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Question 1
A
similar cells 
B
tissues 
C
systems 
D
related organs 
Explanation.

No official Explanation yet!


Correct Option:
A

Question 2
A
biomes 
B
biosphere 
C
community 
D
ecology 
Explanation.
Option A is wrong. This is because, a biome is a regional or global land area that is characterized by the plants, animals and climate in that area
Option B is wrong. This is because, biosphere is the part of the earth that supports life.
Option C is correct. This is because, community consists of different organisms living together in a habitat.
Option D is wrong. This is because ecology is the study of organisms and their environment.

Correct Option:
C

Question 3
A
skeleton 
B
skull 
C
head 
D
spinal column 
Explanation.

No official Explanation yet!


Correct Option:
B

Question 4
A
Liver 
B
Lung 
C
Kidney 
D
skin 
Explanation.
Lungs: Remove carbon dioxide
Skin: Sweat glands remove water, salts, and other wastes
Large intestine: Removes solid waste and some water in the form of feces
Kidneys: Remove urea, salts, and excess water from the blood

Correct Option:
C

Question 5
A
mouth 
B
nostrils 
C
ribs 
D
diaphragm 
Explanation.
The act of breathing has two stages inhalation and exhalation

- Inhalation the intake of air into the lungs through expansion of chest volume.

- Exhalation the expulsion of air from the lungs through contraction of chest volume.

Inhalation and exhalation involves muscles:

- Rib muscles = the muscles between the ribs in the chest.
- Diaphragm muscle

Correct Option:
A

Question 6
A
capture and re-capture method 
B
complete census 
C
Transect method 
D
systematic sampling 
Explanation.

No official Explanation yet!


Correct Option:
D

Question 7
A
ecosystem 
B
habitat 
C
population 
D
species 
Explanation.

No official Explanation yet!


Correct Option:
D

Question 8
A
Choroid 
B
Sclerotic layer 
C
retina 
D
cones 
Explanation.
Cone cells, or cones, are one of two types of photo-receptor cells in the retina of the eye. They are responsible for color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light. Cone cells are densely packed in the fovea centralis, a 0.3 mm diameter rod-free area with very thin, densely packed cones which quickly reduce in number towards the periphery of the retina. There are about six to seven million cones in a human eye and are most concentrated towards the macula

Correct Option:
D

Question 9
A
class 
B
amphibian 
C
aves pisces 
D
reptilia 
Explanation.

No official Explanation yet!


Correct Option:
C

Question 10
A
Gonorrhea 
B
Herpes 
C
Influenza 
D
Syphilis 
Explanation.

No official Explanation yet!


Correct Option:
C

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