Which of the following when added to pond water will accelerate the rate of metamorphosis in tadpoles:
A.Chlorine
B.Broming
C.Iodine
D.Flourine
A.Chlorine
B.Broming
C.Iodine
D.Flourine
A.Skin
B.Lungs
C.Gills
D.Skin and lungs both
A.1/3rd in length
B.2/3rd in length
C.3/4 in length
D.1/2 in length
A.Tail of the tadpole is formed
B.Mesodermal and endodermal parts of the phyaryngeal region are derived
C.Notochord is derived
D.None of these
A.Kidneys
B.Urinary bladder
C.Both (a) & (b)
D.None of these
A.It occurs in all body cells
B.It occurs only in zygote
C.It results into haploid cells only
D.It results into unidentical cells
A.First cleavage division
B.Second cleavage division
C.Fourth cleavage division
D.Fifth cleavage division
A.Dorsal side
B.Head end
C.Tail end
D.Ventral side
A.Cyclostomes, fishes and amphibians
B.Reptiles, birds and mammals
C.Both of the groups in (a) & (b)
D.None of these
A.Ectoderm only
B.Endoderm only
C.Mesoderm only
D.None of these