Neco biology practical expo 2020

Neco biology practical expo 2020

(1ai)
Specimen; A is yam tuber
Specimen; B is cassava tuber
Specimen; C is quadrant
Specimen; D is insect net
Specimen; E is rain guage
Specimen; F is rice grain
Specimen; G is dry groundnuts seed
(1aii)
Specimen; A is propagated from small
tubers
Specimen; B is propagated by stem
Specimen; F is propagated by seeds
(1aiii)
Specimen; C is used for for study of the
distribution of an item over a large
area.
Specimen; D is used for prevention
against insects
Specimen; E is used to measure the
precipitating rain
(1aiv)
Diagram of insect net.
(1bi)
(i)The surface of B turn blue-black
(ii)starch is present
(1bii)
Specimen; F grains (cereals)
Specimen; G puises (legume)
(1biii)
(i)The paper appears translucent
(ii) Specimen; G contain fat and oil or
fat and oil is present in specimen G
(1biv)
Fat and oil
(2ai)
Specimen; H is contour feather
Specimen; I is quill feather
Specimen; J is Filoplume
Specimen; K is millipede
Specimen; L is centipede
(2aii)
(i)They provide insulation to birds
(ii)Feathers allow for flight
(iii)Feathers are used for defense
(iv)Feathers are used for camouflage
(2aiii)
(i)Wings
(ii)Tail

(2bii) (i)Specimen; H serve as aerodynamic devices for flight (ii)Specimen; J are used principally as insulation, to conserve body heat.

(2biii) Specimen; K belong to the class Diplopoda Specimen; L belong to the class Chilopoda. (2biv) In tabular form -Specimen; K- (i)millipedes are more rounded. (ii)Millipedes have two sets of legs per segment positioned directly under their body. -Specimen; L- (i)centipedes have a flatter body (ii)Centipedes have one set of legs per segment positioned on the side of their body.

(3ai) Specimen; M is Grasshopper Specimen; N is spider Specimen; O is Larva (house fly) Specimen; P is Larva ( mosquito) Specimen; Q Flame of The forest flower Specimen; R hibicuss flower.