The National Examination Council (NECO) Has Scheduled The NECO Biology Essay and Objective 2024 Questions And Answers Paper To Take Place on 2nd July, 2024.
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NECO Biology 2024 Questions And Answers
(1ai)
(PICK ANY THREE)
(i) Producers
(ii) Consumers
(iii) Decomposers
(iv) Parasites
(v) Symbionts
(1aii)
(i) Mandibles
(ii) Maxillae
(iii) Labium
(1bi)
(i) Ultrafiltration: The initial step in blood filtration occurs in the glomerulus of a nephron, where pressure causes water, ions, glucose, urea, and small proteins to pass out of the blood vessels into the Bowman’s capsule (glomerular filtrate).
(ii) Reabsorption: As the glomerular filtrate moves through the renal tubules, essential nutrients, glucose, water, and most ions are reabsorbed back into the bloodstream. This selectively conserves nutrients while eliminating waste products.
(iii) Secretion: Some substances, such as hydrogen ions (H+), potassium (K+), creatinine, and urea, are actively secreted from the bloodstream into the renal tubules, further concentrating the urine.
(iv) Concentration: The collecting duct and loop of Henle regulate the final water and ion balance of the urine, ensuring that waste products are sufficiently concentrated.
(1bii)
(PICK ANY TWO)
(i) Malleus
(ii) Incus
(iii) Stapes
(iv) Stapedius
(1biii)
[in a Tabular form]
-Photosynthesis-
(PICK ANY TWO)
(i) Process that uses sunlight to convert carbon dioxide and water into glucose
(ii) Occurs in plant cells, algae, and some bacteria
(iii) Releases oxygen as a byproduct
(iv) Builds organic molecules (anabolism)
(v) Takes place during the day in sunlight
-Respiration-
(PICK ANY TWO)
(i) Process that breaks down glucose to release energy
(ii) Occurs in all living cells
(iii) Consumes oxygen
(iv) Breaks down organic molecules (catabolism)
(v) Takes place continuously, day and night
(2ai)
(PICK ANY FOUR)
(i) Lightweight bones
(ii) Strong flight muscles
(iii) Streamlined body shape
(iv) Hollow feathers for insulation and buoyancy
(v) Wings modified from forelimbs
(vi) Air sacs to reduce body density
(2aii)
(i) Pollination vector (e.g., insect, bird, wind) comes into contact with the flower.
(ii) Pollen grains from the another stick to the vector’s body.
(iii) The vector carries the pollen to another flower of the same species.
(iv) Pollen grains are transferred to the stigma of the flower.
(v) If pollination is successful, the pollen tube germinates and grows down the style, delivering sperm cells to the ovary.
(vi) Fertilization occurs when a sperm cell fuses with an egg cell in the ovary, resulting in seed formation.
(2bi)
(PICK ANY THREE)
(i) Sticky tongue for catching insects
(ii) Large, bulging eyes for increased field of vision
(iii) Camouflage skin for blending into the environment
(iv) Nocturnal habits to avoid predators
(v) Movable eyelids for protection
(vi) Glandular skin for defense against predators
(2bii)
[In a Tabular form]
-Arteries-
(PICK ANY FOUR)
(i) Carry blood away from the heart
(ii) Thicker, more muscular walls due to higher blood pressure
(iii) Narrower lumen (inner diameter)
(iv) Elastic recoil to maintain blood pressure
(v) Provide nutrients, oxygen, and hormones to tissues
(vi) Oxygenated blood, except for pulmonary arteries
(vii) High blood pressure
-Veins-
(PICK ANY FOUR)
(i) Carry blood towards the heart
(ii) Thinner, less muscular walls due to lower blood pressure
(iii) Wider lumen
(iv) Valves to prevent backflow of blood
(v) Collect deoxygenated blood from tissues
(vi) Return blood to the heart for reoxygenation
(vii) Low blood pressure
(3ai)
(PICK ANY FOUR)
(i) Phototropism
(ii) Gravitropism
(iii) Thigmotropism
(iv) Hydrotropism
(v) Chemotropism
(vi) Seismonastic
(3aii)
(PICK ANY TWO)
(i) Loss of fertile topsoil
(ii) Reduction in water retention capacity
(iii) Increased flooding and sedimentation
(iv) Decline in crop yields and vegetation cover
(v) Loss of biodiversity
(3bi)
Grass → Grasshopper → Lizard → Hawk
(3bii)
Check the diagram below
(3biii)
(PICK ANY TWO)
(i) Oxygen
(ii) Water
(iii) Glucose
(iv) ATP
(4ai)
(i) Humerus
(ii) Radius
(iii) Ulna
(4aii)
Check the diagram below
(4bi)
(PICK ANY THREE)
(i) Insulin
(ii) Glucagon
(iii) Thyroid hormone
(iv) Adrenaline
(v) Cortisol
(vi) Estrogen
(4bii)
-Amoeba-
(PICK ANY ONE)
(i) Food vacuole
(ii) Plasma membrane
(iii) Contractile vacuole
-Hydra-
(PICK ANY ONE)
(i) Gastrovascular cavity
(ii) Gastrodermis cells
(iii) Choanocytes
-Earthworm-
(PICK ANY ONE)
(i) Nephridia
(ii) Flame cells
(iii) Chloragogen cells
-Grasshopper-
(PICK ANY ONE)
(i) Malpighian tubules
(ii) Rectum
(iii) Hindgut
(4biii)
-Mitochondria-
(PICK ANY ONE)
(i) Produce energy (ATP)
(ii) Regulation of cell death
(iii) Control of cellular metabolism
(iv) Protein synthesis
(v) Calcium homeostasis
-Lysosomes-
(PICK ANY ONE)
(i) Digesting food particles and old organelles
(ii) Detoxification and removal of waste products
(iii) Regulation of cell death (autolysis)
(iv) Defense against pathogens
(v) Bone resorption
(5a)
Draw the diagram below
(5bi)
[In a Tabular form]
-Monocot Plants-
(PICK ANY TWO)
(i) Single cotyledon in the seed
(ii) Parallel leaf veins
(iii) Scattered vascular bundles in the stem
(iv) Flower parts in multiples of three
(v) No secondary growth (no cambium)
(vi) Endosperm in the seed
-Dicot Plants-
(PICK ANY TWO)
(i) Two cotyledons in the seed
(ii) Netted leaf veins
(iii) Vascular bundles arranged in a ring in the stem
(iv) Flower parts in multiples of four or five
(v) Secondary growth (presence of cambium)
(vi) No endosperm in the seed
(5bii)
(PICK ANY FOUR)
(i) Comparative Anatomy: Similarities in the structures and organs of different species, indicating common ancestry.
(ii) Paleontology (Fossil Record): Remains of extinct organisms provide evidence of evolutionary change over time.
(iii) Biogeography: Distribution of species on Earth supports the idea of evolution through diversification and dispersal.
(iv) Molecular Biology: Similarities in DNA and protein sequences indicate shared ancestry and evolutionary relationships.
(v) Vestigial Structures: Structures that have no apparent function present in an organism that suggest its evolutionary history.
(vi) Developmental Biology: Embryological similarities in different species indicate common evolutionary origins.
(vii) Genetic Variation: Mutations and recombination provide raw material for natural selection to work with.
(5biii)
(i) Hinge Joints
(ii) Pivot Joints
(iii) Ball-and-Socket Joints
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NECO Biology 2024 Paper is Categorized in to 2 parts:
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