2024 WAEC GCE FIRST SERIES (JANUARY) BIOLOGY: 2024 WAEC GCE First Series Biology Questions (Practical) Questions and Answers (3740)

(2ai)

X - Leaf

Y - Stem

Z - Root

(2aii)

X - C

Y - B

Z - D 

(2b)

(i) Xylem - B 

(ii) Phloem - D 

(2c)

(i) It transports water and nutrients from the plant to stems and leaves.

(ii) It translocates water and products of photosynthesis from source tissues.

(2d)

(i) Pith

(ii) It stores and transports nutrients throughout the plant.

(2ei)

Dicotyledonous

(2eii) 

(i) Reticulate venation is present in the leaves.

(ii) Primary root radicle persists as Taproot.

(iii) Flowers tetramerous or pentamerous.

(2f)

X - It produces food for the plant by photosynthesis

Y - It conducts water and minerals to the leaves

Z - It absorbs water and nutrients from the soil.

(2g)

(i) Translocation

(ii) Transpiration

(3ai)

Mosquito

(3aii)

A: Pupa

B: Eggs

C: Adult

D: Larva

(3bi)

Complete metamorphosis

(3bii)

Because it consists of four stages where larva is very different in form from the adult.

(3ci)

I - Feathery hair

II - Respiratory trumpet

III - Egg raft

IV - Proboscis

V - Antenna

VI - Wing

VII - Hindleg

VIII - Siphon

IX - Lateral hair

(3cii)

II - For breathing

IV - Mosquito uses it to feed on flower nectar and fruit juices

V - For odour detection and feelings

VI - For flight

VIII - To breathe air at the water surface

X - It generates feeding current used by the larva to glide slowly through the water

(3d)

B-->D-->A-->C

(Eggs ---> Larva ---> Pupa ---> Adult)

(3e)

C:

(i) Use of adulticides

(ii) Change of bird drinking water

(3e)

C- (i) use of insecticides

ii) keeping environment clean 

D(i) Dumping or removing standing water in and around your home

ii) using larvicides

(3f)

(i) Possession of siphon for breathing

(ii) Possession of strainers for trapping plankton and particles for its filter feeding

(3ai)

Mosquito

(3aii)

A: Pupa

B: Eggs

C: Adult

D: Larva

(3bi)

Complete metamorphosis

(3bii)

Because it consists of four stages where larva is very different in form from the adult.

(3ci)

I - Feathery hair

II - Respiratory trumpet

III - Egg raft

IV - Proboscis

V - Antenna

VI - Wing

VII - Hindleg

VIII - Siphon

IX - Lateral hair

(3cii)

II - For breathing

IV - Mosquito uses it to feed on flower nectar and fruit juices

V - For odour detection and feelings

VI - For flight

VIII - To breathe air at the water surface

X - It generates feeding current used by the larva to glide slowly through the water