NECO Biology Practical Questions and Answers | Theory and Objectives –Download PDF.

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NECO Biology Practical Questions and Answers | Theory and Objectives –Download PDF.

The National Examination Council of Nigeria (NECO) Examination is around the corner. This article provides the readers with the information on how to download NECO Biology Practical Questions and Answers. NECO Mathematics Questions are essential for you to know if you want to pass the NECO SSCE Mathematics Exams 2021.

NECO Biology Practical Questions and Answers

The NECO Biology Practical questions and answers is a compiled material in PDF that contains past questions from NECO Mathematics Exams of previous years. The material comes with answers and is easily downloadable.

You can download the materials here. The instructions on how to download the NECO Mathematics can be found below. You are expected to follow the instructions in order for you to succeed. The material does not only contain information on NECO Mathematics Questions and answers but how to pass exams as well. You can see this article on the 21 indispensable steps to pass any exams with high grade.

Download also: WAEC past Questions and Answers.

NECO Biology Practical Sample Questions and Answers

NECO Biology Specimen 2021

SPECIMEN A – Atlas vertebra

SPECIMEN B – Thoracic vertebra

SPECIMEN C – Scapula

SPECIMEN D – Lumbar vertebra

SPECIMEN E – Pooter

SPECIMEN F – Sweep net

SPECIMEN G – Tridax fruit

SPECIMEN H – Tad pole

SPECIMEN I – Spirogyra (filaments)

SPECIMEN J – Okro fruit

SPECIMEN K – Mango fruit

SPECIMEN L – Tick

SPECIMEN M – Bean weevil

SPECIMEN N – Cactus plant

SPECIMEN O – Water lettuce

SPECIMEN P – Soldier termite (mandibulate)

oday’s NECO Biology Practical Answers: (2020 Answers)

(1ai)
Specimen; A is yam tuber
Specimen; B is cassava tuber
Specimen; C is quadrant
Specimen; D is insect net
Specimen; E is rain guage
Specimen; F is rice grain
Specimen; G is dry groundnuts seed

(1aii)
Specimen; A is propagated from small tubers
Specimen; B is propagated by stem
Specimen; F is propagated by seeds

(1aiii)
Specimen; C is used for for study of the distribution of an item over a large area.
Specimen; D is used for prevention against insects
Specimen; E is used to measure the precipitating rain

(1aiv)
Diagram of insect net.

(1bi)
(i)The surface of B turn blue-black
(ii)starch is present

(1bii)
Specimen; F grains (cereals)
Specimen; G puises (legume)

(1biii)
(i)The paper appears translucent
(ii) Specimen; G contain fat and oil or fat and oil is present in specimen G

(1biv)
Fat and oil

(2ai)
Specimen; H is contour feather
Specimen; I is quill feather
Specimen; J is Filoplume
Specimen; K is millipede
Specimen; L is centipede

(2aii)
(i)They provide insulation to birds
(ii)Feathers allow for flight
(iii)Feathers are used for defense
(iv)Feathers are used for camouflage

(2aiii)
(i)Wings
(ii)Tail

(2bi)
Diagram of specimen I.

Feather

(2bii)
(i)Specimen; H serve as aerodynamic
devices for flight
(ii)Specimen; J are used principally as insulation, to conserve body heat.

(2biii)
Specimen; K belong to the class Diplopoda
Specimen; L belong to the class Chilopoda.

(2biv)
In tabular form
-Specimen; K-
(i)millipedes are more rounded.
(ii)Millipedes have two sets of legs per segment positioned directly under their body.

-Specimen; L-
(i)centipedes have a flatter body
(ii)Centipedes have one set of legs per segment positioned on the side of their body.

(3ai)
Specimen; M is Grasshopper
Specimen; N is spider
Specimen; O is Larva (house fly)
Specimen; P is Larva ( mosquito)
Specimen; Q Flame of The forest flower
Specimen; R hibicuss flower.

