define placentation with ther type
Answers
Answer:
In biology, placentation refers to the formation, type and structure, or arrangement of the placenta. The function of placentation is to transfer nutrients, respiratory gases, and water from maternal tissue to a growing embryo, and in some instances to remove waste from the embryo. Placentation is best known in live-bearing mammals (theria), but also occurs in some fish, reptiles, amphibians, a diversity of invertebrates, and flowering plants. In vertebrates, placentas have evolved more than 100 times independently, with the majority of these instances occurring in squamate reptiles
Explanation:
The arrangement of ovules within the ovary is known as placentation. The different types of placentation found in plants are: Basal placentation: The placenta is at the base (bottom) of the ovary and a single ovule is attached to it. ... The ovules develop on the inner wall of the ovary or on peripheral part.....