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Correct Answer: B) Annelida.
Correct Answer: D) Gradualisim.
Correct Answer: C) Round worm.
Correct Answer: A) Archaebacteria and Eubacteria.
Correct Answer: B) Unicellular.
Correct Answer: D) Vent.
Correct Answer: A) Monotremes.
Correct Answer: D) Blue whale.
Correct Answer: A) Oparin.
Correct Answer: C) Vivipary.
Correct Answer: B) Pisciculture.
Correct Answer: A) Ray finned fish.
Correct Answer: B) Castor.
Correct Answer: B) B Yellow.
Correct Answer: B) They are fused together.
Correct Answer: D) Housefly, dragonfly, butterfly.
Correct Answer: B) Amoeba.
Correct Answer: C) Respiration.
Correct Answer: D) Hyoid apparatus.
Correct Answer: C) Chordata.
Correct Answer: B) Reptile.
Correct Answer: C) 4.5-4.6 billion years.
Correct Answer: B) Compound eye.
Correct Answer: B) Skin.
Correct Answer: A) Mesoglea.