Biology

In man, sex is determined by the inheritance of?

A. a pair of homologous chromosomes B. an extra chromosome in the cells of a female C. a dominant gene…

6 years ago

The ability of some individuals to taste phenylthiocarbamide (PTC) is a?

A. morphological adaptation B. morphological variation C. physiological adaptation D. physiological variation Correct Answer: Option D D. physiological variation

6 years ago

Which of these physiological variations is sex-linked?

A. albinism B. blood groups C. sickle-cell anaemia D. haemophilic condition Correct Answer: Option D D. haemophilic condition

6 years ago

Tropical rain forests can be conserved by the following practices except?

A. agroforestry B. deforestation C. shifting cultivation D. crop rotation Correct Answer: Option B B. deforestation

6 years ago

Which of the following practices does not contribute to intensive depletion of forest resources in West Africa?

A. Use of powerful tools for felling trees B. regrowing of forest trees C. clearance of forests for cash crops…

6 years ago

The following are natural resources except?

A. rubber B. soil C. water D. cellophane Correct Answer: Option D D. cellophane

6 years ago

An abandoned refuse dump can be a good site for an intending vegetable farmer because?

A. very little manual work would be done by the farmer B. microbial activity had released nutrients into the soil…

6 years ago

The drugs which inhibit the growth of disease-causing organisms and thus used in the treatment of infections are referred to as?

A. antibodies B. antibiotics C. antitoxic D. septics Correct Answer: Option B B. antibiotics

6 years ago

If a piece of abandoned farmland went through a series of floral and faunal changes and became established with permanent plant and animal population, it could be said to have undergone?

A. transformation B. succession C. competition D. evolution Correct Answer: Option B B. succession

6 years ago

Which of the following methods is best for the determination of population density of Tridax in an open held?

A. transect B. quadrat C. Sweep-net D. pit-fall Correct Answer: Option B B. quadrat

6 years ago
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