2020/2021 WAEC/NECO Answers: 2020 neco Gce biology answers



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This is actually the 2019 neco Gce biology answersAnswers as questions sent to our subscribers on WHATSAPP, if you are looking for 2020 WAEC/NECO Answers midnight before the exam, try contacting us.

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(5ai)
(i) Regulation of extracellular fluid volume. The kidneys work to ensure an adequate quantity of plasma to keep blood flowing to vital organs.
(ii) Regulation of osmolarity.
(iii) Regulation of ion concentrations.
(iv) Excretion of wastes and toxins.
(v) Production of hormones.
(vi) Regulation of pH.

(5aii)
[Pick Any TWO]
(i) Frequent urination.
(ii) Excessive thirst.
(iii) Unexplained weight loss.
(iv) Extreme hunger.

(5b)
Click Here
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(3ai)
In a tabular form:

POLLINATION:
(i) It occurs only in flowering plants.
(ii) It involves only one sex cell type (male).
(iii) It requires external agents.
(iv) No fusion of gametes involved.

FERTILIZATION:
(i) Occurs in all sexually reproductive plants.
(ii) Involves two sex cells types (male and female).
(iii) Does not require external agents.
(iv) Involves fusion of gametes.

(3aii)
(i) Wind
(ii) Insects

(3bi)
(i) Herbivores
(ii) Carnivores
(iii) Omnivores

(3bii)
(i) Herbivores -Goat
(ii) Carnivores - Lion
(iii) Omnivores - Man

(3Ci)
(i) It kills aquatic organisms.
(ii) It makes water unsafe for consumption and domestic uses.
(iii) It reduces light penetration in water hence affecting aquatic plants.
(iv) It puts fishermen out of business.

(3cii)
(i) It transport unwanted materials to sites of excretion
(ii) It transport nutrient to all body cells
(iii) It helps in fighting infection
(iv) It brings about clotting.


(3)
CLICK HERE FOR THE IMAGE
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(2a)
CLICK HERE FOR THE IMAGE

(2bi)
(i) Eyelids
(ii) Conjunctive
(iii) The eye socket

(2bii)
(i) Cutting
(ii) Layering
(iii) Marcotting
(iv) Budding

(2ci)
(i) Precipitation
(ii) Condemnation
(iii) Evaporation

(2cii)
(i) P.H
(ii) Current
(iii) Pressure
(iv) Waves
(v) Sunlight
(vi) Turbidity
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(1ai)
Transpiration is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves.

(1aii)
PLS TABULATE:

MITOSIS:
(i) Occurs in somatic cell/growth of somatic cells; (ii) Diploid cell formed
(iii) Two daughter cells are formed (iv) Chromosome number of parent is same as that of daughter cell

MEOSIS:
(i) Occurs during gamete/sex cell production
(ii) Haploid cell formed
(iii) Four daughter cells are formed
(iv) Chromosome number of parent twice that of daughter cells

(1b)
[Pick any FOUR]
(i) They are protein in nature
(ii) They remain chemically unchanged at the end of a reaction;
(iii) They are denatured/destroyed at high temperature/inactivated at very cold temperatures
(iv) Enzyme action is retarded by poison or inhibitors
(iv) Enzymes are soluble
(vi) They speed up rate of biochemical reactions in cells

(1ci)
Human beings are solely dependent on photosynthetic plants for their oxygen requirements
(ii) It decreases the concentration of carbon dioxide and other harmful industrial wastes that leads to respiratory problems in living beings.

(1cii)
[Pick any TWO]
(i) Gonorrhea
(ii) Human Immunodeficiency Virus (HIV)
(iii) Syphilis
(iv) Genital Herpes

(1ciii)
(i) Sutures found between the bones of the skull
(ii) Syndesmosis between long bones of the body



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A1: 1 x 4 = 4 B2: 3 x 3.6 = 10.8 C4: 1 x 2.8 = 2.8 Total points: 4 + 10.8 + 2.8 = 17.6 Now, we divide the UTME by 8 i.e 280 ? 8 = 35 So, the aggregate score will be 17.6 + 35 + Post-UTME score.


A1: 1 x 4 = 4 B2: 3 x 3.6 = 10.8 C4: 1 x 2.8 = 2.8 Total points: 4 + 10.8 + 2.8 = 17.6 Now, we divide the UTME by 8 i.e 280 ? 8 = 35 So, the aggregate score will be 17.6 + 35 + Post-UTME score.

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Under the new WAEC grading system, A1 is Excellent, B2 Very Good, B3 Good, C4, C5 and C6 are interpreted as Credit, D7 and D8 are interpreted as Pass, while F9 is Fail. A1 and B2 in the WASSCE means Excellent, B3 is B (Very Good), C4 is C (Good), C5 and C6 are D (Credit), D7 and E8 are E (Pass) and F9 is F (Fail).


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You are required to get at least a credit pass (50%) in your core subjects. Under the new WAEC grading system, A1 is Excellent, B2 Very Good, B3 Good, C4, C5 and C6 are interpreted as Credit, D7 and D8 are interpreted as Pass, while F9 is Fail.


How is Waec aggregate calculated?

A1: 1 x 4 = 4 B2: 3 x 3.6 = 10.8 C4: 1 x 2.8 = 2.8 Total points: 4 + 10.8 + 2.8 = 17.6 Now, we divide the UTME by 8 i.e 280 ? 8 = 35 So, the aggregate score will be 17.6 + 35 + Post-UTME score.


waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Is e8 a pass mark?


waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam
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