Assertion : Trygon is a poikilothermic animal. Reason : Body temperature of Trygon changes with change in ambient temperature.
Correct!
Wrong!
Assertion : Tapeworms exhibit true segmentation. Reason : Segments of tapeworms are of embryonic origin.
Correct!
Wrong!
Assertion : Honeybees show holometabolous development. Reason : A larva of honeybee differs from adult in form, structure and mode of life.
Correct!
Wrong!
Assertion : Metamerism is the characteristic feature of annelida. Reason : Annelids are diploblastic, segmented and coelomate animals.
Correct!
Wrong!
Assertion : Gills of chordates differ from the gills of non-chordates. Reason : Gills of chordates occur in pharyngeal gill slits which are absent in non-chordates.
Correct!
Wrong!
Assertion : Direct development is present in Hydra. Reason : In direct development, the young ones do not resemble the adults.
Correct!
Wrong!
Assertion : In ctenophores, locomotion takes place through comb plates. Reason : Comb plates are comb-like ciliary plates present on the body of ctenophores.
Correct!
Wrong!
Assertion : Physalia exhibits division of labour. Reason : Physalia have different zooids for nutrition, reproduction and defence.
Correct!
Wrong!
Assertion : Platyhelminthes and molluscs are diploblastic animals. Reason : In diploblastic animals, an undifferentiated layer called mesoderm is present between the ectoderm and endoderm.
Correct!
Wrong!
Assertion : Phylum Arthropoda is the largest phylum of Kingdom Animalia. Reason : Arthropods possess thick chitinous exoskeleton and jointed appendages.
Correct!
Wrong!
