Chapter 22, Problem 12STP

Summary Introduction

To describe:the similarity and difference among annuals, biennials, and perennials.

Introduction:Vascular seed plants generate seeds. Each seed generally comprises a tiny sporophyte enclosed by protective tissue. The plants whose seeds are section of fruits are known as angiosperms. The plants whose seeds are not a section of fruits are known as gymnosperm.

Explanation of Solution

Annuals	Biennials	Perennials
The life spans of the annual plant are one year	The life spans of a biennial plant are two years	The life spans of perennial plants are several years.
During its life spans, it sprouts from a seed, grows, sets seed, and then dies.	In the first year, it germinates, produces leaves and root system, and in the second year, leaves, flowers get matured and develop seeds and die.	During its life span, it produces flowers and seeds yearly
Long bloom periods	Long bloom period	Shorter bloom period

All plant life spans are genetically determined and represent adaptations to withstand tough conditions. Therefore, all plant life spans are affected by environmental factors.