Which of the following is absent in polluted water : -

Hydrilla

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Water hyacinth

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Larva of stone fly

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Blue green algae

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Larva of stone fly
Stoneflies are exopterygote insects with aquatic nymphs; long antennae, biting mouthparts and a weak flight. Adults have the tendency to feed on lichens and unicellular algae. These are good pollution indicators. Stonefly (Plecoptera order) larva requires well-aerated, non-polluted water. It is absent in polluted water.

So, the correct answer is 'Larva of stonefly'.

Suggest Corrections

Similar questions

Question 32
Well defined nucleus is absent in

(a) blue green algae
(b) diatoms
(c) algae
(d) yeast

Join BYJU'S Learning Program