Fill in the Blanks Animal reproduction gaps6Online version Fill in the gaps with the appropriate word. by Gabriel Pérez Comendador 1 ovaries internal sperm female female testicles External sexually sperm sperm ova ova male male Most animals reproduce . Individuals can be both or . Males have which produce . Females have internal which produce . Fertilization can be and external . fertilization occurs in the water . The deposits the ova in the water and , the deposits the . The fertilizes the .