Chapter 30, Problem 8TYU

(a)

Summary Introduction

To draw: A phylogeny of angiosperms, assuming that all the star anise relatives have four-celled female gametophytes and a diploid endosperm, as per the given data.

Concept introduction: Phylogenetics is the branch of science that deals with estimating and analyzing evolutionary relatedness among various groups of organisms. It is based on the morphological as well as nucleic acid similarity.

In phylogenetic studies, the most convenient way of visualizing evolutionary connection among a group of organisms is through phylogenetic trees, which is represented by line and nodes.

(b)

Summary Introduction

To discuss: The evolution of the female gametophyte and endosperm in angiosperms with reference to the phylogenetic tree as shown in Fig.1.

Concept introduction: Phylogenetics is the branch of science that deals with estimating and analyzing evolutionary relatedness among various groups of organisms. It is based on the morphological as well as nucleic acid similarity.