In most mammals, embryos gain nutrients through a placenta. Embryos develop inside a parent's body, but do not receive nutrients from the parent. Embryos develop in eggs that are laid, often in clutches or nests. Eggs hatch either inside or outside the body of the parent, depending on the species. In some insect species, embryos receive nutrients that are secreted in the reproductive tract. Examples include birds and most reptiles. Ovoviviparous Species Viviparous Species Oviparous Species

In most mammals, embryos gain nutrients through a placenta. Embryos develop inside a parent's body, but do not receive nutrients from the parent. Embryos develop in eggs that are laid, often in clutches or nests. Eggs hatch either inside or outside the body of the parent, depending on the species. In some insect species, embryos receive nutrients that are secreted in the reproductive tract. Examples include birds and most reptiles. Ovoviviparous Species Viviparous Species Oviparous Species

Aquaculture Science

3rd Edition

ISBN:9781133558347

Author:Parker

Publisher:Parker

Chapter2: Aquatic Plants And Animals

Section: Chapter Questions

Problem 4KA

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