141.

Given below are some statements related to lower eumetazonas. Select the INCORRECT statement.

• Ctenphores are diploblastic with radial symmetry

• Placozonas, with weakly differentiated tissue layers, are not diploblasts

• Cnidarians are diploblastic with typically two stages in their life cycle.

• Hydrozonas, a Cnidarian class, often have colonial polyps in their life cycle

Based on the type of excretion of nitrogenous was, animals can be categorzied as ammonotelic, ureotelic and uricotelic. Given below are combinations of groups of organisms and type of excretion. Select the correct combination.

• Poriferans, adult amphibians,cartilaginous fishes are ammonotelic

• Ascaris, cockroaches, prawn are uricotelic

• Paramecium, amphibian tadpoles, crocodiles are mainly ammonotelic

• Humans, sharks and aquatic anurans are ureotelic 

Basal angiosperms are NOT represented by the members of:

• Chloranthales

• Nymphaeales

• Austrobaileyales

• Amborellales

Which of the following is the correct increasing order for the daily net primary productivity (NPP) per unit leaf area in different ecosystems?

• Deserts < Temperature forests < Tropical forests 

• Deserts < Tropical forests < Temperature forests

• Temperature forests < Tropical forests < Deserts 

•  Tropical forests < Temperature forests < Deserts 

The equilibrium model of island biogeography proposed by MacArthur and Wilson assumes that the number of species on an island represents a blance between

• Resource consumption rate and predation rate

• Birth rate and death rate

• Colonization rate and extinction rate

• Specitation rate and hybridization rate