Post Utme Biology Past Questions and Answers

Question 281:

Trees in savannah habitats usually have heavy thick bark which mainly ____________

A. Reduces the rate of transpiration
B. Protect them from the scorching sun
C. Protect them from heavy winds
D. Resist bush fires

Question 282:

The epidermis of the mammalian skin is an example of a tissue because the cells ____________

A. Prevent light from passing through them
B. Have similar structure and function
C. Prevent excessive loss of wate
D. Are impregnated with keratin

Question 283:

During the process of osmosis,a semi-permeable membrane allows.

A. Only solute molecules to pass through it
B. Both solute and solvent molecules to pass through it
C. Only solvent molecules to pass through it
D. Only gaseous molecules to pass through it

Question 284:

Support in young herbaceous plants is provided by ____________

A. Translocation
B. Guttation
C. Turgidity
D. Osmosis

Question 285:

The ventricles of the mammalian heart have thicker muscular walls than the annicles because the ____________

A. Ventricles are large
B. Ventricles pump blood to longer distances
C. Ventricles receive more blood
D. Auricles have smaller capacity