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  9. Q22
Question 22

Protection of the body cells of mammals against ultra-violet rays of the sun is brought about by

  • A.keratin
  • B.melanin
  • C.sebum
  • D.scales
Objective

Question details

Exam body
WAEC
Subject
Biology
Year
2007
Question no.
#22
Type
Objective
Previous · Q21A neurone that transmits impulses directly from sensory cells is called Next · Q23 In which of the following organisms is parental care manifested?

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