S 24 -Advances in reproduction

S 24 -Advances in reproduction - Gymnosperm vascular tissue...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
10/30/2009 1 The quina-quina tree and Quinine: the cure for Malaria Cinchona succirubra In the 17 th Century, Europeans in Peru learned that the bark of tropical tree Cinchona (in the angiosperm family Rubiaceae), could be used to cure malaria. (One begins to comprehend the importance of preserving rain forests.) Fact of the day Malaria is a disease transmitted by the Anopheles mosquito, caused by minute parasitic protozoa called Plasmodium , which infect human and insect hosts alternatively. Fact of the day How to meet the challenge of the land Resist drying out/excess radiation Support mass against gravity Get and Transport nutrients/H2O to where needed Reproduce (a lot needed here)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Gymnosperm vascular tissue = Tracheid Tubular transport cells in vascular plants Lignification also provides structural support (2N) (N) 10/30/2009 2 (N) (2N) (N) (2N) (2N) Moss 10/30/2009 3 Fern Cones = 1 example 10/30/2009 4 Male Female Male Cycad female cone 10/30/2009 5 Ginkgo biloba : bilobed leaves Fertilization of the egg may not occur unit after the ovules have been shed The decaying tissue around the seed smells strongly rancid Still the seed is a delicacy and is used in herbal medicine Trees are quite resistant to smog, and are planted in many cities 10/30/2009 6 = Angiosperms The development of the FRUIT 10/30/2009 7...
View Full Document

Page1 / 7

S 24 -Advances in reproduction - Gymnosperm vascular tissue...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online