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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.

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.

Biological Clocks and Seasonal Responses

Biological Clocks and Seasonal Responses

The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.

Plant Breeding and Biotechnology

Plant Breeding and Biotechnology

Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.

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.

Seedless Vascular Plants

Seedless Vascular Plants

Seedless Vascular Plants Were the First Tall Plants on Earth

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Related Experiment Video

Updated: Jul 24, 2025

Forced Flowering in Mandarin Trees under Phytotron Conditions

Forced Flowering in Mandarin Trees under Phytotron Conditions

Published on: March 6, 2019

Flowering Newsletter 2023.

Rainer Melzer^1,2

¹Flowering Newsletter Editor, JXB.

Journal of Experimental Botany

|July 7, 2023

Summary

This year's Flowering Newsletter focuses on fruits and seeds, bringing joy through diverse articles. Explore the fascinating world of plant reproduction and the origins of the word "fruit."

Area of Science:

Botany
Plant Science
Reproductive Biology

Background:

The newsletter explores the etymological roots of the word 'fruit,' tracing it back to Latin origins signifying enjoyment.
This year's edition highlights the significance of fruits and seeds in various botanical contexts.

Discussion:

Articles delve into the biological processes and ecological roles of fruits and seeds.
The content aims to foster an appreciation for plant reproductive strategies.

Key Insights:

Fruits and seeds are central to plant propagation and biodiversity.
Understanding plant reproduction enhances our knowledge of ecosystems.

Outlook:

Future research may uncover novel applications of fruit and seed biology.

Keywords:

Apomixis auxin carpel crops ethylene flowering time fruits seeds senescence sperm cells

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