Evolving Wisdom NECO Biology Practical Questions and Answers 2021 - Specimen

NECO Biology Practical Questions and Answers 2021/2022 (Complete Solutions)

NECO SSCE biology Practical. Many students keep searching for the 2021 biology Practical Questions and Answers, likely questions, past questions and answers, questions for practice, NECO Biology Practical specimen and so on. If you are asking any of these questions or any other, you are in the right place.

NECO biology

In this post, I will give you free access to the 2021 NECO biology Practical Questions and Answers, specimen and examination details which you need to know including the right steps to take if you must this year’s biology Practical examination.

SEE: NECO TIMETABLE

2021 NECO Biology Practical specimen

  • 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)

NECO Practical Biology Questions and Answers

Note: The 2021 NECO Practical Biology answers (expo) will be posted here during the NECO Biology Practical exam. Keep checking and reloading this page to know when the answers are posted. Do not forget to reload this page in order to see the answers.

NECO Biology Practical Answers 2021 Loading…keep refreshing this page for more answers.

Today’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.

Practical answers

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.

SEE ALSO:

NECO physics practical Questions and Answers

NECO Animal Husbandry Practical Questions and Answers

NECO chemistry practical Questions and Answers

NECO Data processing practical questions and answers

How to pass your NECO biology Practical examination

Before I give you these helpful tips, it is important for you to know that both your biology Practical examination and the Objective questions and answers (paper I, II & III) are counted together and your grade dully awarded.

Make use of NECO biology Syllabus

Syllabus gives you the area of concentration for each subject such that you don’t have to read the whole book before you pass. It also contains the recommended textbooks for each subject.

Use the Practical manual

Once you lay hold of the Practical manual, do well to start practicing the questions and answers there in. No need to wait till the examination period before you start.

Study the specimen

The specimen comes out before the examination date. Do well to study their possible questions and answers. NECO Biology Practical questions come from the approved specimen. In the same manner, you are expected to give answers relating to those specimen. So, earlier you start to study them, the better for you.

Read more about how to pass any kind of Examination.

Leave a comment