Alexander Von Humboldt described for the first time Option 1 : Population growth equationOption 2 : Laws of limiting factorOption 3 : Species area relationshipsOption 4 : Ecological biodiversity

Which of the following statements is correct? Option 1 : The descending limb of loop of Henle is impermeable to water.Option 2 : The ascending limb of loop of Henle is permeable to water.Option 3 : The descending limb of loop of Henle is permeable to electrolytes.Option 4 : The ascending limb ...

Asymptote in a logistic growth curve is obtained when Option 1 : K > NOption 2 : K = N000000000000000000000000Option 3 : The value of ‘r’ approaches zeroOption 4 : K < N

Which ecosystem has the maximum biomass? Option 1 : Pond ecosystemOption 2 : Grassland ecosystemOption 3 : Forest ecosystemOption 4 : Lake ecosystem

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration because of Option 1 : Residual volumeOption 2 : Tidal volumeOption 3 : Expiratory reserve volumeOption 4 : Inspiratory reserve volume

Life cycle of ectocarpus and fucus respectively are Option 1 : Haplontic, DiplonticOption 2 : Diplontic, HaplodiplonticOption 3 : Haplodiplontic, DiplonticOption 4 : Haplodiplontic, Haplontic

Select the correct route for the passage of sperms in male frogs. Option 1 : Testes - Vasa efferentia - Bidder’s canal Ureter - CloacaOption 2 : Testes - Vasa efferentia - Kidney - Seminal Vesicle - Urinogenital duct - CloacaOption 3 : Testes-Vasa efferentia - Kidney - Bidder’s canal ...

With reference to factors affecting the rate of photosynthesis, which of the following state- ments is not correct? Option 1 : Increasing atmospheric CO2 concentration up to 0.05 per cent can enhance CO2 fixation rate.Option 2 : C3 plants respond to higher temperatures with enhanced ...

Plants which produce characteristic pneumatophores and show vivipary belong to Option 1 : MesophytesOption 2 : PsammophytesOption 3 : HalophytesOption 4 : Hydrophytes

A disease caused by an autosomal primary non-disjunction is Option 1 : Klinefelter’s syndromeOption 2 : Down’s syndromeOption 3 : Turner’s syndromeOption 4 : Sickle cell Anaemia