle cell disease is that it

Which of the following animals is cold blooded

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

The tissue which connects a muscle to a bone is a

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

The kind of teeth used for tearing food materials is the

What is the function of the contractile vacuole in paramecium?

Where is the food stored in yam plant?

Accommodation of the human eye is best described as the

The hepatic portal vein is unique because it

The mushroom is an organism which feeds

A plant which has a horizontal underground stem is

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

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