Differentiate between the following (any one point):
$(a)$ Diploblastic and triploblastic animals
$(b)$ Warm-blooded and cold-blooded animals

(N/A) Diploblastic animals are those whose body is made up of two germinal layers (ectoderm and endoderm),whereas triploblastic animals have three germinal layers (ectoderm,mesoderm,and endoderm).
$(b)$ Warm-blooded animals (homeotherms) can maintain a constant internal body temperature regardless of the external environment,whereas cold-blooded animals (poikilotherms) change their body temperature according to the fluctuations in the environmental temperature.