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Parthenogenesis and Tissue Culture
Parthenogenesis is a form of reproduction in which the ovum develops into a new individual without fertilisation. Natural parthenogenesis has been observed in many lower animals (it is characteristic of the rotifers), especially insects, e.g., the aphid. In many social insects, such as th..
Characteristics of Protochordates
) Feathers Hair Respiratory organs Gills Lungs Lungs Lungs Lungs Locomotor organs Fins Limbs Limbs Limbs Limbs Heart Two chambers Three chambers Three chambers Four chambers Four chambers Aortic arch On both sides On both the sides On both the sides Only on right side Only on left side Mode of ..
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