Waec Biology Past Questions and Answers

Question 86:

• WAEC 1990

The structure labelled A represents the

A. Transverse process
B. Neural spine
C. Neural canal
D. Centrum
E. Metapophysis

Question 87:

• WAEC 1990

Which of the following statements is not correct about the functions of each group
of mammalian vertebrae?

A. Cervical vertebrae support the neck
B. Thoracic vertebrae articulate with the ribs
C. Lumbar vertebrae provide attachment for abdominal muscles
D. Sacral vertebrae support the skull and allow nodding and rotating movements
E. Caudal vertebrae support the tail and provide attachment for tail muscle

Question 88:

• WAEC 1990

The stems of young herbaceous plants are kept upright mainly by

A. Osmotic pressure
B. Turgor pressure
C. Transpiration pull
D. Suction pressure
E. Root pressure.

Question 89:

• WAEC 1990

Different tissues in plants contribute to the support of the parts as a result of the following characteristics
except

A. Malleability
B. Rigidity
C. Flexibility
D. Resilience
E. Hardness

Question 90:

• WAEC 1990

Water vapour is lost in plants during transpiration through

A. Stomata and lenticels
B. Xylem and stomata
C. Sclerenchyma and stomata
D. Parenchyma and lenticels
E. Guard cells and lenticels