Biology 2nd Paper MCQ-Rajshahi Board-2022

1. After how many weeks does the human embrio first start secretion surfactant?

2. The causes of synusitis-

i. tooth infection

ii. cystic fibrosis

iii. if the nose bone is curved

Which one is correct?

3. The age limit of fingerling is-

4. Non straited muscle is found-

5. During walking by the pond Mr. Rafiq said to his son showing snail, "There is one more animal with shell living in the pond in which body pearl is created."

The phylum of the animal shown in the stimuli is-