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2017 WAEC Biology Theory  (a) A child belongs to blood group 0 and the mother be-longs to group B....

Biology
WAEC 2017

 (a) A child belongs to blood group 0 and the mother be-longs to group B. With the aid of genetic cross, state the possible blood groups of the father.

 (b) (i) Name two forms of adaptive communication in animals

(ii) State two reasons why organisms communicate with one an-other.

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Explanation

A child belongs to blood group 0 and the mother be-longs to group B. With the aid of a genetic cross. State the possible blood groups of the father 
 (a) Genetic cross 
If the father is group A 

(b)i. Forms of adaptive communication

  • Sound/auditory/acoustic
  • visual; smell/chemical/ pheromones
  • tactile
  • electrical signal
  • display.

ii. Reasons why organisms communicate with one another 

  • for food
  • maiting/reproduction
  • territorial defence
  • danger/threats/predator
  • tracking routes. 

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709