UNN Biology 2017/2018 DAY 1 Past Questions

Question 1

One example of fossil fuels is

A.coral
B.limestone
C.firewood
D.coal

Objective

Question 2

A flower that has both stamen and pistil is said to be

A.staminate
B.pistillate
C.perfect
D.imperfect

Objective

Question 3

The speed of the wind can be measured with an instrument called

A.hydrometer
B.seechi disc
C.anemometer
D.wind vane

Objective

Question 4

In Nigeria, the Guinea Savanna belt borders the

A.mangrove swamps and the sahel savanna
B.rainforests and the Sudan savanna
C.deserts and the Sudan savanna
D.rainforests and the desert

Objective

Question 5

The soil with the highest water-retaining capacity is

A.clayey soil
B.stoney soil
C.sandy soil
D.loamy soil

Objective

Question 6

A food web is more stable than a food chain because

A.it contains more organisms
B.it is not easy to destroy
C.it has greater energy source
D.every organism has an alternative food source

Objective

Question 7

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

A.Increased humidity
B.Reduced evaporation
C.Reduced wind speed
D.Reduced humidity

Objective

Question 8

Trace elements are required by plants mainly for the

A.formation of pigments and enzymes
B.production of energy and hormones
C.manufacture of carbohydrates
D.manufacture of proteins

Objective

Question 9

A characteristic feature of tropic rainforest is that it

A.contains trees with narrow leaves
B.contains large number of plant species
C.contains fewer number of plant species
D.has total annual rainfall of less than 50cm

Objective

Question 10

The chemical name given to vitamin B is

A.thiamine
B.riboflavin
C.niacin
D.pyridoxine

Objective

Question 11

The site for protein synthesis in a cell is

A.golgi apparatus
B.ribosome
C.lysosomes
D.nucleus

Objective

Question 12

The pollutant that is biodegradable is

A.heavy metals
B.cellophane
C.sewage
D.crude oil

Objective

Question 13

Which of these membranes separate the cell wall from the cytoplasm?

A.Tonoplast
B.Cellulose cell wall
C.Middle lamella
D.Plasmalemma

Objective

Question 14

Which of the following is not true about anabolism?

A.It is a building process
B.It is an endothermic reaction
C.It is an exothermic reaction
D.It leads to the production of larger molecules

Objective

Question 15

The influence of soil on organism in a habitat is referred to as

A.edaphic
B.physiographic
C.biotic
D.topographic

Objective