*2020 NABTEB SSCE BIOLOGY PRACTICAL ANSWERS*

*2020 NABTEB SSCE BIOLOGY PRACTICAL ANSWERS*

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NUMBER 1⃣2⃣3⃣4⃣ 

(1a) 

(i) Production of traditional foods such as yoghurt, cheese and vingar

(ii) Curing of tobacco 

(iii) Baking

(1b) 

(i) Cover crop find green manure

(ii) Mixed cropping and inter-Cropping 

(1c) 

(i) Ostrogen

(ii)  Progesterone 

(1d) 

(i) Stamen

(ii) Pistic 

(1e) 

(i) Oxidation and reduction of organic materials 

(ii) Erosion or crop removal

(1f) 

Aesturation

(1g) 

i=2/1, C=0/0 P3/2, M3/3=28

(1h) 

(i) Fruit and seed dispersal is very important for the survival of plants species

(ii) It allows plants to spread out from a wide area and avoid competing with one another

(1i) 

Adaptation 

(1j) 

Gregor Johann mendel

(1k) 

Xylem tissues and phloem tissues

(1l) 

(i) Genotype 

(ii) Phenotype 

(1m) 

It must have four floral parts (eg Sepal, Petals, at least one stamen and at least one pistil

(1n) 

(i) Flooding occurs when water cover the land that's normally dry

(ii) Flooding can also occur as a result of the ill-judge operation of water structure on regular rivers

(1o) 

(i) Epigeal

(ii) Hypogeal

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(2ai) 

Specimen A – Tilapia Fish

Specimen B – Tadpole 

(2aii) 

Frog

(2aiii) 

TABULATE 

Specimen A    |       Specimen B

UNDER SPECIMEN A

(i) Limbs absent 

(ii) Has many fins

UNDER SPECIMEN B

(i) Limbs present 

(ii) It has caudal fin

(2bi) 

(i) Eyes

(ii) Nostril 

(2bii) 

(i) Streamline body 

(ii) Muscular tail

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(3a) 

Specimen C – Maize grain affected by mould

Specimen D – Flower of pride of Barbados 

Specimen E – Egg of domestic Fowl

(3bi) 

(i) Motel Growth in maize storage 

(ii) Temperature 

(3bii) 

(i) It serves as a livestock feeding 

(ii) It serves as food for human consumption 

(3ci) 

(i) Stamen

(ii) Petals

(iii) Sepals

(iv) Pistils

(3cii) 

Insect

(3ciii) 

(i) It has bright colored petal which attract insects

(ii) It has large or stick pollen grain

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(4ai) 

Specimen F – Grain Weevil 

Specimen G – Soldier termite

(4aii) 

Insecta 

(4aiii) 

(i) They are tracheated Arthropoda 

(ii) They possesses three pairs of jointed legs

(4aiv) 

Both specimen F and Specimen G are insects 

(4bi) 

Termitarium 

(4bii) 

(i) The King

(ii) The Queen 

(iii) The wingled reproduction 

(iv) The worker 

(4biii) 

(i) The function of the king:- Is to mate or fertilize the queen 

(ii) Function of the Queen:- Is to lay eggs 

(iii) Function of wingled reproduction:- They can become new queens or kings in a new colony after a wedding fight 

(iv) Function of Worker:- To provide food for members of the colony

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Completed. 

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