NECO Biology Questions and Answers for 2023
by Srinithi
Updated Jul 26, 2023
NECO
The National Examination Council (NECO) is a prominent examination body in Nigeria responsible for conducting two major examinations: the Senior Secondary Certificate Examination (SSCE) and the General Certificate in Education (GCE). These examinations play a vital role in the educational system of the country and are conducted in two sessions, namely June/July and November/December.
1. Senior Secondary Certificate Examination (SSCE):
The SSCE is one of the most significant examinations conducted by NECO. It is taken by students who have completed their senior secondary education, usually at the end of their final year in high school. The examination assesses students' knowledge and understanding of various subjects, including core subjects like Mathematics, English Language, and the Sciences, as well as elective subjects based on students' chosen fields of study. The SSCE results are crucial for students' progression to higher education, as they are often required for university admissions and other educational opportunities.
2. General Certificate in Education (GCE):
The General Certificate in Education (GCE) is another vital examination conducted by NECO. Unlike the SSCE, the GCE is available for private candidates who are not enrolled in regular schools. It offers an opportunity for individuals who may have missed the opportunity to take the SSCE during their school years or wish to improve their grades. The GCE is available in both the June/July and November/December sessions, providing flexibility for candidates to choose the most suitable time to sit for the examination.
Both the SSCE and GCE examinations are essential for measuring the academic performance of students and providing a standardized assessment of their knowledge and skills. NECO plays a crucial role in ensuring the fairness and integrity of these examinations, maintaining strict protocols to prevent malpractice and ensure the credibility of the results.
NECO's examination process involves thorough preparation, including the setting of examination questions, moderation, and validation to ensure the accuracy and appropriateness of the content. During the examination period, NECO oversees the conduct of the exams in various centers across Nigeria, ensuring that all procedures are adhered to and that the examination environment remains conducive and fair.
After the exams, NECO's team of examiners diligently mark and grade the answer scripts, following established guidelines and marking schemes. This process is undertaken with utmost care and transparency to provide students with accurate and reliable results.
The results of both the SSCE and GCE examinations are released to the candidates and made available to schools, institutions, and relevant authorities for further evaluation and decision-making. Successful candidates are awarded certificates, signifying their achievements in the respective examinations.
In conclusion, the National Examination Council (NECO) is a vital institution in Nigeria's education system, conducting the Senior Secondary Certificate Examination (SSCE) and the General Certificate in Education (GCE) to assess students' academic capabilities. Through these examinations, NECO plays a crucial role in shaping the educational future of students and providing a standardized measure of academic achievement across the country.
NECO Biology Questions and Answers For 2023
NUMBER ONE
a (i) the cell Theory state that all living things are made up of a cell which is the structural and functional unit of life. That new cells arise from pre-existing cells by cell division.
Ii.
b (i)
ii.
c. When bread is ingested in the mouth, batang mixes it with saliva which contains ptyalin converting it into maltose. It enters the muscular chamber the stomach, it is churned and retained for three to four hours. It then passes to the small intestine where it is acted upon by amylopsin to complete breakdown to maltose and alkaline, intestinal juice that break down maltose to glucose. The glucose is absorbed and transported by capillaries to the liver which processes it. Undigested food passes to the large intestine where water is absorbed and makes the wastes to become semi solids called faeces. The faces then pass into the rectum and out of the body via the anus.
NUMBER FOUR
(4ai)
(PICK ANY THREE)
(i) The crops with tap roots should be followed by those with fibrous root system.
(ii) Selection of the crop should be demand based.
(iii) The selection of crops should be problem based.
(iv) The selection of crops should suit to the farmer’s financial conditions.
(v) More exhaustive crops should be followed by less exhaustive crops.
(vi) The crops selected should also suit to the soil and climate conditions.
(vi) The crops selected should also suit to the soil and climate conditions.
(4aii)
(PICK ANY FIVE)
(i) The presence of thick, waxy cuticles on leaves:
(ii) Stomata present in the upper epidermis only:
(iii) Shrinking of hinge cells when flaccid:
(iv) Flashy succulent leaves:
(v) Have reduced number of stomata:
(vi) Sunken stomata or presence of crypts and leaf surface covered with fine hairs.
