Completar Frases Animal reproduction gaps1Versión en línea Fill in the gaps with the given words. por Gabriel Pérez Comendador 1 female sperm sperm ova male fertilizes internal external body female copulation ova male sexually hermaphrodites water Most animals reproduce . Individuals can be either or . Males have testicles , which produce . Females have internal ovaries , which produce . In some animal species , an animal can be both and . They have both testicles and ovaries . These animals are called . There are two types of fertilization : and . Internal : During sexual union , or , the male deposits sperm inside the female's . External : It occurs in the . The females deposit the in the water and the male deposits . The sperm the ova .