In which one of the following, the BOD (Biochemical Oxygen Demand) of Sewage (S), Distillery Effluent (DE), Paper mill Effluent ( PE) and Sugar mill Effluent (SE) have been arranged in ascending order ?
SE< S < PE < DE
SE < PE < S < DE
PE < S < SE < DE
S < DE < PE < SE
Bamboo plant is growing in a far forest then what will be the trophic level of it ?
First trophic level ( T1 )
Second tropic level ( T2 )
Third trophic level ( T3 )
Fourth trophic level ( T4 )
What is the intensity of sound in normal conversation ?
10-20dB
30-60dB
70-90dB
120-150dB
In which one of the following pair is the specific characteristic of soil NOT correctly matched ?
Laterite - Contains aluminium compound
Terra rossa - Most suitable for roses
Chernozems - Richest soil in the world
Black soil - Rich in calcium carbonate
The maximum biomagnification would be in which of the following in case of aquatic ecosystem ?
Fishes
phytoplanktons
Birds
Zooplankton
The correct sequence of plants in a hydrosere is:
Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox
Volvox→ Hydrilla → Pistia → Scirpus → Lantana → Oak
Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
Choose the correct match Bladderwort ,sundew ,venus fly trap
Nepenthes ,Dionea , Drosera
Nepenthes , Utricularia , Vanda
Utricularia , Drosera , Dionea
Dionea , Trapa , Vanda
Which one of the following is NOT observed in biodiversity hotspots?
Endemism
Accelerated species loss
Lesser interspecific competition
Species richness
There is no life on moon due to absence of
O2
water
light
temperature
An ecosystem which can be easily damaged, but can recover after some time if damaging effect stops, will be having:
Low stability and high resilience
High stability and low resilience
Low stability and low resilience
High stability and high resilience
