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2022 WAEC Biology Theory (a) What are conversation laws? (i) State three conservation laws (b) State two reasons why...

Biology
WAEC 2022

(a) What are conversation laws?

(i) State three conservation laws

(b) State two reasons why animals are poached.

(i) Name five animals that are commonly poached.

(c) State four effects of excessive use of the forest.

(d) Explain briefly the following terms: i.blood transfusion ii.antigen

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Explanation

(a) Conservation laws
Are set down rules/legislations with sanctions/ punishments for offenders/perpetrators; which regulate/protect the usage of natural resources/endangered species .

[ii] i. No unauthorised exploration of mineral/coal /gold/ petroleum/bauxite by individuals without
permit

ii. No killing of endangered species

ii. No use of poisonous chemicals/Gammalin 20 for fishing

iv. Observing closed season for hunting/fishing

V. No trading of body parts of endangered species

(b)i) a. For their unique body parts/tusks/skin/fin b. For sport/game

C. For money/trade/business

d. For food

e For trado-medicinal purposes.

i) a. Elephant b. Snake c. whale  d. Crocodile e. Lion  f. Zebra g. Deer

h. tiger i.rhinoceros  j.Shark   k.ape/gorilla  l. birds m. Pangolin/porcupine  n. leopard  o. hippopotamus

(c) i. There will be shortage of trees

ii. This will lead to shortage of timber over time for use in the furniture industry.

ii.The natural habitat of organisms will be destroyed

iv. Foreign exchange from timber export will reduce

v. Some useful herbs/medicinal plants will be destroyed

vi. Research sites will be destroyed

vii. There will be succession 

viii.soils will be exposed to flooding/erosion

ix. carbon [iv] oxide emission leading to global warming 

x. Desert encroachement/desertification

d i Blood transfusion

  Is the process of administering blood from a healthy person/donor to an individual/patient recipient that requires/needs it.

  ii Antigen 

   A substance/protein; found on the surface the red blood cells; that could stimulate/trigger the production of antibodies in the body/blood plasma.
 


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