Biology NECO ORAL HAS BEEN POSTED HERE...clic To See It

By 07:25 Tue, 25 Jun 2013 Comments


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Tuesday 25th June

Paper II: Objective & Essay - Biology 10.00 am -

12.30 pm

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NECO BIOLOGY

OBJECTIVE AND ESSAY

1-10: ADBBEDABEB

11-20: ABECBCEBAA

21-30: BBCEBBAABD

31-40: ABAADADEAC

41-50: CBCEACBBAB

51-60: EDCDCCAEDE

4(a)i 1 it results to continous

dehydration

2 it causes exhaustion

3 it may lead to blurred vision 4 it also leads to loss of

weight

ii 1 remoaval of meta ic waste

product from the

body

2 maintaining the balance

between water and salts in the

body

(b)i 1 erosion . 2. heavy rainfall

ii 1 international red cross

society

2 united nations childrens education fund

(UNICEF)

3 world Health orgnization

(WHO)

4 Nigerian medical association

(NMA) (C)i 1 sunlight 2.salinity 3.wind

4.temperature

ii 1it leadsto cellular differention

2 their surface area to volume

ratio is small

iii 1 olumu forest reserve in kwara

2 yankari game reserve in

bauchi state

3 Borgu game reserve in Niger

state

3(a)i Diffusion is the rapid movement of

molecules of

substances gas,or liuid from a

higher

concentration to a

lower concentration .it occurs in living orgnism

ii 1 gamates are formed/no

gamates are formed

2 involves fusion of male and

female gametes/no

fusion occur

3 zygote is formed/no zygotes

if formed

4 usually involves two

individuals/only one

organism involved

(b)i external respiration is the

exchange of gases

between

the environment and

respiratory organs of organism.

ii 1 it provides food for both

plants and animals

2 it release oxygen to the

environment

3 it serves as a building blocks for substances

4 it involves in the purification

of the atmosphere

(c) i 1.dodder 2.mushroom

3.venus sun trap

ii 1 possession of pairs of limb 2 possession of feather

3 possession of wings

4 possession of pentadacty

3(a)i Diffusion is the rapid

movement of

molecules of substances gas,or liuid from a

higher

concentration to a

lower concentration .it occurs in

living orgnism

ii 1 gamates are formed/no gamates are formed

2 involves fusion of male and

female gametes/no

fusion occur

3 zygote is formed/no zygotes

if formed 4 usually involves two

individuals/only one

organism involved

(1a) Draw and label yourself

(1bi) eyelid and cornea

(1bii)

- it brings about shortage of

blood

- it brings about disease

epidemy

-it brings about discomfort

(1ci)

- Pappus

-Tridax

-Mustard seed

(1cii)

Efferent nerve cell

Afferent nerve cell

4ai)

-excessive urine

-weakness of the body

-irregular heartbeat

4aii)

-it excretes nitrogenous waste

-it regulate water level

4bi)

-poor housing plan

-poor drainage system

4bii)

-DFID

-RED CROSS

-WORLD HEALTH ORGANIZATION

-ENVIRONMENT AGENCY

4ci)

-temperature

-high salinity

-hydrogen ion concentration

-high pressure

4cii)

-diffussion of labour gives room

for

efficient exploitation ofthe

environment

-specialization of various cell

4ciii)

-yankari game reserve

-olomu game reserve

-borgu game reserve

(2ai)Ecosystem is a unit which

involves the relationship

between plants and animals and

their relationship between them

and their environment

(2aii)

- Fire disaster brings about

distruction of soil fertility

- Its brings about death of useful

soil organisms like earthworm

-it exposes the soil todirect solar

radiations

-it enhances problem of soil

erosion

(2bi)

-Evaporation

-Condensation

-Precipitation

(2bii) Tabulate

Endocrine system: it involves

hormones in action

Nervous system: it nvolves

electrical reflexes

Endocrine system: it isslow

action

Nervous system: it is fast action

Endocrine system: it issecreted

by special organ

Nervous system: it is not

secreted but exerted

Endocrine system: transmit effect

through blood

Nervous system: transmit effects

through nerves

(2c)

Micro orgnism is an orgnism or

living component which cannot

be seen through the naked eyes

but through microscope

(2cii)

- Blood aids in transmission of

digested food substances to

where they are needed

-White blood cells (lymphocytes)

help in fighting against

infections

-Red blood cells (erythrocytes)

help in transport of oxygen

during respiration

- Blood helps in transportation of

waste products to their

excretory organs.


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