3bii

NECO Bio Practical Practice Questions

The questions below are for practice not the 2020 Biology Practical questions.

1. (a) (i) Phylum of specimens C/Butterfly and E/Grasshopper: Arthropoda

(ii) Reasons for the answer in 1 (a)(i): (I) Metameric segmentation/segmented bodies: (II) Jointed appendages; (III) presence of chitinous exoskeleton/exoskeleton made of chitin; (IV) Bilateral symmetry.

(b) differences between

(i)

C/Butterfly D/Caterpillar
Wings present Wings are absent
Proboscis present Mandibles are present
Proleg absent Mandibles are present
Legs are longer Legs are shorter
Claspers are absent Claspers are present
Has one pair of compound eyes Has simple eyes
Has antennae Absence of antennae
Osmeterium absent Osmeterium present

(ii)

C/Butterfly E/Grasshopper
Presence of proboscis Presence of mandibles
Clubbed/rounded/knobbed antennae Not clubbed/rounded/knobbed antennae/tapering antennae;
Wing is membreneous/soft Harder/less membraneous wings/forewings are leathery
Surface of wing is powdery/have scales/eye spots Surface of wing is not powdery/absence of scales/eye spots;
Hind limbs/legs smaller/shorter/less muscular Hind limbs/legs/larger and elongated/more muscular
Abdomen is hairy Abdomen is not hairy/smooth

(c) Relationship between specimens C/Butterfly and D/Caterpillar:

(i) C/butterfly is the adult/image of D/Caterpillar

(ii) D/Caterpillar is the larva/larva stage of C/Butterfly

(d) (i) Habitat of specimen D/Caterpillar: Garden/Citrus leaves/vegetables/leaves/fruits/green plant has three pairs of true legs with claws for locomotion. (III) it has claspers; for attachment to vegetation/twid; (IV) presence of four pairs of prologs/false legs: for climbing; (V) its coloured pattern; enables it to blend with its environment/camouflages/escape predators; (VI) it has spiracles; for gaseous exchange, (VII) it has simple eyes for vision (VIII) has osmeterium; as defense mechanism/which emits foul smell to scare away predators.

(e) Diagram/drawing of dorsal view of specimen C/Butterfly

2(a)observable features of biological importance in

Specimen F/Carrot: (i) Main root/tap root/swollen/root tuber; (ii) Presence of lateral roots; (iii) Presence of short stem (green) ; (iv) Presence of foliage leaves; (v) Part of main root tapering

Specimen G/Irish potato: (i) Swollen stem/stem tuber; (ii) Bud(s)/ eye; (iii) Lenticels; (iv) scale leaf; (v) adventitious roots(s)

(b) (i) Classification of (I) Specimen F/Carrot: Root tuber; (II) Specimen G/Irish Potato: Stem tuber. Stem (above the swollen tap root). Specimen G/Irish Potato: Swollen, Stem/tuber; presence of bud(s)/eye; presence of scale leaves/leaf; presence of lentice(s).

(c) Class of specimen H and J: insect

(d) (i) Observable differences between specimen H and J.

H/Adult mosquito J/Adult cockroach
Smaller in size Big/large in size
A pair of wings Two pairs of wings;
Absence of hard hind wing Presence of hard hind wing/elytra;
Shorter antennae Longer antennae
Proboscis Mandible
Absence of maxillary palp/maxilla Presence of maxillary palp/maxilla
Thin legs Thick/large legs;
Absence of spines on legs Presence of spine on legs.

(ii) Similarities between specimens H/adult mosquito and J/adult cockroach:

(i) Presence of a pair of compound eyes
(II) Body is divided into three divisions/head, thorax and abdomen
(iii) three pairs of/six(walking) legs
(IV) presence of jointed appendages
(V) presence of a pair of membraneous wings
(VI) Presence of a pair of antenna
(VII) Both have exoskeleton made of chitin
(VIII) Segmented Body.

