Biology 2015 | Study Mode

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Question 61
A
Amnion
B
Chorion
C
Umbilical Cord
D
Placenta
Explanation
Option D is correct. This is because, placenta establishes an intimate connection between the embryo and the mother. This connects the placenta to transfer food,water and oxygen from mother to the embryo or foetus

Correct option: D
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Question 62
A
Cochlea
B
Conjunctiva
C
Cornea
D
Iris
Explanation
Option A is the correct answer. This is because, cochlea is the structure of the mammalian hearing organ called ear.

Correct option: A
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Question 63
A
renal vein
B
hepatic portal vein
C
pulmonary artery
D
pulmonary vein
Explanation
Option C is correct. This is because for deoxygenated blood (blood containing carbon (iv) oxide) in the heart to be returned back to the lungs for the removal of the CO2,pulmonary artery aids in the process.

Correct option: C
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Question 64
A
cell
B
tissues
C
organ
D
system
Explanation
Option A is correct. This is because, cell is the basic functional and structural unit of life.

Correct option: A
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Question 65
A
mango
B
oil palm
C
orange
D
pineapple
Explanation
Options A, B and C are not correct. This is because, they are all true fruits (i.e, the fruits that develops solely from a fertilized ovary.
Option D is correct. This is because, pineapple is a false fruit (a fruit developed or formed from the ovary and other floral parts of the plant or fruit flowers.

Correct option: D
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Question 66
A
butterfly
B
housefly
C
mosquito
D
tsetse fly
Explanation
Option D is correct. This is because, tsetse fly is the vector that transmits trypanosome that causes trypanosomiasis or sleeping sickness.

Correct option: D
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Question 67
A
adrenal
B
pancreatic
C
parathyroid
D
salivary
Explanation
Option D is correct. This is because, salivary glands are found in the mouth, which secretes a juice called saliva that contains an enzyme called ptyalin.

Correct option: D
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Question 68
A
erythrocytes
B
leucocytes
C
lymphocytes
D
phagocytes
Explanation
Option B is correct. This is because, leucocytes is another name for white blood cells

Correct option: B
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Question 69
A
assimilation
B
egestion
C
elimination
D
excretion
Explanation
Option B is correct. This is because, the removal of the remnant particles of digestion called faeces is done through a process called egestion.

Correct option: B
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Question 70
A
oesophagus
B
large intestine
C
mouth
D
stomach
Explanation
Options A and B are not correct.
Option C is correct. This is because, the mouth is the location where enzyme ptyalin acts on starchy food.
Option D is wrong. This is because, stomach is location for the action of renin and pepsin enzymes.

Correct option: C

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