Biology 1st Paper MCQ-Barishal Board-2023

1. In which stage of Meiosis centromere of each chromosome divides?

2. Boni has headache, pain in bone joint and vomiting tendency. The temperature rises quickly as high as 103°-105°F and rash appears on her body. Moni has headache, muscle pain and vomiting tendency. Every alternate 48 hours shivering fever occurs and later on temperature turns normal with sweating.

The pathogen of Moni's disease-

i. sexual reproduction occurs in mosquito

ii. destroys erythrocytes

iii. secrets pyrogen

Which one of the following is correct?

3. In C$_4$ plants-

i. photosynthesis rate is high

ii. photosynthesis occurs at high temperature

iii. grana is present in the chloroplasts of bundle sheath cells

Which one of the following is correct?

4. Who discovered Lysosomes?

5. W. Flemming (1882) observed organelle 'A' and named as fila. W. Schimper (1883) first observed organelle-'B' and coined its name.

What is the name of the first organelle of the stem?