1i
-axial placentation
-marginal placentation
1ii
a.mammals-kidney
b.unicellular organism-contractile vacuoles
iii.alleles are the alternative forms of a gene
iv.
a.plants-glycosides
b.animals-urine
v.
-wind
-animal
-water
vi.competition can be defined as the interaction between member of the same population or of two or more populations to obtain a mutually needed resource that is in short supply in their environment
vii.
-By planting cover crops
-by mulching
-by afforestation
viii.
Hyphid number is 23
ix.Deoxyribonuclei acid
x.colour of the skin
height
xi.
-Chlorophyll
-sunlight
xii
lamarck
charles Darwin

xiii.virus can reproduce

xiv.protophyta

xv.Excretion is the removal of waste substances from the body of a living organism
2ai.microscope
2aii.
a-eyepiece lens
b-tube
c-objective
d-objective lenses
e-stage
f-Diaphragm
g-illuminator
h-Base
i-Coarse focus
j-fine Focus
2iii
-eyepiece contains a magnifying lens that focuses the image from the objective into your eye
-fine focus-for focusing under low magnification
b.plan cell
-plant cell has cellulose cell wall
-plant cell is larger
Animal Cell
-cellulose cell wall is absent
-animal cell is smaller

similarities between them
-both have cell membranes
-they possess nuclei
2c.
Plant
-growth is indefinite
-growth is apical
Animal
-growth is definite
-growth is intercalany
2d.
-Title of the experiment
-aim of the experiment
-materials for the experiment
-method employed
-observation,result,and conclusion

3a.hinge joint
3ii.
I.bone
ii.muscle
iii.synovial membrane
iv.synovial fluid
v.articulate cartilage
vi.ligament
3aiii.
-for protection
-for support
3iv.
Exoskeleton-arthropods
endoskeleton-man
3b.
-mandible
-maxillae
-labrum
3c.
-the forebrain
-the midbrain
the hindbrain

4ai.Adrenaline
-function:emergency hormone it helps organism to respond quickly and energetically to danger
-Effect of under secretion:causes decrease in conversion glycogen to glucose
-Effect of Over secretion:leads to body agitation
ii.THYROXINE
FUNCTION:regulates the growth and development of body cells
EFFECT OF UNDER SECRETION:causes gretinism(dwarfness)
EFFECT OF OVER SECRETION:cause enlarged throid gland known as goiture
iii.INSULIN
-FUNCTION:helps in the convasion of excess glucose to glycogen
EFFECT OF UNDER SECRETION:causes diabetes mellitus
EFFECT OF OVER SECRETION:causes the blood glucose level to fall below normal level

b.aquatic habitat-marine habitat
estuarine habitat
-Terrestrial habitat-tropical rain forest

c.alge->mosses->fern->flowering plants

d.first aid treatment is the first treatment given to an injured person

5ai.kidney
5ii.
i.cortex
ii.renal artery
iii.renal vein
iv.ureter
vi.apex of pyramid

5iii.upper left part of the abdomen
5iv.
III-it drains fittered deoxygynated blood from the kidney to the posterior vena cava

IV-it connects the kidney to urinary bladder

5v.
Kidney stones
glomecular nephritis

5b.
It helps in genetic therapy
it helps to determine the paternal of a child
it helps in counselling for rheses factor

c.
AIDS-acquire immune deficiency syndrome
HIV-HUMAN IMMUNE VIRUS