Author Topic: CORRECT: 2024 WAEC BIOLOGY ANSWERS (PRACTICAL) (Read 4120 times)

MANDINHO · « **on:** May 22, 2024, 05:45:37 pm »

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MANDINHO · « **Reply #1 on:** May 24, 2024, 11:00:16 am »

BIOLOGY PRACTICAL ANSWERS

(1a)
Phylum: Chordata
Class: Aves

(1b)
(i)Dark red color
(ii)Smooth texture
(iii)Irregular shape

(1c)
(i)metabolizing nutrients and detoxifying harmful substances.
(ii)stores essential nutrients such as vitamins and minerals.
(iii)regulate blood sugar levels and cholesterol levels.

(1cii)
Spec D. Grinding: The gizzard helps grind food particles before digestion.
Spec E. Absorption: The intestine absorbs nutrients from digested food.

(1ciii)
Spec D; possession of grit
Spec E; possession of large surface area

(1d)
TABULATE
Under observation
(i)red litmus turn blue
(ii)No effect on blue litmus

-Under inference-
(i) Alkaline
(ii)Not acidic

(1dii)
(i)emulsification of fats
(ii)Give forces it's colour
(iii) Digestion

(1ei)
Digestive system

(1eii)
D

(1fi)
Heterotrophic

(1fii)
Maize

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(2a)
(i)for propagation
(ii)serve as storage organ
(iii)For photosynthesis
(iv)For gaseous exchange

(2bi)
Spec F; for propagation
Spec K; serve as storage organ

(2bii)
Spec F; it is reproductive in nature
Spec K; due to the nature of it surface

(2biii)
Spec F; root
Spec K; stem

(2c)
TABULATE
Under: Spec F;
(i)small size
(ii)Presence of nodes
(iii) terminal bod id present
(iv) Absence of adventurous root

Under: Spec K;
(i)big size
(ii)Absence of node
(iii)terminal bod is absent
(iv)presence of adventurous root

(2cii)
Grey colour

(2d)

===================================

(3a)
-L: Thoracic vertebra (located in the chest region)
-Q: Lumbar vertebra (located in the lower back region)

(3bi)
TABULATE PLEASE

=UNDER L=
(i) Generally smaller and more uniform in size compared to lumbar vertebrae.
(ii) Has facets for rib articulation (costal facets).
(iii) Spinous process is long, slender, and points downward
(iv) The vertebral body is heart-shaped.

=UNDER Q=
(i) Larger and more robust to support greater weight and provide stability.
(ii) Lacks costal facets as they do not articulate with ribs.
(iii) Spinous process is shorter, broader, and points more horizontally.
(iv) The vertebral body is more kidney-shaped and thicker to bear more weight.

(3bii)
(i) Both have a central opening (vertebral foramen) through which the spinal cord passes.
(ii) Both have superior and inferior articular processes for articulation with adjacent vertebrae.
(iii) Both have transverse processes projecting laterally from the vertebrae
(iv) Both are part of the vertebral column and share a common structural design with a body, a vertebral arch, and processes.

(3ci)
-M (humerus): scapula (shoulder blade) and radius/ulna (forearm bones)
-P (femur): pelvis (hip bone) and tibia/fibula (shin bones)

(3cii)

-Before L (thoracic vertebra): cervical vertebra
-After L (thoracic vertebra): lumbar vertebra

-Before Q (lumbar vertebra): thoracic vertebra
-After Q (lumbar vertebra): sacrum (fused vertebrae)

(3d)

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Author Topic: CORRECT: 2024 WAEC BIOLOGY ANSWERS (PRACTICAL) (Read 4120 times)

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