Angiosperms

5,032 views

Published on

angiosperms -the flowering plant

Published in: Spiritual, Technology, Business
0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
5,032
On SlideShare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
174
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

Angiosperms

  1. 1. Angiosperms The flowering plants
  2. 2. What are Angiosperms??? <ul><li>The  flowering plants  ( angiosperms ), also known as  Angiospermae  or  Magnoliophyta , are the most diverse group of land plants. Angiosperms are seed-producing plants . </li></ul>
  3. 3. Parts Of Angiosperms <ul><li>The parts of an Angiosperm include: </li></ul><ul><li>Roots , which are generally underground and serve to absorb water and nutrients </li></ul><ul><li>Stems , which come in various types such as: </li></ul><ul><ul><li>stolon, an above-ground “runner” </li></ul></ul><ul><ul><li>rhizome, an underground “runner” </li></ul></ul><ul><ul><li>bulb, a fleshy stem modified for nutrient storage </li></ul></ul><ul><li>Leaves , which can be either  simple  or  compound  in form and which  alternate  with each other going up the stem or can be arranged  opposite  each other on the stem or as  whorled  leaves where more than two originate from the same place on the stem </li></ul>
  4. 4. Characteristics Of Angiosperms <ul><li>Despite their diversity, angiosperms are clearly united by a suite of synapomorphies (i.e., shared, derived features) including: </li></ul><ul><li>1) ovules that are enclosed within a carpel, that is, a structure that is made up of an ovary, which encloses the ovules, and the stigma, a structure where pollen germination takes place, </li></ul><ul><li>2) double fertilization, which leads to the formation of an endosperm (a nutritive tissue within the seed that feeds the developing plant embryo), </li></ul><ul><li>3) stamens with two pairs of pollen sacs, </li></ul><ul><li>4) features of gametophyte structure and development, and </li></ul><ul><li>5) phloem tissue composed of sieve tubes and companion cells  </li></ul>
  5. 5. Angiosperm Life Cycle
  6. 6. Cotyledons <ul><li>Plant embryos in seeds have structures called cotyledons. Cotyledons are called ‘seed leaves’ because in many instances they emerge and become green when the seed germinates. </li></ul>
  7. 7. Division Of Angiosperms <ul><li>The angiosperms are divided into two groups on the basis of the number of cotyledons present in the seed . </li></ul><ul><li>Plants with seeds having a single cotyledon are called monocotyledonous or monocots </li></ul><ul><li>Plants with seed having two cotyledons are called dicots. </li></ul>
  8. 10. MADE BY: ANUJ SETIA AAKASH AHUJA

×