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Waec biology practical answers 2021

Waec biology practical answers 2021

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Waec biology practical answers…

1ai

A- Neck region

B- chest region

C- upper abdominal region

*1aii*

A- it allows the head to nod on it (i.e it permits nodding of the head)it fits into the oceipital condylies of the skull

B- it aids the attachments of the ribs

C- Lumber vertibra provides attachment for the abdominal muscles

(4ai)

Phylum

L – Arthropoda

M – Arthropoda

(ii)

Class

L – Insecta

M – Insecta

(4biii)

– 6 legs

– 4 wings

– chitinous exoskeleton

– antenna

 

(4ai)

Phylum

L – Arthropoda

M – Arthropoda

(ii)

Class

L – Insecta

M – Insecta

(4biii)

– 6 legs

– 4 wings

– chitinous exoskeleton

– antenna

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