NECO Biology Questions 2023 Obj & Essay Expo Answers

July 21, 2023

NECO Biology Questions 2023: Get NECO Biology Objective & answers questions and answers for Friday, 21st July 2023, Paper III & II: Objective & Essay – Biology – 10:00am – 12:30pm.

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NECO Biology Questions 2023 Objective and Essay

BIOLOGY OBJECTIVE

01-10: BBEDAACADA
11-20: DDCEA

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NECO Biology 2023 Objective and Essay Questions

(3ai)
(PICK ANY TWO)
I. Rivers
II. Streams
III. Ponds
IV. Lakes
V. Wetlands

(3aii)
(Pick any Two)

TABULATE
Complete Metamorphosis:
i• Egg stage, Larva stage, Pupa stage, Adult stage
ii• Development is gradual
iii• Larvae and adults have different shapes and characteristics
iv• Wings develop inside the pupal stage
v• Development is slow

Incomplete Metamorphosis:
i• Egg stage, Nymph stage, Adult stage
ii• Development is abrupt
iii• Nymphs and adults have similar shapes and characteristics
iv• Wings develop outside the nymph stage
v• Development is fast
_______
_______

3b (loading)…..

(3ci) Pick any four

i. Over-Fertilization: Excessive use of chemical fertilizers and pesticides can deplete the soil of essential nutrients and minerals, leading to poor soil fertility.

ii. Overgrazing: Overgrazing of livestock can cause soil erosion, compaction, and nutrient depletion.

iii. Deforestation: Removal of trees and other vegetation from the land can cause soil erosion and nutrient depletion.

iv. Monocropping: Growing the same crop in the same place year after year can lead to depletion of soil nutrients and increase the risk of pests and diseases.

v. Acid Rain: Acid rain can leach essential nutrients from the soil, leading to poor soil fertility.

(3cii)
Pick any two
i. Loss of Soil Fertility: Soil pollution can lead to loss of soil fertility due to the accumulation of toxic chemicals and other pollutants.

ii. Loss of Biodiversity: Soil pollution can lead to decreased biodiversity due to the destruction of habitats for organisms that rely on healthy soil.

iii. Contamination of Groundwater: Soil pollution can lead to contamination of groundwater due to the leaching of pollutants into the s…

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