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Morphogenesis

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.

Pollination and Flower Structure

Pollination and Flower Structure

Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.

Fruit Development, Structure, and Function

Fruit Development, Structure, and Function

Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.

Meristems and Plant Growth

Meristems and Plant Growth

Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.

The Angiosperm Life Cycle

The Angiosperm Life Cycle

Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.

Seed Structure and Early Development of the Sporophyte

Seed Structure and Early Development of the Sporophyte

Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.

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Related Experiment Video

Updated: May 4, 2026

Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques

Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques

Published on: April 12, 2018

Flower development: open questions and future directions.

Frank Wellmer¹, John L Bowman, Brendan Davies

¹Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland, wellmerf@tcd.ie.

Methods in Molecular Biology (Clifton, N.J.)

|January 8, 2014

Summary

This summary is machine-generated.

Flower development research has identified key genes, but many questions remain about floral meristem and organ control. This chapter explores open questions and experimental strategies for understanding flower evolution and diversity.

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Last Updated: May 4, 2026

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Area of Science:

Developmental Biology
Evolutionary Biology
Genetics

Background:

Decades of genetic and molecular research have illuminated flower development processes and identified key regulatory genes.
Despite significant progress, fundamental questions persist regarding the control of flower development across diverse angiosperm species.

Purpose of the Study:

To discuss unresolved questions in floral development, focusing on floral meristem patterning, organ specification, and evolutionary changes.
To outline experimental strategies for addressing these open questions in floral biology.

Main Methods:

Review of genetic and molecular analyses in flower development.
Focus on experimental strategies for investigating floral meristem development and patterning.
Examination of molecular mechanisms driving evolutionary changes in flower architecture.

Main Results:

Identification of numerous key regulatory genes controlling flower development processes.
Detailed insights into floral meristem development and patterning.
Understanding of molecular mechanisms behind evolutionary variations in flower size and architecture.

Conclusions:

Significant progress has been made in understanding flower development through genetic and molecular studies.
Further research is needed to address remaining questions on floral control and evolution.
Experimental strategies are proposed to advance the study of floral meristem, organ development, and evolutionary diversification.