Yes, only female mosquitoes drink blood. This is because they need the protein and iron found in blood to help develop their eggs. Male mosquitoes, on the other hand, feed on plant nectar and fruit juices.
The act of drinking blood is crucial for female mosquitoes to reproduce successfully. While they can survive on nectar alone, the protein in blood is essential for their eggs to mature.
This feeding behavior is why female mosquitoes are often considered a nuisance and a threat to human health. They can transmit deadly diseases like dengue fever and malaria while feeding on blood.