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Biology Practical Waec GCE 2016 Free Expo Answers


Biology Practical Waec GCE 2016 Free Expo Answers
Free Biology Practical expo Waec GCE 2016 Free Expo Answers


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Monday, 5th September, 2016
Biology 3 (Alternative to Practical
2.00pm – 4.00pm
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(1a)
(i)Onion bulb
(ii)Bulb
(iii)It has a swollen stem
(iv)

I-Membraneous leaves
II-Outer scaly leaves
III-Thick fleshy storage leaves
IV-Auxillary buds
V-stem
VI-Roots
v)It is stored in the fleshy leaves
vi)
II-It protect the inner leaves
III-It stores food for the plant
VI-It absorbs nutrients from the soil

(1b)
(i)Epicarp
(ii)Mesocarp
(iii)Endocarp
(iv)Hollow containig water

i-protects the seed and makes fruit to float on water
ii-makes the fruit to be bouyant in water during dispersal
*Fleshy drupe
-It is fleshy
-It consists of epicarp,mesocarp and endocarp ie thin epicarp,fibrous mesocarp
*Palm nut,mango
*water,man
vii)
-It is used as food for man
-It is used as an ornament plant
It is used for making oil
-The fibrous mesocarp is used for cooking




(2a)
i)Arthropoda
ii)Insecta

(2b)
i)For phylum:
-Presence of jointed appendages
-Presence of chitinous exoskeleton
ii)For class
-Presence of three pairs of walking legs
-Presence of segemented body parts

(2c)
i)Organism D is male
ii)Presence of anal style

(2d)
i)D has anal style while G does not
ii)The terminal end of G's abdomen is modified into a boat like structure for carrying egg case
iii)D has larger antennae

(2e)
i)D has wings for flight and escape production
ii)F is smaller and could hide easily in crevices
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(4ai)
I-Foilage leaf
II-Epicetyl
III-Tap root
Iv-Routlets
V-Split testa
VI-Radicle
VII-Cotyledon

(4aii)
I-It is the primitive leaf which manufactures food for the seedling
II-It functions as the primitive stem for seedling
V-It protect the inner parts of the seedling before germination
IV-It absorbs nutrients from the soil
VII-It provides food for germination
VI-It grows to form the root of the seedling

(4bi)
Epigeal germination

(4bii)
Cowpea,groundnut,castor

(4biii)
-The seed requires warmth,water,viable seeds etc for germiation
-The seed absorbs moisture and become swollen
-The seed splits ,the radicle grows to form the root while the plumule form the shoot

(4ci)
It is carried above the soil level as a result of elongation of the epicotyl

(4cii)
Cotyledon

(4ciii)
Carbonhydrate

(4d)
-Viable seeds
-Warmth
-Moisture
-Enzymes

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