WAEC 2016 MAY/JUNE 100% CORRECT BIOLOGY PAPER 2 ,ESSAY,THEORY (Essay),PAPER 2,ESSAY,THEORY(Obj),QUESTIONS AND ANSWERS – FOR ESSAY,THEORY AND OBJ

REFRESH EVERY 5MINS

BIOLOGY OBJ:
1-10: DCDACACCDC
11-20: CCBDADBBCD
21-30: DCBDDDBACB
31-40: CDABBBBDDB
41-50: DBCAABADBC

1a)
-Single/independent free living organism eg amoeba
-As a colony eg volvox
-As a filament
eg spirogyra

1b)
-Amoeba
-Volvox
-Spirogyra

1ci)
-Plant cell are rectangular in shape while Animal cell are
spherical in shape
-Plant cell contain chloroplast while animal cell do not
contain chloroplast
-Plant cell contain cell wall while animal cell do not contain
cell wall
-Plant cell nucleus is at the side while the animal cell is at
the middle

1cii)
-They both have nucleus
-They both have mitochondrion
-They both have endoplasmic reticulum

3ai)
A habitat comprises of an organism immediate environment
or where it lives or resides

3aii)
-They help in the decay of the organisms
-They also help to return certain substances like gases eg
Nitrogen to the atmosphere thereby regulating certain
biological processes such as the Nitrogen cycle,carbon cycle
-Some of the substances released are important in
processes such as respiration,photosynthesis

3b)
Energy flows basically from the producers in a fresh water
habitat to the consumers.The producers usually are
phytoplanktons which are taken up by the primary
consumers usually small fishes.The primary consumer are
taken up by the secondary consumers which are larger
fishes such as sharks.This sharks may inturn be taken up by
man which is the tertiary consumer
SCHEMATIC DIAGRAM
Phytoplanktons->Small fishes->Sharks->Man

3c)
-They causes diseases such as rice smut,black pod of cocoa
which may lead to waste
-They also reduce the economic value of plants leading to
financial loss

3cii)
-They help in fermentation of certain substances like
yughourt eg lactobacillus species
-They help in decomposition and decay of substances eg
sprophytic micro organism
-They causes diseases eg smallpox and chicken pox hence
have been useful tools in the development of antibiotics and
vaccines
-They are useful in certain biological processes eg
photosynthesis
-They are used in sewage treatment
-Sources of enzymes

2a)
Mouth,Oesophagus,Stomach,Duodenum,Small
intestine,Caecum,Appendix,Large intestine,Rectum,Anus

2bi)
TABULATE
Alimentary canal of birds|Alimentary canal of man
-There is presence of crop|Crop absent
-There is presence of proventiculus|Proventiculus absent
-There is presence of gizzard|Gizzard is absent

2bii)
-Both have caecum
-Both have Oesophagus
-Both have duodenum

2c)
Herbivore posses heterodant type of dentition in which they
posses teeth of different shapes and sizes.Herbivores feed
mainly on vegetable hence its teeth is 28 in numbers.Its
incisors are flat with sharp cutting edges for cutting
vegetables or grasses .canine is absent.the space creates
due to absense of the canine is called diastema.Diastema
allows manipulation of grasses in the mouth.It has a very
large molar and premolar closely packed and have very
large ridged surface area for cutting and grinding

2d)
-They help in regulation of blood sugar by producing
insuling and glucagon
-They help in digestion

 

6a)
-Tactic movement movement is found in some plant and
animals while nastic movement is found in plants alone
-Tactic movement rsponse to directional stimuli while nastic
movement respond to non directional stimuli
6bi)
-Euglena
-Chlamydomonas
6bii)
-Mimosa plant
-Sunflower
6ci)
-Regular cleaning
-Exposure to fresh air
-Eating balanced diet
-Regular exercise
6cii)
-Temperature
-pressure
-Pain
-Cold
6d)
-High temperature affect evaporation and reduces
performance
-High temperature may lead to seed dormancy
-It leads to loss of soil nutrients through evaporation
-It affects the ripening and maturity of plant
-it is necessary for germination of seeds
6ei)
Courtship behaviour refers to the instructive behaviour on
response to certain external stimuli in animals.It is the
pattern of behaviour that preceeds mating and reproduction
in animals.It is performed by male and female organism
6eii)
-pairing
-Teritoriality
-Display
6f)
-Holozoic nutrition
-Amoeba
-Entamoeba histolytica
-Humans
6g)
Crime detection using finger print method: this applies to
forensic.In this method,individuals having different finger
print pattern can be identified using database of stored
information of such individuals.These method correctly
identifies such individuals aptly and is useful in crime
detection

WARNING:- Please Dnt Even Come for Free Answers, Coz it Would’nt be
Post. Take me Serious. Make Sure you Subscribe if you Dont Want to be
on Hot Seat. Wishes you Best of Luck.

++++++++++++++++++++++++++++++

I PITY THOSE THAT COPY

WRONG ANSWERS FROM OTHER SITES. USE OURS IF U WERE DIRECTED HERE WE
CONFIRM B4 DISTRIBUTION.