100% Real Waec Gce 2015 Biology Practical Answers.


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(1ai)
I-flower
II-hypocotyl
III-stem
IV-margin
V-midrib
VI-node/leaf stalk
VII-inflorescense
VIII-leaf

(1aii)
I-it carries out reproduction
II-it provides a space for the growth of flower
V-holds other part of the leaf together
VIII-aids the absorption of sunlight ie the
photosynthesis

(1bi)
A-Monocotyledon
B-Dicotyledon

(1bii)
A
-it has one seed leaf
-it has a parallel vein
B
-leaf has net vein
-it has two seeded leaf

1c)
A-rice,oil palm
B-groundnut,cowpea,mango

1di)
-A has parallel vein while B has net vein
-A has one seed leaf while B has two seed
leaves
-A has vibrous root while B has tap root
-A has the female and male parts of the flower
at
different part while B has both the male and
female
parts at the same part of the flower
-A is a grass with long and narrow leaves
while B is a
legume with broad leaves

1dii)
-They are both flowering plants
-They are both seed plants
-They are both vascular plants

2a)
Food web

2b)
Producer(grass)
->primary consumer(cane
rat,grasshopper,mouse)
->secondary consumer(fox,lizard,snake)
->tertiary consumer(man,hawk,Eagle


2ci)
I-The population of the lizards will increase
II-More energy would be passed into the chain in
the web containing grasshopper,lizards,hawk and
man
III-Less energy might be available to mouse
I-The population of lizards would decrease
II-Less energy would be passed into the chain
containing lizards
III-more energy would be available to mouse and
cane rat

2d)
-Grass->mouse->snake->eagle->man
-Grass ->mouse ->Hawk->man
-Grass->mouse->snake ->eagle

4ai)
C-volvox
D-bacterium
E-spirogyra

4aii)
I-flagellum
II-cytoplasmic connection
III-Cell
IV-cilia
V-granules
VI-nucleic material
VII-slimy capsule
VIII-chloroplast


4bi)
C-colony
D-cell
E-filament

4bii)
-Each cell can function as an independent living
cell capable of cellular differentiation
-They can exist as colony or filament on their own

4biii)
-C doesnt have cell wall while E has cell wall
-C doesnt have chloroplast while E has
chloroplast
-C doesnt have pyrenoid while E has pyrenoid

4c)
-They are producers
-They produce organic matter for agriculture
-They are used as food for man
-They are decomposers

4cii)
-Rat flea/plague
-Tuberculosis
-Pneumonia
-Meningitis

4di)
C-flagellum
D-cilia

4dii)
microscope

4e)
-They both posses nucleic materials
-They are both one celled that are capable of
independent life


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