Biology WAEC

An organism which maintains a constant temperature irrespective of environmental temperature fluctuation is?

A. an insect B. a mammal C. an amphibian D. a fish Correct Answer: Option B B. a mammal

4 years ago

Which of the following substances is not an excretory product in mammals?

A. Carbon dioxide B. Water C. Faeces D. Urea Correct Answer: Option C C. Faeces Explanation Faeces is discharged through…

4 years ago

The ventricles of the mammalian heart have thicker muscular walls than the auricles because the?

A. ventricles are larger B. ventricles receive more blood C. ventricles pump blood to longer distances D. auricles have smaller…

4 years ago

Which of the following organs in mammals is not excretory in function?

A. Liver B. Kidney C. Pancreas D. Lungs Correct Answer: Option C C. Pancreas

4 years ago

Gaseous exchange occurs through the following structures in some organisms except?

A. spiracle and tracheae B. alveoli and lungs C. stomata and lenticels D. chloroplast and plastids Correct Answer: Option D…

4 years ago

Which of these factors does not contribute towards the ascent of water in plants?

A. Root pressure B. Capillarity C. Transpiration pull D. Turgor pressure Correct Answer: Option D D. Turgor pressure

4 years ago

Which of the following heart structures is best adapted to cope with double circulation?

A. One auricle and one ventricle B. Two auricles and one ventricle C. Two auricles and partially divided ventricle D.…

4 years ago

Support in young herbaceous plants is provided by?

A. translocation B. guttation C. turgidity D. osmosis Correct Answer: Option C C. turgidity

4 years ago

The aspects of growth in living organisms include all the following processes except?

A. increase in dry weight B. reversible increase in size C. irreversible increase in length D. increase in number of…

4 years ago

Which of the following processes does not contribute towards growth?

A. Cell division B. Cell enlargement C. Cell differentiation D. Cell plasmolysis Correct Answer: Option D D. Cell plasmolysis

4 years ago