Which of the following food substances turns bright red when warmed with suddan III solution?

A. Starch

B. Reducing sugar

C. Protein

D. Fat

Mammals require a relatively high amount of carbohydrates because

A. they maintain the weight of the body

B. they are required for growth

C. they initiate enzyme production

D. they yield energy for activities.

All the available places on earth which support life constitute the

A. lithosphere

B. atmosphere

C. biosphere

D. hydrosphere

The abiotic factor which determines the depth to which light penetrates in a pond is

A. current

B. turbidity

C. wind

D. salinity

Which of the following organisms is a producer?

A. Spirogyra

B. Mucor

C. Rhizopus

D. Yeast

Which of the following groups consists of heterotrophs?

A. Mucor, chlamydomonas and Euglena

B. Spirogyra, Mucor and Mushroom

C. Man, Mucor and Mushroom

D. Man, Maize and Cowpea

Which of the following organisms will not bring about decomposition?

A. Earthworm

B. Bactenum

C. Mould

D. Spirogyra

Which of the following is not released during decay of living matter?

A. Ammonia

B. Oxygen

C. Carbon dioxide

D. Heat energy

In commensalism

A. one of the organisms gains and the other loses

B. both organisms benefit from the association

C. one of the organisms gains while the other neither gains nor loses

D. one of the organisms produces extra cellular Digestive juices.

Parasitism can best be defined as an association between two organisms in which

A. both organisms benefit

B. one organism gains and the other neither gains nor loses

C. both organisms suffer some disadvantages

D. one organism gains and the other loses