(vii) Closed stomata in the presence of light and opened stomata in the absence of light:
(viii) Leaves are reduced to spines, needles, or scales and they are folded or rolled when flaccid
(4bi)
(i) Feathers : Feathers are modified scales that provide insulation and enable flight in birds. Some fossil reptiles, such as Archaeopteryx and Microraptor, also had feathers, suggesting that they were an ancestral trait that evolved before the divergence of birds and reptiles.
(ii) Bones : Birds have hollow bones that reduce their weight and enhance their flight ability. Some fossil reptiles, such as Coelophysis and Pterosaurs, also had hollow bones, indicating that they were an adaptation to a fast and agile lifestyle.
(iii) Eggs : Birds lay hard-shelled eggs that protect their embryos from dehydration and predation. Reptiles also lay hard-shelled eggs, implying that they share a common reproductive strategy that originated in their ancient ancestors.
(4bii)
(PICK ANY FIVE)
(i) Regulates amino acids.
((ii) Regulates blood clothing
(iii) Stores Vitamins and Minerals.
(iv) Processes glucose
(v) Filters blood
(vi) Bile production
(vii) Albumin production
(viii) Resists infections.
(4c)
(PICK ANY FOUR)
(i) Reforestation.
(ii) Afforestation
(iii) Protect Existing Forests.
(iv) Sustained Yield Method.
(v) Produce Less Waste
(vi) Monitor Agriculture
(vii) Planned and Regulated Tree-cutting
(viii) Laws and Rules Help Prevent Deforestation.
(5bi)
(PICK ANY TWO)
(i) Calyx protects the flowers in bud condition from the outer injury.
(ii) The calyxes are usually green in colour, but sometimes, it may be coloured as petalloid, which attract insects and helps in pollination.
(iii) In certain cases, calyx develop spur and can store nectar and helps in seed dispersal.
(5bii)
(PICK ANY FIVE)
(i) Testosterone
(ii) Thyroxine
(iii) Estrogen
(iv) Adrenaline
(v) Epinephrine
(vi) Progesterone
(vii) Glucagon
(viii) Growth hormone
(ix) Cortisol
(x) Gonadotropin releasing hormone (GnRH).
(5ci)
(PICK ANY TWO)
(i) Studies of inheritance
(ii) Mapping disease genes.
(iii) Diagnosis and treatment.
(iv) Genetic counseling.
(5cii)
(PICK ANY THREE )
(i) Chloroplast contains a photosynthetic pigment called chlorophyll.
(ii) The stomata are located on the backside of the leaves which helps regulate water loss from the leaves.
(iii) Leaves have a thin structure so that they can provide a short distance for carbon dioxide to diffuse into leaf cells
(iv) The veins of leaves help to transport maximum water molecules and water to all parts of the leaves.
(v) The plant produces larger leaves, which means a larger surface area for maximum absorption of sunlight.
BIOLOGY OBJECTIVE SOLUTIONS
01-10: BBEDAACADA
11-20: DDCEADDAEC
21-30: BBBBEDDBDD
31-40: EDACCCBCEA
41-50: EBBCACBABC
51-60: DDABEDDDBE
NECO Biology Exam Timetable 2023
Practical
Tuesday, 11th July 2023
Biology (Practical)
10:00am – 12:00noon
Date
Subject
Time
Objective & Essay
Date
Subject
Time
Tuesday 21st July 2023
Biology (Paper III & II: Objective & Essay)
10:00am – 12:30pm
NECO Biology Questions and Answers For 2023-FAQ
NECO stands for the National Examination Council, an examination body in Nigeria.
NECO conducts the Senior Secondary Certificate Examination (SSCE) and the General Certificate in Education (GCE).
The SSCE is taken by students who have completed their senior secondary education to assess their knowledge and understanding of various subjects
The GCE is available for private candidates who are not enrolled in regular schools and offers an opportunity for individuals to take the examination.
NECO follows strict protocols to prevent malpractice and ensure credibility, including thorough preparation, examination supervision, and accurate marking and grading of answer scripts.