Biology 2nd Paper MCQ-Mymensingh Board-2023

1. What is the phenotypic ratio of F$_2$ generation according to the stem?

2. Which one is the bone of cranium?

3. Trachea→ P→Q→ Alveolar duct →

According to the stimulus the characteristics of the functional unit of the organ are-

i. bubble-like air sacs exchange gases

ii. microphage destroy microorganisms

iii. septal cells secrete phospholipids

Which one is correct?

4. Which part of the bronchus enters the lung?

5. Bulbus arteriosus is-

i. the inflated portion of the ventral aorta

ii. located at the base of the pericardial cavity

iii. regulates blood flow to the ventral aorta

Which one is correct?