NECO Biology Free Expo Questions and Answers 2021/2022 – Objectives & Essay

 

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NECO Biology Questions and Answer 2021, Date & Time Thursday 5th August

  • Paper III & II: Objective & Essay – Biology – 10:00am – 12:30pm

NECO English Language Exam Questions and Answers 2021 Objectives Answers (Expo)

01 – 10:  ABBDEADBDC
11 – 20:  BCCDDECDCA
21 – 30:  DCEAEBBDAA
31 – 40:  BBACAECAAB
41 – 50:  ECDCBCECCC
51 – 60:  ECBCDDDEAE
51 – 60:  DBBDCAAEBC

 

NECO English Language Essay Answers 2021(Expo)

ii)Mutualism; this is the relationship between two organisms in which both benefited from the association.

1.ci)

(i)Epigeal germination

(ii)Hypogea germination

 

1.cii)

(i)Amoeba

(ii)Paramecium

(iii)Euglena

 

1.ciii)

(i)Salting

(ii)Smoking

(iii)Freezing

 

2.ai)

-Symptoms-

(i)High fever

(ii)coughing

(iii)sneezing

(iv)headache and body pain

 

-prevention-

(i)Regular hand washing

(ii)maintenance of social distance

(iii)use of hand sanitizer with high alcoholic content

(iv)avoidance of handshakes

 

2.aii)

(i) they have two seed leaves or cotyledon

(ii) there floral parts are in four or fives

(iii) there vascular bundles are in concentric circles

(iv) there root develop from the radicle

 

(2b)

 

(2bii)

(i)Possession of the leaves that helps in floatation

(ii)their stomata are located on the surface of the plant for easy gaseous exchange

(iii)Possession of little or no root system.

 

3ai)

Pathogen; this is defined as any organisms capable of causing diseases

 

3aii)

Haemolysis; this can be defined as the breaking down of the red blood cells or corpuscle due to high passage of water into it

 

3aiii)

Deforestation; this can be defined as the indiscriminate falling of forest trees

 

3b)

(i)Quadrat

(ii)Sweep net

(iii)Role (for transact method)

(iv)Thermometer

 

3c)

The pinna collects sounds waves in air and pass them through external auditory canal. The waves cause the vibration of the tympanic membrane which passed on to the ear Ossicles that amplify them. The round oval window vibrates and passes the waves into the cavity of the inner ear or cochlea where the perilymph and endolymph vibrate the sensory nerve cells vibrate and stimulate the auditory nerve cells which then transmit the impulses to the brain for interpretation.

 

3.di)

Calyx; it protects the flower which is in the bud

 

(3dii)

Corolla; it attract pollinators.

 

4a)

Make Sure Your Drawing is (8-10cm Long)

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