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#Post#: 296--------------------------------------------------
FREE 100% CORRECT WAEC GCE BIOLOGY PRACTICAL ANSWERS
By: Ebenezer Date: September 20, 2013, 10:38 am
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(1ai) human foetus in uterus
(1aii)
I is placenta
II is umblical cord
III is amnion
IV is uterus
V is vagina
VI is cervix
VII is uterus wall
VIII is foetus
IX Amniotic cavity
X is oviduct
(1aiii)
I is placenta it produce hormones which help the mother to adapt
to pregnancy
IV is uterus:it helps in obtaining nourishment
(1bi) The part VIII receives oxygen, water and other nutrients
from the mother through the placenta and it also passes out its
waste product through the same placenta to the mother.
(1bii) The process is Fertilization. It occur between the egg
cell of the mother and spermatozoa of the father. this process
occur at the upper part of the oviduct. Immediately after the
fertilizatin at the oviduct implantation of the fertilized egg
will occur in the uterus where the baby is attached for further
development.
(2ai)savanna
(2aii) I-it has moderate rainfall.
II-It has tall grasses.
(2bi) Abiotic factors: I-climate factor e.g wind.
II-chemical factors e.g water.
III-edaphic factors e.g PH.
IV-Topographic factors e.g hills
(2bii)instrument-Wind vane :it is used to measure wind
direction.
(2ci)
- It increases the number of the plant
(2cii)
i. Plant : palm tree
ii. Animal : bush rat
(2di)
Plant:
- It has very long stem
-it has very strong tap root
Aminal:
-They have limbs that for locomotion within the forest
- They have strong tooth for feeding
(2dii)
Plant:
- long leaves for photosynthesis
- Tap root to absorb water from soil
Animal :
- Limbs for fast movement
- strong teeth for carnivorous
(4a) Thick
1. Planaria : Thick only (pharynx)
2. Earthworm : Thick ( pharynx, Gullet, crop, Caecum, Rectum)
3. Crockroach: Thick all
4. Tilapia: Thick ( pharynx, Gullet,stomach,Rectum)
5. Frog: Thick (pharynx, Gullet,Caecum, Rectum)
6. Lizard: Thick (pharynx, Gullet,stomach,Caecum, Rectum)
7. Bird: Thick all
8. Rabbit: Thick (pharynx, Gullet,stomach,Caecum, Rectum)
9. Cow: Thick (pharynx, Gullet,stomach,Caecum, Rectum)
10. Human: Thick (pharynx, Gullet,stomach,Caecum, Rectum).
(4bi)
-it involves in digestion of protein
-it helps the body in secretion of acids
-it helps the body in secretion of enzymes
-it aids drugs metabolism through it secretions
-it also help in absortion of nutrients to the body.
#Post#: 297--------------------------------------------------
Re: FREE 100% CORRECT WAEC GCE BIOLOGY PRACTICAL ANSWERS
By: Ebenezer Date: September 20, 2013, 10:52 am
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(4bii)
-food gets to the mouth where starch is being digested
-it is rolled into bolus in the mouth and passes through the
oesophagus to the stomach with the help of pepsin and renin
digest caesinogen
-the stomach food becomes chyme and move to the duoenum of the
small intestine where further digestion occur.
-digested food is absorbed by the body while the undigested one
moves to the large intestine for reabsorption of water and
finally passes out through the anus
(4c)
-stomach constipation
-diurhesis
-vomitting
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