Multiple Choice QuestionsGiven 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
A.
Chloranthales
The basal angiosperms consists of three sequential cladogram branches, in what has been termed the ANITA grade of angiosperm evolution. These branches are: first, the Amborellales, second, the Nymphaeales, and third, the Austrobaileyales, based upon molecular phylogenies. Although molecular evidence places the Amborellales at the very base of the angiosperm clade, the oldest fossil flowers found thus far belong to the Nymphaeals, one branch up from the base of the clade.
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
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