Mosquito larvae and pupae come to the water surface to breathe. Larvae have a siphon tube to extract oxygen from the air, while pupae need to reach the surface to allow adult mosquitoes to emerge and fly away.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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Your mother sprays kerosene oil on stagnant water to prevent mosquito breeding. Kerosene creates a thin film on the water surface, which interferes with mosquito larvae breathing, thereby reducing their chances of growing into adult mosquitoes and spreading diseases.
To decide which stage follows the egg, observe the life cycle of the specific insect. For many insects, the larva stage comes immediately after the egg, while the pupa stage follows the larva.
It can be surprising to imagine a mosquito emerging from a pupa, given the drastic differences. The pupa is an inactive, cocoon-like stage, while the adult mosquito has wings and distinct features for flying.
The Khadi and Village Industries Commission (KVIC) was established to promote and develop khadi and village industries in India. It aims to enhance rural employment, support traditional crafts, and improve economic conditions in rural areas.