The part of the alimentary system of a bird where grinding of maize occurs is the

A. crop

B. stomach

C. gizzard

D. cloaca

E. rectum

Natality is a factor affecting population density because it involves

A. increase in population due to immigration

B. increase in population due to emigration

C. the number of mature females in the population

D. the number of females in the population

E. the number of all young ones produced in the population

The female part of a flower consist of the

A. stigma, style and ovary

B. petals, sepals and anthers

C. stigma, sepals and anthers

D. filaments, style and pollen grain

E. sepals, stigma and pollen grain

Puddles,ponds, rivers, lakes, seas and ocean are grouped together as

A. ecosystem

B. biosphere

C. terrestrial habitat

D. marine habitat

E. aquatic habitat

Which of the following would be the primary producer in a food chain?

A. Saprophytes

B. Herbivores

C. Carnivores

D. Green plants

E. Parasites

Fewer number of trees is characteristic of the Savanna zones of Nigeria because

A. there is too much sunlight

B. there is limited amount of rainfall

C. they are usually exposed to grazing animals

D. they are covered by high mountains

E. the farmers always engage in bush-burning

The number of individuals in a habitat in relation to the unit space available to each organism is referred to as the

A. birth rate

B. density

C. mortality

D. frequency

E. dispersion

Which of the following will be the effect of waterlogged top soil on the roots of plants?

A. the waterlogged soil will stimulate rapid growth of roots

B. there will be abundant supply of air for the growth of roots

C. The roots will absorb water i rapidly

D. There willl be an accumulation of plant nutrients

E. the roots will be starved of air

Which of the following is the unit of transmission of hereditary traits in living organisms

A. Nucleus

B. Nucleolus

C. Gametes

D. Genes

E. Chromosomes

The role of dead organic matter in the soil is to

A. make the soil black

B. increase the mineral salt content

C. provide food for all living organisms

D. increase the acidity of soil

E. make the soil more porous