100% Real Waec Gce 2015 Biology Practical Answers.

By 02:48 Sun, 13 Sep 2015 Comments


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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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