Question

Define with one example for each: (a)Axile placentation (b)Urochordates.

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Answer 1

Answer:

(a)Axile placentation In axile placentation, the ovary is sectioned by radial spokes with placentas in separate locules. Ovules are arranged along the central axis of placenta. Number of chambers correspond to the number of carpels. It is found in bi or multicarpellary and multilocular ovaries. Examples include China rose, lemon, cotton and tomato.

(b)Urochordates a subphylum or other division of Chordata comprising the tunicates and including the classes Ascidiacea, Thaliacea, and Larvacea A group of chordate animals are urochordata,Examples:- Sea Pork,Golden Star Tunicate, Sea Peach,Ciona Intestinalis etc.