Friday, 10th June 2022
Biology 2 (Essay) 09:30am – 11:10am
Biology 1 (Objective) 11:10am – 12:00noon
BIOLOGY-OBJ- Examcode.net
BIOLOGY OBJ
01-10: DCADABCADB
11-20: ABDBABDAAA
21-30: ACBABBCBCB
31-40: ABDDDBDACA
41-50: ACCADCDBBA
COMPLETED.
BIOLOGY-ESSAY- Examcode.net
INSTRUCTION: Answer Three Questions In All. Two Questions in Section A and the Compulsory Question in Section B.
(1ai)
A cell can be defined as the basic structural and functional unit of life. All living organism are made up of cells
(1aii)
(i) Robert Hooke
(ii) Felix Dujardin
(iii) Mathias Schleiden
(1bi)
Draw the Diagram
(1bii)
Red blood cell
(1biii)
It does not replicate itself but rather die off
(1c)
(i) Nucleus
(ii) Cell membrane
(iii) Cytoplasm
(iv) Chloroplast
(v) Mitochondrion
(vi) Golgi body
===========================
(2a)
[TABULATE]
(i) – ELEMENT-
Hydrogen
-MACROELEMENT-
Tick ✔️
(ii) – ELEMENT-
Copper
-MICROELEMENT-
Tick ✔️
(iii) – ELEMENT-
Magnesium
-MACROELEMENT-
Tick ✔️
(iv) – ELEMENT-
Zinc
-MICROELEMENT-
Tick ✔️
(v) – ELEMENT-
Phosphorus
-MACROELEMENT-
Tick ✔️
(vi) – ELEMENT-
Maganese
-MICROELEMENT-
Tick ✔️
(vii) – ELEMENT-
Boron
-MICROELEMENT-
Tick ✔️
(viii) – ELEMENT-
Nitrogen
-MACROELEMENT-
Tick ✔️
(ix) – ELEMENT-
Carbon
-MACROELEMENT-
Tick ✔️
(x) ELEMENT
Oxygen
-MACROELEMENT-
Tick ✔️
(2bi)
TABULATE
=HERBIVORE=
(i) Absence of canine
(ii) Presence of diastema
(iii) Weak molar
=CARNIVORE=
(i) Presence of canine
(ii) Absence of diastema
(iii) Strong molar
(2bii)
TABULATE
=HUMAN=
(i) Absence of diastema
(ii) Presence of canine
(iii) Presence of upper incisors
(iv) Presence of upper premolar
=GOAT=
(i) Presence of diastema
(ii) Absence of canine
(iii) Absence of upper incisors
(iv) Absence of upper premolar
(2c)
Milk teeth are the first set of teeth that grows in an infant when they want to start feeding on solid food. It starts to grow 6months after birth. There 20 milk teeth
===========================
(3a)
An ecological niche is the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces.
(3aii)
(i) Organic matter for soil amendment
(ii) Provides fruits
(iii) It serves as a wind breaker
(iv) It absorbs carbon dioxide
(v) It serves as shelter to Animals
(3bi)
(i) Selecting a sample requires less time than selecting every item in a population
(ii) Analysis of the sample is less cumbersome and more practical than an analysis of the entire population
(3bii)
(i) Cluster sampling
(ii) Systematic Sampling
(iii) Simple random sampling
(iv) Stratified Sampling
(3c)
(i) arch
(ii) loop
(iii) whorl
(iv) Plain arch
(3di)
Garden pea plant (Pisum sativumI)
(3dii)
(i) Pea plant are easy to grow, have a short life period, and produce larger flowers.
(ii) Pea plants can also self-pollinated.
===========================
(4ai)
Conservation law states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity which flows in or out of the volume.
(4aii)
(i)Conservation of mass and energy
(ii)Conservation of linear momentum, conservation of angular momentum
(iii)Conservation of electric charge
(4bi)
(i)Lax and broken regulation systems
(ii)Highly-priced and valued animal parts, products, and pets
(4bii)
(i) Elephants
(ii) Rhinos
(iii) Tigers
(iv) Gorillas
(v) Sea turtles
(4c)
(i) Loss of biodiversity, migration of wildlife
(ii) Exological imbalance
(iii) Soil erosion
(iv) Disruption in hydrological cycle of water catchment area
(4di)
A blood transfusion is a routine medical procedure in which donated blood is provided to you through a narrow tube placed within a vein in your arm.
(4dii)
An antigen is any substance to which the immune system can respond. For example, components of the bacterial cell wall can trigger severe and immediate attacks by neutrophils.
SECTION B
Answer All The Questions In This Section.
(5a)
TABULATE
=EARTHWORM=
(i) Straight
(ii) Simple
(iii) It feeds on fluid
=COCKROACH=
(i) Curve
(ii) More enveloped
(iii) It feeds on both fluid and solid
(5aii)
(i)Possession of crop
(ii)Possession of gizzard
(iii)Possession of pharynx
(5b)
(i) Water cycle
(ii) – Plant contribute through transpiration
– Animals contribute through respiration
– Animals contribute through perspiration
(iii)
– X: Condensation
– Y: Transpiration
– Z: Evaporation
(5c)
TABULATE
=ORGAN=
(i) Kidney
(ii) Skin
=DISEASES=
(i) Kidney stones, diuresis and oedema
(ii) Eczema, acne, vitiligo
(5di)
This is a process whereby heterotrophic organisms utilize the remains of one living tissue as a source of nutrition
(5dii)
(i) Fungi
(ii) Bacteria
(5diii)
Temperature
(5div)
Carbon cycle
(5e)
They exhibit heterotrophic nutrition known as carnivorous or insectivorous feeding. They have attractive colours that attracts insects to them. Once the insect lands in their spine, they are killed and digested.
===========================
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