Loam is the best type of soil for crop production because

A. it has a high percentage of clay which prevents leaching

B. it has high humus content

C. it is porous and has good water retention capacity

D. gravels which obstruct implements are absent from it

The mineral needed for the formation of haemoglobin is

A. magnesium

B. iron

C. phosphorus

D. calcium

A-person who fails to detect the bitter taste of a substance swallowed, is more likely to have

A. dead taste buds on the tongue

B. avoided the substance from contacting the back of his/her tongue

C. fewer taste buds on the tongue

D. swallowed the substance without any water

Which of the following solutions is suitable for removing chlorophyll in a green leaf?

A. Million’s reagent

B. Methylated spirit

C. Benedict solution

D. Fehling’s solution

Which of the following is not promoted by high wind speed?

A. Rill erosion

B. Weathering of parent rock

C. Breeding of plant

D. Opening of stomata

Micro-organisms which break down dead organisms and absorb their contents are called

A. decomposers

B. consumers

C. parasites

D. commensals

The substances recycled in the soil by the activities of micro-organisms during the decay of dead organisms
are first utilized by the

A. carnivores

B. herbivores

C. scavengers

D. autotrophs

Which of the following associations can upset the balance of nature?

A. Epiphitism

B. Parasitism

C. Symbiosis

D. Saprophytism

Which of the following groups of factors do the Agama lizards compete for? I. Space II. Food III. Mates

A. Space and food only

B. Space and mates only

C. Food and mates only

D. Space, food and mates

Which of the following structures in a housefly aids in the transmission of diseases in man?

A. Hairs

B. Spiracles

C. Antennae

D. Wings