NECO 2020 - PRACTICAL BIOLOGY ANSWER
A - Yam Tuber
B - Cassava Tuber
C - Quadrat
D - Insect net
E - Rain gauge
F - Rice grain
G - Dry groundnut seeds
A is propagated by small tubers
B is propagated by stem
F is propagated by seed
C - It is used to determine the population of small organisms, small plants or crawling insects.
D - It is used to catch flying insects
E - It is used to measure amount of rainfall or precipitation.
8-10cm well labeled Diagram of Insect net
(1) The surface of B turns blue black
(2) Starch is present
F - Grains (cereals)
G - pulses (legumes)
(1) The paper appears translucent
(2) Fat and oil is present in G
H - Contour feather
I - Quill feather
J - Filoplume
K - Millipede
L - Centipede
(i) They protect birds from the cold
(ii) They used for flight
(iii) They provide insulation to birds
(iv) They serve as waterproof to birds
(i) H - It aids in thermoregulation
(ii) J - It helps birds in detecting changes in feather position caused by body movement or wind
K - Diplopoda
L - Chilopoda.
In tabular form
(i) They are more rounded.
(ii) They have two sets of legs per segment positioned directly under their body.
(i) They have a flatter body
(ii) They have one set of legs per segment positioned on the side of their body.
M - Grasshopper
N - spider
O - Larva of a house fly
P - Larva of a mosquito
Q - Flamboyant flower
R - Hibiscus flower
(i) M - Insecta
(ii) N - Arachnida
(i) Specimen N has four pairs of legs.
(ii) It has two additional pairs of appendages.
(iii) Specimen N does not have antennae or wings.
O - Decayng matter
P - stagnant water