(i) Feeding Habit of Specimen H/adult mosquito: Piercing and sucking. Specimen J/adult cockroach: Biting and chewing

(ii) Observing features used for feeding in specimen J/adult cockroach: Mandible; maxillae; labrum

4.  (a) (i) Phylum of Specimen R/Earthworm: Annelida

(ii) Reasons for the classification of Specimen R/Earthworm:

(I) Presence of metameric segmentation/segments are separated from each other (by septa
(II) They are bilaterally symmetrical
(II) Segments are separated from each other
(IV) Presence of chaetae
(V) Body is covered by thin collagen cuticle
(VI) body is long and cylindrical.

(iii) Habitat of Specimen R/Earthworm:

(I) Under decaying leaves
(II) Wet/moist soil
(III) In open savanna/savannah beneath tall grasses
(IV) In the forests in decaying tree-stumps.

(b) (i) Features of adaption of Specimen R/Earthworm:

(I) Bristle like Caetae/seatea; for locomotion
(II) Mosit skin; for gaseous exchange
(III) Pointed anterior; for burrowing into the soil
(IV) Slimy body; reduces friction during movements
(V) Citellum; for attachment during exchange of sperms/reproduction/secretes cocoon (in which it eggs are deposited).

(ii) Economic importance of Specimen R/Earthworm:
(I) it aerates the soil
(II) it enriches/improves soil fertility
(III) its secretions neutralize the acid soil
(IV) Used as bait for fishing
(V) As food for some birds.

(c) Diagram/Drawing of the dorsal view of Specimen R/Earthworm

(d) Type of fruit: Specimen S/unripe mango fruit – Drupe, Specimen T/tomato fruit – Berry.

(e) (i) Observable differences between Specimens S and T

Specimen C/Unripe Mango Fruit Specimen T/tomato Fruit
Green in colour Red/Yellow in colour
One seeded Many seeded
Stony/hard endocarp Fleshy/Succulent/Soft endocarp
Fibrous mesocarp Succulent mesocarp
Seed large Seed(s) small;
Basal placentation Axile placentation
Mesocarp and endocarp are fused Mesocarp had endocarp are not fused

(ii) Similarities between specimens S and T:

(I) Both have seeds

(II) both are fruits

(III) Both have three layers/epicarp/mesocarp/endocarp/pericarp/fruit wall

(IV) Coloured epicarp/pericarp

(V) Both have placenta

(VI) Both have thin epicarp

(VII) both have fleshy mesocarp.

How to Download NECO Biology Practical Questions and Answers

Here are the instructions to be followed in order to download the NECO Mathematics Questions and answers without any issue. Please follow our instructions and guide very well.

The cost of the newly updated NECO Past Questions and Answers is 2,000.00 naira only for One Subject e.g

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Download also: The complete NECO Past Questions and answers for all subjects.

Tips on How to Pass NECO Examination 2021

If you want to Past the NECO Examination this year, you will need to follow the instructions below.

  • Practice daily with NECO Past Questions and Answers
  • Write out your subjects, the dates and time.
  • Engage in general revision few days to the examination and dwell more on the subjects you find difficult.
  • Focus on only your first paper a week to the exam. This would make it sweet and you will have energy to read for other papers.
  • Don’t read any other subject when it is two days to a particular subject.
  • When you have two papers that are separated by only one day, read the second one first before going to the subject you have first.
  • Ensure to be in the NECO examination venue at least two hours to the examination so that you would be balanced.
  • Try to be up to date in cases of changes in the timetable.
  • Have a personal copy of the NECO timetable and syllabus.
  • Go through your timetable daily so that you don’t miss any paper.
  • Don’t go to the hall when you are not having paper that day.

Disclaimer: Please note these are not the actual questions and answers that you will find in the NECO Examination this year, but they are the likely questions. to get the actual NECO Past Questions and answers, please call 07063986527.

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