quThe 100% Correct 2015 Waec Gce Biology PRactical Answers

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

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

===KEEP REFREshing==