2024 WAEC GCE SECOND SERIES (NOV.) BIOLOGY: Practical Biology (Bio) WAEC GCE Second Series (November) Authentic Answers 2024 (5432)

(2a)

(i) Presence of horn in A and absence in B

(ii) Presence of flat forehead in A

(iii) Presence of drooping ear in A

(iv) Presence of fatty hump in A but slim in B

(v) Presence of hump at the back of A but absent in B

(vi) Presence of horn in cattle B

(vii) Cattle has a black shaded skin

(2b)

TABULATE:

(i)

A: Presence of horn

B: Absence of horn

(ii) 

A. Presence of hump

B. Absence of hump

(iii)

A. Large body size

B. Small body size

(iv)

A: Possession of black skin

B: Possession of black and white skin

(2ci)

Let D represent patched skin.

Let d represent hairy skin

Patch skin cattle × hairy skin cattle 

[Draw the diagram]

[https://i.imgur.com/ay0GTH0.jpg]

(2cii) 

Monohybrid inheritance 

(2ciii) 

First law of genetics or law of segregation of gene

(2civ) 

Dd

(2d)

(i) DD

(ii) dd

(3a)

A - Cactus

B - Waterleaf (Talinum triangulare)

(3b)

TABULATE:

 HABITANT:

A -  Desert

B -  Banks of ponds

REASONS:

UNDER A:

(i) Leaves are reduced to spine to reduce to water loss

(ii) Thick stem to conserve water.

UNDER B:

(i) Shallow root

(ii) Has no elaborate water storage

(3c)

TABULATE:

A:

(i) Leaf of A are reduce to spine

(ii) Presence of sunken stomata

(iii) Absence of flowers

(iv) Absence of wide lamina

B:

(i) Leaves of B are wider not reduced  to spines

(ii) Absence of sunken Stomata

(iii) Presence of Flowers

(iv) Presence of wide lamina on the leaves

(3di)

(PICK ANY TWO)

(i)Leaves are reduced to spines

(ii)Thick waxy cuticle is present

(iii)Thick stem is present

(3dii)

(i)Provides vitamins and minerals that boosts animal immunity

(ii)Provides antioxidant in animal diet and acts as mild laxatives

(iii)Provides fibre and energy to animals (carbohydrates)

(3e)

(i)Kingdom - Plantae

(ii)Division - Tracheophyta

(iii)Class - Angiosperm

(3fi)

Magnification = image length/ actual length

= 10cm/200cm 

= 'copied from e x a m p l a z a . c o m free' 0.05

(3fii)

Liliopsida

(3fiii)

(i) Parallel-veined leaves

(ii) Scattered vascular bundles in the stem

(iii) Seeds with a single cotyledon

(3fiv)

Distichous