Question
Biology Question on Transport of water and minerals in plants
Which of the following is absent in polluted water
A
Hydrilla
B
Water hyacinth
C
Larva of stone fly
D
Blue green
Answer
Larva of stone fly
Explanation
Solution
The correct option is (c) : Larva of stone fly
Exopterygote stoneflies have large antennae, biting mouthparts, aquatic nymphs, and a shaky flying. Lichens and algae with one cell tend to be the primary sources of food for adults. These are reliable markers of pollution. The larva of stoneflies (Plecoptera order) require clean, well-aerated water. Polluted water lacks it.