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GUIDED BY: M.NIRMALA. DONE BY:U.SABARISH. N.T.KISHORE KUMAR. B.SATISH KUMAR. V.PAVAN KUMAR. T.JAYA KUMAR.
BRYOPHYTA The Bryophyta can be considered to be the precursors of the terrestrial plants.In this chapter you are going to study the example- polytrichum.
EXTERNAL STRUCTURE (MORPHOLOGY) The structure of the plant body is divided into an with small leaves.The young leaves are spirally arranged in three rows at the tip of the stem.
REPRODUCTION. Polytrichum undergoes vegetative and sexual reproduction.vegetative reproduction takes place by various ways by primary protonema as well as by the formation of gemmae.
The male gamete is chemotacally attracted by the mucilaginous sap at the mouth of the archegonium. The fertilized egg forms the diploid zygote. FERTILIZATION FERTILIZATION
CONCEPTS. After fertlisation the diploid zygote produces the sporophyte. Polytrichum is dioecious. The male sex organ is called the antheridium and the female sex organ is called the archegonium.
SPOROPHYTE AND CAPSULE The upper part elongates into a slender ‘seta’ that bears the capsule at the tip. The central region of the capsule is formed of elongated cells called columella.
Dispersal of the spore The peristome has 32 to 64 teeth. There is a ring of pores in between these teeth –like structures. The spores are liberated out through these pores by the action of the wind.
On falling onto a suitable substratum the Spores germinate into a new plant. Usually In the life cycle of polytrichum, the sporophyte is totally dependent on the gametophyte.
Chapter 13 Meiosis And Sexual Life Cycle. An Introduction to Heredity Heredity: the transition of traits from one generation to the next Along w/ similarities,
Fern Life Cycle Alternation of generations Defined: Plants alternate between a diploid organism and a haploid organism.
What makes a Plant a Plant? Plant Characteristics How are Plants Classified.
PLANTS Non-vascular plants: mosses and their relatives (BYROPHYTES) Seedless vascular plants: ferns and their relatives (PTERIDOPHYTES) Seed plants: cone-bearing.
Chapter 38 Plant Reproduction and Development. Reproduction and Development Alternation of Generations Angiosperms and other plants exhibit alternation.
Notes E 4.3 Meiosis is a special form of cell division.
CHAPTER 29 PLANT DIVERSITY I: HOW PLANTS COLONIZED LAND Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section A: An Overview.
Kingdom: Plantae (Phylogeny, Evolution, Alternation of Generations) earliest plants evolved from algal ancestors 0.5 BYA converted bare rock into soil.
Plant Growth and Reproduction Chapter 2, Lesson 7.
Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece.
THE PLANT KINGDOM. 7 Basic needs of plants: * temperature *light *water *air *nutrients *time *room to grow.
Asexual Reproduction Asexual reproduction involves only one parent who passes on the genetic information to their offspring. This sharing of genetic information.
Reproduction in Plants Asexual and Sexual Reproduction Objectives: *Define sexual and asexual reproduction **Describe binary fission in bacteria, spore.
SYSTEMS IN PLANTS Plants are multicellular organisms with two obvious distinguishing features: –They are usually green –They cannot move from place to.
Meiosis and Sexual Reproduction Chapter Meiosis In some organisms haploid gametes join to form a diploid zygote In some organisms haploid gametes.
Meiosis Chapter 13. Octopus Sex Male reaches under his mantle with tentacle, removes packet of sperm, and insert it into females egg chamber Eggs are.
Life Cycle of An Angiosperm 80 INPUT. 1.Tree/Plant produces beautiful, attractive flower. (Sporophyte generation) 2.Flower which contains the gametes.
Meiosis Chapter 8 Part II. Octopus Sex Male reaches under his mantle with tentacle, removes packet of sperm, and insert it into females egg chamber Male.
Plants and the Colonization of Land AP Biology – Chapter 29.
Study Guide BIOLOGY GENETIC I. Central Idea 1: Living systems reflect a hierarchy of levels of organization. This is described in the following flow chart:
CHAPTER 8 SECTION 2 PLANTS WITHOUT SEEDS. NONVASCULAR PLANTS Three major groups of nonvascular plants Three major groups of nonvascular plants Mosses.
Introduction to Plant Reproduction Introduction to AgriScience and Technology GHS Mr. Ham.
Types of Reproduction. Types of Reproduction Asexual Asexual reproduction occurs when a new organism is produced from one parent. The genetic material.
Kingdom Plantae. All plants are eukaryotic autotrophs making food from sunlight through photosynthesis. All plants are eukaryotic autotrophs making food.
Chapter 13 Meiosis and Sexual Life Cycles. Inheritance/Heredity When traits are passed down from one generation to the next, we say they are inherited.
Meiosis and Reproduction. Types of Reproduction Asexual Reproduction – production of offspring that requires only one parent; all the genetic materials.
Introduction to Plants Mrs. M. Rightler. Earliest Plants Algae Phytoplankton Lived in the sea.
Chapter 38 Plant Reproduction and Biotechnology.
Write everything that is underlined Section 6-1 Chromosomes & Meiosis Section 6-1 Chromosomes & Meiosis.
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