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(1ai)
Experiment to demonstrate osmosis in a living tissue(Yam tuber)
(1aii)
A-The volume of the sugar solution in the yam tuber increases
B-The volume of water in the yam tuber remains unchanged
(1aiii)
It serves as the semi-permeable membrane
(1aiv)
Set up B serves as the control experiment
(1av)
-Cellophane paper
-Pig bladder
(1avi)
-It makes osmo-regulation possible
-It enhances regulation of waterin the urinary tubules
(1bi)
Toad
(1bii)
I-Webbed digit
II-Nostril
IV-Tympanum
V-Nictating membrane
(1biii)
Amphibian
(1biv)
-Possesion of webbed digit for swimming
-Possesion of wide mouth for sieving and eating
-Possesion of long hind limb for escape
(1ci)
Atlas
(1cii)
I-Neural spine
II-Neural arch
III-Neural canal
IV-Vertebraterial canal
V-Centrum
(1ciii)
Neck
1bi) Specimen c = Toad
1biii) Class Amphibian
1biv) – For vison
– Locomotion
=======================
2ai) E = Tomato Fruit
F = Cowpea fruit
G = Coconut fruit
2aii) E = Man
F= Explosive mechanism
G = Water
2aiii) i – Stalk
ii – Endocarp
iii – Seed
iv – seed
v – Endocarp
vi – Mesocarp
2bi) Bird
2bii) Aves
2biii) i – Head
ii – Beak
iii – Opening into the eye
iv – Wing cover
v – Foot
vi- Claw
2biv)
i – For picking grains
ii – To detect Vibration
iii- For flight
iv – for scratching the sand or fround
v – For steering during flight
=======================
3bi.
I structure of the sperm >>spermatozoa
II. Acrosome
I. Nucleus rich in DNA
III. Mitochondria
Iv.Tail sheath
3i. It enhances penetration of eggs during fertilization.
ii. Help to move
Number one
1ai)
Specimen A — Elephant
Specimen B —Grasshopper
Specimen C — Lizard
Specimen D — Housefly
(1ai)
Specimen A – Elephant Grass.
Specimen B- Grasshopper
Specimen C- Lizard.
Specimen D – Housefly.
(1aii)
Specimen B – Insecta
Specimen C – Reptilia in the sub-phylum vertebrata.
(1aiii)
Specimen D
Houseflies serve as intermediate hosts for several parasitic worms Eg Round worms in their developmental stage.
(1aiv)
Specimen B:
(i) Has fore and hind wing for flight.
(ii) Has cuticle to minimize loss of water.
(iii) Has antenna for feeling.
Specimen C:
(i) limbs are developed for movement on land.
(ii) dry scaly skin to protect it from drying up.
(iii) its digits end in claws for grasping and climbing
(3)
(i) Flamboyant flower
(ii) Filament
(iii) Style
(iv) Sepal
Filament: it attaches the base of the flower and support the anther
Style: it assist with fertilization by being the location where pollen tubes travel to deliver sperm cells to the egg
Petals: it attracts pollination such as butterflies, bees and bats
(1ai)
Specimen A – Elephant Grass.
Specimen B- Grasshopper
Specimen C- Lizard.
Specimen D – Housefly.
(1aii)
Specimen B – Insecta
Specimen C – Reptilia in the sub-phylum vertebrata.
(1aiii)
Specimen D
Houseflies serve as intermediate hosts for several parasitic worms Eg Round worms in their developmental stage.
(1aiv)
Specimen B:
(i) Has fore and hind wing for flight.
(ii) Has cuticle to minimize loss of water.
(iii) Has antenna for feeling.
Specimen C:
(i) limbs are developed for movement on land.
(ii) dry scaly skin to protect it from drying up.
(iii) its digits end in claws for grasping and climbing
*Snt*
2ai)
G=Coconut fruit
H=cashew fruit
I=tomato fruit
J=tridax fruit
*snt*
(3)
(i) Flamboyant flower
(ii) Filament
(iii) Style
(iv) Sepal
Filament: it attaches the base of the flower and support the anther
Style: it assist with fertilization by being the location where pollen tubes travel to deliver sperm cells to the egg
Petals: it attracts pollination such as butterflies, bees and bats
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