NECO GCE 2024 Biology Obj & Essays Answers

NECO GCE BIOLOGY QUESTIONS

BIOLOGY
01-10: ACACEEDDDB
11-20: DADBADAAEA
21-30: DBAABDEBEA
31-40: CACCCDCBCD
41-50: ABAECEBEDB
51-60: BBBBCCCBBB

COMPLETED

NECO GCE BIOLOGY

NUMBER ONE

(1a)
(PICK ANY FOUR)
(i) Acting as antioxidants to protect cells from damage
(ii) Supporting immune function for overall health
(iii) Helping in the production of red blood cells
(iv) Aiding in the maintenance of healthy skin, hair, and nails
(v) Playing a role in energy production and metabolism
(vi) Supporting bone health and calcium absorption

(1b)
Fruit formation begins with the fertilization of the ovule in the flower, leading to the development of the seed within the ovary. The ovary then begins to grow and mature into a fruit, surrounding and protecting the developing seeds. As the fruit matures, it undergoes changes in size, color, texture, and taste to attract animals for seed dispersal. Once the fruit is fully mature, it is ready to be dispersed, allowing the seeds to be spread and germinate in new locations.

(1ci)
(PICK ANY FIVE)
(i) Singing or vocalizations
(ii) Displays of colorful plumage or markings
(iii) Ritualized movements or dances
(iv) Exchanging gifts or food offerings
(v) Pheromone releases or scents
(vi) Aggressive or territorial behaviors

(1cii)
(PICK ANY FOUR)
(i) Thin and moist to allow for efficient gas exchange
(ii) Large surface area to maximize the exchange of gases
(iii) Well-vascularized to facilitate the transport of gases
(iv) Protected from dehydration or damage
(v) Permeable to gases like oxygen and carbon dioxide
(vi) Adapted to the specific environment and respiratory needs of the organism

(1ciii)
(PICK ANY THREE)
(i) Stomata on the leaves
(ii) Lenticels on stems and bark
(iii) Root hairs
(iv) Hydathodes at leaf margins
(v) Air spaces within the plant tissues
(vi) Cuticles on the surface of leaves

*NECO GCE BIOLOGY*

*NUMBER FOUR*

(4ai)
A balanced diet is a diet that contains all the essential nutrients in the right proportions to maintain good health and proper functioning of the body.

(4aii)
[Draw the diagram]
Reticulate venation refers to a vein arrangement in which the veins form a complex network resembling a web or net. This type of venation is characteristic of dicotyledonous plants (dicots). A prominent midrib runs through the center of the leaf, from which lateral veins branch out. These lateral veins further divide into smaller veins called veinlets, creating the net-like pattern. Example of a plant with reticulate venation is the peepal tree (Ficus religiosa) or rose (Rosa indica).

(4bi)
(PICK ANY FIVE)
(i) Thick cuticle to reduce water loss.
(ii) Reduced leaf surface area to minimize water loss through transpiration.
(iii) Succulent stems or leaves to store water.
(iv) Deep and extensive root systems to absorb water efficiently.
(v) Hairy or waxy coatings to reflect sunlight and reduce water loss.
(vi) CAM (Crassulacean Acid Metabolism) photosynthesis to minimize water loss during the day.
(vii) Ability to go dormant during dry periods.
(viii) Spines or thorns to reduce water loss and protect against herbivores.

(4bii)
(PICK ANY THREE)
(i) Fixed joints
(ii) Freely movable joints
(iii) Slightly movable joints

(4ci)
(PICK ANY FOUR)
(i) Photosynthesis
(ii) Parasitic
(iii) Saprophytic
(iv) Holoparasitic
(v) Mixotrophic
(vi) Symbiotic

(4cii)
(PICK ANY TWO)
(i) Receptacle
(ii) Sepal
(iii) Petal
(iv) Stamen
(v) Pistil
(vi) Ovary

*NECO GCE BIOLOGY*

*NUMBER FIVE*

(5ai)
(i) Hypogeal germination
(ii) Epigeal germination

(5aii)
(PICK ANY FIVE)
(i) Auxins
(ii) Gibberellins
(iii) Cytokinins
(iv) Abscisic acid
(v) Ethylene
(vi) Brassinosteroids

(5b)
(i) Sweating: Sweat glands release sweat onto the skin. As the sweat evaporates, it absorbs heat from the body, cooling it down.
(ii) Vasodilation: Blood vessels near the skin surface widen, increasing blood flow to the skin. This allows more heat to escape through radiation, convection, and conduction.
(iii) Decreased Metabolic Rate: The body reduces its metabolic activity to limit internal heat production.
(iv) Behavioral Adjustments: Actions like seeking shade, reducing physical activity, or drinking water help cool the body.
(v) Panting or Heavy Breathing: Though less common in humans, rapid breathing increases heat loss through evaporation from the respiratory tract.

(5ci)
Draw the diagram below

(5cii)
(PICK ANY TWO)
(i) Lions
(ii) Tigers
(iii) Wolves
(iv) Cheetahs
(v) Eagles
(vi) Sharks