IGCSE Biology Paper-2: Specimen Questions with Answers 26 - 29 of 203
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Question 26
Question
MCQ▾Figure shows a structure of human eye. Which part is cornea?
Choices
| Choice (4) | |
|---|---|
a. | Part D |
b. | Part C |
c. | Part B |
d. | Part A |
Answer
d.Explanation
The cornea is the transparent front portion of the eye that protects the iris, pupil, and anterior chamber of eye. Cornea is a highly organized group of cells and proteins.
Question 27
Question
MCQ▾The diagram shows a structure of heart . Which part is pulmonary artery
Choices
| Choice (4) | |
|---|---|
a. | Part A |
b. | Part B |
c. | Part C |
d. | Part D |
Answer
c.Explanation
The pulmonary artery is the part of heart, which carries deoxygenated blood from the heart to the lungs.
Question 28
Question
MCQ▾What is the largest salivary gland?
Choices
| Choice (4) | |
|---|---|
a. | Brunner՚s gland |
b. | Liver |
c. | Parotids gland |
d. | Henley՚s gland |
Answer
c.Explanation
The parotid gland is a major salivary gland. In human beings, the two parotid glands occur under the mouth and in front of both ears.
Question 29
Question
MCQ▾Thymine in DNA is always paired with
Choices
| Choice (4) | |
|---|---|
a. | Adenine |
b. | Thymine |
c. | Guanine |
d. | Cytosine |
Answer
a.Explanation
Reason behind it is chemical structure of each base. Adenine and Thymine establish two hydrogen bonds between them. Guanine and Cytosine establish three hydrogen bonds between them. so A and T are always paired and G and C are always paired.