NECO Biology Practical Questions & Answers [22nd July, 2021]


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Get Free Live 2021 NECO June/July Biology (BIO) (Practical) Specimen Questions and Answers for NECO June/July Candidates Free of Charge | NECO June/July Free Biology Practical Specimen Questions and Answers EXPO Room (22nd July, 2021).

NECO JUNE/JULY 2021 FREE BIOLOGY PRACTICAL SPECIMEN QUESTIONS AND ANSWER ROOM.

Thursday 22nd July, 2021

Paper I: Practical – Biology
10:00am – 12:00noon

2021 NECO Biology Practical Questions & Answers [22nd July, 2021]

(1ai)
A – Atlas Vertebra.
B – Thoracic vertebra.
C – Scapula.
D – Lumber vertebra.

(1aii)
A – Neck
B – Thorax
C – Pectoral girdle.
D – Abdomen

(1aiii)
In a tabular form
Under A
1. Reduced Neural spine.
2. Centrum Absent.

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Under D
1. Neural spine broad and massive.
2. Centrum present and well developed.

(1aiv)
1. Both B and d have no vertebraterial canal.
2. Both have prominent Neural spines.

(1b)
Draw the diagram

(1ci)
E – Pooter
F – Sweep net
G – Tridax fruit.
H – Tadpole

(1cii)
E – used for sucking in of tiny invertebrates such as insects from leaves.
F – Used for capturing flying insects such as butterfly.

(1ciii)
G is dispersed by wind.

(1civ)
1 – Sticky secretion for clinging to submerged vegetation.
2 – Skin and external gills for respiration.
3 – Tail for swimming.

(2ai)
I – Spirogyra
J – Okro fruit.
K – Mango fruit.
L – Tick
M – Bean weevil.

(2aii)
1. Cup shaped chloroplasts.
2. Green, with cylindrical cells.

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(2bi)
In a tabular form
Under J
1. Dry dehiscent fruit
2. Many seeded.
3. Dispersal by explosion.

Under K
1. Succulent fruit.
2. One seeded.
3. Dispersal by animal.

(2bii)
L – Arachnida.
M – Insecta.

(2biii)
L – Blood sucking of ticks causes irritation.
M – Feed on seeds thereby reducing the quality and value of the beans.

(2ci)
Draw the diagram 

(2cii)
In a tabular form
Under L
1. Have no wings to fly.
2. Has no snout.

Under M
1. Have wings for flying.
3. Has an elongated snout

(3ai)
N – Cactus plant.
O – Water lettuce.
P – Soldier termite.

(3aii)
N – Dry or arid land(terrestrial)
O – Fresh water swamp(aquatic)
P – Soil or wood.

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(3bi)
N
1 – Thick succulent stems for storing water.
2 – Spikes protect cast from animals.
3 – Thick, waxy skin to reduce loss of water and to reflect heat.

O
1 – Tiny hairs on the roots and leaves helps it to float.
2 – Waxy leaves which help water run off easily.
3 – Hairy leaves trap air bubbles, making it survive oxygen deficient mediums.

(3bii)
Draw the diagram 

(3ci)
1 – Good source of animal protein as food
2 – Termites drive earthworms from soil that enhance soil fertility.

(3cii)
Soldier termites defend the nest from enemies and do protect the workers during food gathering.

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