2012/ 2013 WAEC BIOLOGY Questions and Answers-2012 WAEC BIOLOGY SPECIMENS
Date for Biology examination:Biology (obj&theory) 2:30-5:00
Thursday 12th april
Biology1 (practical) 9-11
Biology1 (practical) 11:30-1:30
you can see the complete list of waec timetable here Timetable for Waec 2012/2013 session.
2012 WAEC BIOLOGY SPECIMENS- Questions and Answers
Specimen A———- Garden egg fruit
Specimen B———- Tridax fruit
Specimen C———- GrainWeevil
Specimen D———– Tick
Specimen E———— Rat {wet preserved}
Specimen F————-Atlas vertebra of a
small mammal
Specimen G————Axis vertebra of a
small mammal specimen
Specimen H———– Cervical vertebra of
a Small mammal
Specimen J————–Tilapia fish [web preserved]
Specimen K————- Toad
Specimen L————— Lizard
NOTE: Specimen F,G & H are peculiar to Candidate in Ghana, Sierra-leone & the Gambia Only.
BIOLOGY PRACTICAL QUESTION
question 1. Classify Specimen A and B
question 2. State the agent of dispersal for Specimen A and B
question 3. Draw a label diagram of Specimen B.
question 4. Cut Specimen A into two longitudinal Section and label.
question 5. State two economic usefulness of Specimen E,D,C
question 6. State two way by which specimen C,D,E can be preserved
question 7. Name the habitat of Specimen J,K,L.
question 8. State two adaptive features of
Specimen J and L to live in their
respective habitat.
question 9. Mention two adaptive Features of Specimen K to live on land and in water.
BIOLOGY PRATICAL ANSWER 2012
ANS: Specimen A: garden egg: Features:
i) epicarp is soft and flesh
ii) many seeds are present
iii) epicarp is edible
iv) it is dispersed by ant.
ECONOMIC USEFULNESS:
i) used in Control of blindness
ii) good for ulcer patiets
iii) helps to Control obesity. The type of placentation is axile. The botanical name is [solanum
melonge]
Specimen B: Tridax fruits: the botanical name is procumbenis and the family name is calyx. It is a true fruit. It develop from a Superior ovary and have one seed.
The mode of dispersion is by wind because it is small and light.
i) they act as Vector of diseases
ii) they cause great annoyance and irritation to host
iii) bites may become a source of secondary infection.
Control measures:
i) by picking
ii) by using insecticides
iii) burning the grass where a the graze. Different between weevil and tick: weevil Tick.
1) Antenna present-antenna
absent
2) rostrum present-rostrum absent
3) bristle absent present.
Similarities btw weevil and tick.
1) both have head-thorax and abdomen. Both have jointed legs.
Specimen J: tilapia fish-bony fish. Phylum-chlordata. Sub-phylum-vertebra. Class-pisces. Habitat-aquatic.
Adaptation of fish to its
environments.
Streamilimed body: this allows for easy movement in water.
Gills: offer an efficient means of
respiration in water.
Scales: they protect againt injury, control movement of salt in and out of fish body
Specimen K:- toad. Phylum-
chordata. Class-amphibia. Habitat- live both on land and aquatic habitat. External features the body is divided into head and thrunk.
Adaptation of the toad of life. On land: presence of hind limb for hopping. On water web on the hind limb for swimming over
streamlined shaped for easy movement Absence of neck to reduce friction during swimming.
Specimen L- agama Lizard, phylum-chorama-class-reptill. Habitat-terrestial. Adaptation of lizard to terrestial habitat: limbs are develop for movement on land.
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