NABTEB BIOLOGY PRACTICAL ANSWERS
1.
i. Blackfly
ii. from the leaves to other parts of plant (upward/downward)
iii. - two parents are involved
- results information of new varieties
iv. (i) - labial palp
(ii) labium
v. artery
vi. because of the high pressure
vii. ciliary muscle alters the focal length
viii. hypothalamus
ix. (i) erythrocyte - transportation of the oxygen from the lungs to the body cell.
(ii) leukocyte - defend body against diseases
x. (i) drying
(ii) smoking
(iii) heating
(iv) freezing
xi. (a) Air - nitrogen oxide, co2 gas
(b) water - sewage, oil spillage
xii. secchi disc
xiii. meiosis
xiv. - has nodes and internides
- presence of creeps under the ground
xv. endolymph
==========================
5. i. graph drawing here
ii. morphological variation
iii - applies in crime detection
- in blood transfusion
=========================
2a. i. light blue precipitate
ii blue colouration
iii. l deep blue colouration
iv. deeply blue colouration
2b. diffusion
2c. - Respiration
- circulation
- excretion
2d. experiment to show the rate of diffusion using crystal
2e. not to alter the natural rate of diffusion.
===========================
4a.
D- cocoyam
E - Bean seed
F - Ginger
G - Onion bulb
H - Maize grain
4c. TABULATE. E - Bean Seed, H - Maize grain
UNDER E - Bean Seed WRITE:
- It is legume
- it is a dicotes
- has broad leaf
UNDER H - Maize Grain WRITE:
- it is a cereal
- it has a monocots
- has slender leaf
4c.
ai. T - tilapia fish
J - toad
aii. I - Aquatic habitat
T - both aquatic and terestial habitats
bi. TABULATE.
I - Tilapia fish and J – Toad
UNDER I - Tilapia Fish write:
1. scales present
2. Presence of fins
3. has tail
4. show parental care
UNDER J - Toad WRITE:
1. scales absent
2. presence of limbs
3. has no tail
4. do not show parental care
bii. - they are cold blooded animal
- both can leave in water
- both are oviparous animals
C.
I - prices: reason - they have two chambered heart.
J - amphibia: Reason - they have three chambered heart.
D. (i) Presence of limbs.
==================================
3a.
B - pride of Barbados
C - flower of maize
3b.
B - insect
C - wind
3c. for B insert:
- they process scent
- nectar present
- have bright colour
For C
- Wind
- have dull colour
- Nectar absent
- Scent absent
3d. TABULATE: B AND C
UNDER B WRITE:
- Has petals
- has nectar
- it is heavy
UNDER C WRITE:
- no petals
- no water
- its is light
3E. Draw a well labeled pride of barbados
------------GOODLUCK------------
1.
i. Blackfly
ii. from the leaves to other parts of plant (upward/downward)
iii. - two parents are involved
- results information of new varieties
iv. (i) - labial palp
(ii) labium
v. artery
vi. because of the high pressure
vii. ciliary muscle alters the focal length
viii. hypothalamus
ix. (i) erythrocyte - transportation of the oxygen from the lungs to the body cell.
(ii) leukocyte - defend body against diseases
x. (i) drying
(ii) smoking
(iii) heating
(iv) freezing
xi. (a) Air - nitrogen oxide, co2 gas
(b) water - sewage, oil spillage
xii. secchi disc
xiii. meiosis
xiv. - has nodes and internides
- presence of creeps under the ground
xv. endolymph
==========================
5. i. graph drawing here
ii. morphological variation
iii - applies in crime detection
- in blood transfusion
=========================
2a. i. light blue precipitate
ii blue colouration
iii. l deep blue colouration
iv. deeply blue colouration
2b. diffusion
2c. - Respiration
- circulation
- excretion
2d. experiment to show the rate of diffusion using crystal
2e. not to alter the natural rate of diffusion.
===========================
4a.
D- cocoyam
E - Bean seed
F - Ginger
G - Onion bulb
H - Maize grain
4c. TABULATE. E - Bean Seed, H - Maize grain
UNDER E - Bean Seed WRITE:
- It is legume
- it is a dicotes
- has broad leaf
UNDER H - Maize Grain WRITE:
- it is a cereal
- it has a monocots
- has slender leaf
4c.
ai. T - tilapia fish
J - toad
aii. I - Aquatic habitat
T - both aquatic and terestial habitats
bi. TABULATE.
I - Tilapia fish and J – Toad
UNDER I - Tilapia Fish write:
1. scales present
2. Presence of fins
3. has tail
4. show parental care
UNDER J - Toad WRITE:
1. scales absent
2. presence of limbs
3. has no tail
4. do not show parental care
bii. - they are cold blooded animal
- both can leave in water
- both are oviparous animals
C.
I - prices: reason - they have two chambered heart.
J - amphibia: Reason - they have three chambered heart.
D. (i) Presence of limbs.
==================================
3a.
B - pride of Barbados
C - flower of maize
3b.
B - insect
C - wind
3c. for B insert:
- they process scent
- nectar present
- have bright colour
For C
- Wind
- have dull colour
- Nectar absent
- Scent absent
3d. TABULATE: B AND C
UNDER B WRITE:
- Has petals
- has nectar
- it is heavy
UNDER C WRITE:
- no petals
- no water
- its is light
3E. Draw a well labeled pride of barbados
------------GOODLUCK------------
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