Consider the following statements: 1. The adult human lungs have an internal area which is 40 times the external surface of the body. 2. Male mosquitoes lack the blood sucking mouth parts. 3. Now adays, viruses are cultured in an artificial medium also. 4

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Q: 45 (IES/2002)
Consider the following statements:
1. The adult human lungs have an internal area which is 40 times the external surface of the body.
2. Male mosquitoes lack the blood sucking mouth parts.
3. Now adays, viruses are cultured in an artificial medium also.
4. Duck eats only vegetarian food.
Which of these statements are correct ?

question_subject: 

Science

question_exam: 

IES

stats: 

0,54,37,54,11,9,17

keywords: 

{'male mosquitoes': [2, 0, 0, 0], 'mouth parts': [0, 0, 1, 0], 'human lungs': [0, 0, 1, 0], 'internal area': [0, 0, 1, 0], 'viruses': [2, 0, 0, 4], 'body': [27, 3, 23, 37], 'duck': [2, 0, 2, 0], 'blood': [5, 0, 0, 1], 'vegetarian food': [0, 0, 1, 0]}

Option 1 is correct. The statement that the adult human lungs have an internal area which is 40 times the external surface of the body is true. This large internal surface area of the lungs allows for efficient exchange of oxygen and carbon dioxide during respiration.

Option 2 is incorrect. Male mosquitoes actually do have blood-sucking mouthparts. Both male and female mosquitoes feed on plant nectar for nourishment, but only female mosquitoes require a blood meal for successful reproduction.

Option 3 is incorrect. Nowadays, viruses are primarily cultured in living host cells rather than an artificial medium. This is because viruses require a host to replicate and reproduce.

Option 4 is incorrect. Ducks are omnivorous birds, which means they eat a variety of foods including both plant matter and animal matter. While some ducks may predominantly consume vegetarian food, they also eat insects, small fish, and other small animals.

Therefore, only option 1 is correct.