Welcome to Waec 2021 Biology Practical Answer

Welcome to Waec 2021 Biology Practical Answer as I Congratulations for your search here as NAIJACLASS is the Number one Trusted Exam Specialists, An expert in all Exams Sector; we assist candidates to pass various examinations with ease.

 

“”WAEC 2021 BIOLOGY PRACTICAL ANSWERS””
=====================

WAEC 2021 BIOLOGY PRACTICAL ANSWERS
=======================

(2a)
PLEASE TABULATE

= D
-Two observation-
(i) Gives greenish leaves
(ii) Gives a growing seedlings

-Results-
Positive growth

= E
-Two observation-
(i) No growth observed
(ii) Wet soil

-Results-
Negative growth

= F
-Two observation-
(i) No growth observed
(ii) Dey soil

-Results-
Negative growth

= G
-Two observation-
(i) No growth observed
(ii) Extremely dry soil

-Results-
Negative growth

(2bi)
E – Excess water
F – Depletion of soil nutrient
G – Absence of water or soil moisture

(2bii)
(i) Well ventilated soil
(ii) Good and rich in nutrient soil

(2c)

==========================

(1ai)
A – Neck
B – Chest
C – Upper abdominal region of the body

(1aii)
A – It aids the odontoid process of the head
B – It aid the attachment of ribs
C – It bears majority of body weight

(1bi)

(1bii)
(i) Neural canal; It allows the passage of the spinal cord
(ii) Centrum; It is a solid piece of bone found below the neural canal
(iii) Transverse process; It aids the attachment of muscle and ligaments
(iv) Neural spine; The aids the attachment of muscles

(1ci)
A – 7
B – 12
C – 6

(1cii)
(i)Sacral vertebrae
(ii) Caudale vertebrae

=========================
(4ai)
Phylum
L – Arthropoda
M – Arthropoda

(4aii)
Class
L – Insecta
M – Insecta

(4bi)
(i)They have an exoskeleton or a hard, shell-like covering on the outside of its body.
(ii)Insects have three main body parts: head, thorax, and abdomen.
(iii)Insects have a pair of antennae on top of their heads.

(4bii)
(i)myriapods
(ii)arachnids
(iii)crustaceans

(4ci)
L
(i)moveable head
(ii)stagnant water

M
(i)oversized compound eyes
(ii)grasslands

(4cii)
(i)Controlled by Mosquito Traps
(ii)Controlled by Space sprays
(iii)Controlled by Mechanical Barriers
(iv)Controlled by
Vegetation Management.
(v)Controlled by outdoor measures.

(4d)
TABULATE PLS

– H (ADULT MOSQUITO)
(i) Smaller in size
(ii) A Pair of wings
(iii) Absence of hard hind wings
(iv) Absence of maxillary palp/maxilla
(iv) Absence of spines on legs

– M(BUTTERFLY)
(i) Big in size
(ii) Two pairs of wings
(iii) Presence of hard hind wings
(iv) Presence of maxillary palp/maxilla
(v) Presence of spines on legs

==============================

Send Your

===> 1. MTN Recharge Card Pin.
===> 2. Paid Subject(s):
===> 3. Phone Number:
Send to 09069072051 to get waec Biology Practical answer for today

 

 CLICK HERE TO ENTER YOUR PIN

ABOUT US

Naijaclass is an online Platform; A subsidiary school news portal for aspirants, students, graduates and interested individual of various schools which kicked off July 1st, 2014 with an aim of providing useful and valuable information about Higher Institutions News, Online CBT Practice for Waec, Neco, Nabteb & Jambite, Scholarships, Study-abroad, health, Career and much more to students at all levels of education to happy visitors About us in Nigeria and in the diaspora.

 

PLEASE NOTE:

ONLINE PIN/PASSWORD: These are candidates that receive a password/pin to view answers posted on our answer page.
They must have a working network to enable them to browse.

WHATSAPP: These are candidates that receives their answers on whatsapp chat.
You must subscribe with your WhatsApp Number.

WARNING: Always Subscribe A Night Before Exam To Get Your Pin As soon as possible!! ALSO, If You Know You are Subscribing For WhatsApp Solution, You Must Subscribe with Your WhatsApp Number At least A Day Before The Exam So we can Register You Well…

========================

WE ONLY ACCEPT MTN CARDS AS MODE OF PAYMENT

RESULT REVIEW:
Our Answers will give you a good result of A1, B2, and the minimum of B3.

NOTE:-
PLEASE DON’T CALL US!.
WE ACCEPT ONLY TEXT MESSAGES.
OUR NUMBER IS NOT AVAILABLE FOR CALLS BUT CAN RECEIVE AND REPLY TO TEXT MESSAGES ONLY.
Always Send Us SMS Of Your Complaint.
==============================