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2020 NECO Biology Objectives Questions and Answers
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NECO 2020 Biology theory Questions and Answers
Below are NECO Biology Past Answers
1ai) Morphological variation refers to the noticeable physical appearance of individual of the same species . for example in human beings morphological variation include, height of the body , shape of the body etc.
1aii)Pollination: The transfer of pollen from the anthers of a flower to the stigma of the same flower or of another flower.
1aiii)niche:is a term that is used in ecological biology to define an organism’s
role in an ecosystem.
—Both processes release energy
—-. Both start with the breakdown of a
—–. Both yield byproducts
—– Rapid population growth
——- cost of fertiliser and transport
—Embryo with two cotyledons
—– Flower parts in multiples of four
—- Roots develop from radicle
—- Pollen with three furrows or
Do it in a tabular form
1) oxygen is required in aerobic while oxygen is not required in anaerobic
2) in aerobic More energy is required while in anaerobic less energy is required
1bi)both aerobic and anearobic respiration lead to the loss of energy
Ii) Both occur in plants and animal cell
Iii) Both processes require enzymes to speed up the reactions
1biii) 1 draught, 2)overpopulation 3)flood 4) pests 5) poor storage facilities
1c) Ecological Niche refers to the specific portion of a habitat which is occupied by a particular species or organism
i)nutrition is the act of feeding of animals
ii) mutation is the splitting of a cell into simpler ones which have the same characters and features of the bigger ones
3iii) Gene are hereditary units or basic units of inheritance. They are located in chromosomes and are responsible for the transmission of character from parents to the offspring
3bi) The light rays from the object pass through the
conjuctiva, cornea, aqueous humour, lens and
vitreous humour in that order. All these
structures refract the light such that it falls on
the retina. This is called focussing. Maximum
focussing is done by the cornea and the lens.
The light then falls on the retina.
This light is received by the photoreceptors –
rods and cones, on the retina. The absorbed light
activates the pigments present in the rods and
cones. The pigments are present on the
membranes of the vesicles. Thus, the light is
then converted into action potentials in the
membranes of the vesicles. These travel as
nervous impulses through the rod or the cone
cell and reach the synaptic knobs. From here the
impulses are transmitted to the bipolar nerve
cells, then to the ganglions and then to the optic
nerves. Thus the nervous impulses generated in
the retina are carried to the brain by about a
million neurons of the optic nerve. The vision is
controlled by the occipital lobe at the back of
the brain. The information received is processed
and we are able to see the image. The image
formed on the retina is inverted. However, the
brain makes us see the image erect. So, though
the eyes are essential for vision, any damage to
the optic nerves also results in impairment of
3bii) differencea between between amoeba and euglena
Amoeba: Heterotroph by phagocytosis
Euglena: Autotroph by photosynthesis and
heterotroph by ingestion
How to Answer NECO 2020 Biology Questions
Student Looking for NECO Biology Answers are advised to adopt the following
Preparation is the key to Success, anybody looking for any other way to pass NECO 2020 Biology apart from good preparation is looking for a way to fail. seat tight and study your books and pass NECO Biology can never be a problem to you.
Use Good Biology Textbooks
There is nothing good as sound textbooks. The textbooks are your companion. Make good use of Biology textbooks in addition to your class note and you will see yourself solving complex Biology questions. One textbook is not enough, some textbooks make topics that seems to be hard in others simple. You are advised to make textbooks your companion.
Pray is the key is the master key, never rely solely on your own effort, God is there to help you. Your prayer to the Almighty God will open the door of Success in your Exams. Believe in God your creator and all your problems is over.
Time management is very important as long as NECO 2020 Biology is concerned. Make sure you don’t waste time when attempting any question. Answer Questions You Know better before proceeding to try others. Be mindful of the time given and the number of questions you are to answer before the time elapses.
Adhere to instructions
Any candidate they refuse to adhere to the Examination Instructions is planning to fail. The instructions there are for you not for the invigilators. Adherence to instructions gives you a better chance of passing NECO Biology 2020.
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