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NABTEB 2022 - BIOLOGY PRACTICAL ANSWER
NABTEB 2022 - BIOLOGY PRACTICAL ANSWER

NABTEB 2022 - BIOLOGY PRACTICAL ANSWER



(1i)
(i) Mosses
(ii) Liverworts

(1ii)
(i) Body is coved with hair/fur or wool
(ii) Presence of mammary glands

(1iii)
(i) Possession of long flagellum for locomotion or swimming in water
(ii) Possession of pigment spot, eyespot or stigma for sensitivity to light

(1iv)
(Pick any two)
(i) Drosera
(ii) Venus flytrap
(iii) Nepenthes
(iv) Pinguicula

(1v)
Aorta

(1vi)
(Pick any two)
(i) Large quantities of pollen grains produces
(ii) Flowers are small and inconspicuous
(iii) Flowers are dull and not scented
(iv) Nectaries are absent

(1vii)
(a) Conduct water from the roots through the stem to the leaves.
(b) Translocate manufactured food from the leaves to other parts of the plant

(1viii)
(a) By the use of cilia
(b) By using flagellum

(1ix)
Ribosomes

(1x)
(Pick any four)
(i) Wearing of nose mask
(ii) Washing ones hands properly
(iii) Proper social distancing
(iv) Reducing participation in outdoor activities
(v) The use of hand sanitizers

(1xi)
Anemometer

(1xii)
(i) Enamel
(ii) Dentine
(iii) Cement
(iv) Pulp cavity

(1xiii) A flower is complete when all the four floral whorls (calyx, corolla, androecium and gynaecium) are present

(1xiv)
Mitochondrion

(1xv)
(Pick any two)
(i) Pairing
(ii) Display
(iii) Territoriality
(iv) Seasonal migration

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

(2ai)
Specimen A ---- Groundnut plant
Specimen B ---- Maize plant
Specimen C ---- Cassava stem

(2aii)
Specimen A ---- Anuual plant
Specimen B ---- Annual plant

(2bi)
In a Tabular Form

SPECIMEN A
(i) Tap root present
(ii) Leaves are oval with reticulate venation

SPECIMEN B
(i) Prop roots present
(ii) Leaves are elongated with parallel venation

(2bii)
Specimen C store carbohydrate

(2ci)
Propagated vegetatively by stem cutting

(2cii)
SEEDS OF SPECIMEN A
(i) It is used in making groundnut oil, preparation of soup

SEED OF SPECIMEN B
(i) It is used in making maize floor which is used in preparing food, serves as food for poultry and livestock

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


(3ai)
SPECIMEN D
- Scapula of a rabbit or any young mammal

SPECIMENS E
- Femur bone of a rabbit or any small mammal

(3aii)
SPECIMEN D
- Found at the upper thoracic region on the dorsal surface of the rib cage or upper arm to the thorax, or trunk of the body.

SPECIMEN E:
- Located in the thigh or upper bone of the leg or hind leg.

(3bi)
FUNCTIONS OF SPECIMEN D:
(Pick any one)
(i) Provide attachment to muscles
(ii) Brings about movement
(iii) Gives support
(iv) Gives shape

FUNCTIONS OF SPECIMEN E
(i) It helps in walking or movement

(3bii)
(In a Tabular form)
SPECIMEN D
(i) It is long
(ii) it has a distinct head

SPECIMEN E
(i) It is flat
(ii) It has scapula blade

(3c)


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

(4ai)
SPECIMENS F ---- Tranverse section of orange fruit

(4aii)
Class Dicotyledoneae

(4bi)
Axile placentation

(4bii)
Vitamin C

(4ci)
(i) Lemon
(ii) Mango

(4cii)
(Pick any one)
(i) By seeds
(ii) By grafting or budding

(4d)
It is used in making fruit drink or orange juice

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

(5)





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