Vascular Plants

by crashcourse

http://www.youtube.com/watch?v=h9oDTMXM7M8

 

 

Summary

     This video really explaisn why vascular plants have come to dominate the planet. It all has to do with the fact that vascular plants can move materials from one part of the plant to another, allowing them to grow bigger and spread farther. The video first specifies the three types of tissue, vascular tissue, ground tissue, and dermal tissue and explains what they do. It also talks about primary growth and secondary growth. Secondary growth is when the plant gets wider, not just taller, while in primary growth the plants just gets taller. It talks about how plants have three main organs, the roots, stem and leaves and explains each organ's function. All three organs have all three tissues that deal with water. Next, the video talks about how the plant deals with water, starting of with how water gets into the plants, through the epidermis. Plants get their water from root hairs in the roots. Then the water goes to the vascular tissue xylem. It talks about the different types of cells and their functions in plants. Now, water goes through the plant through the xylem and enters the leaf, specifically the mesophyll. Then the water goes into the ground tissue. Photosynthesis happens, the sugar made is transported to other parts of the plant through the second type of vascular tissue, the phloem. It concludes with talking about how AWESOME plants are!

 

Relevance

     This video is relevant to what we are studying because we are specificaly studying about the different types of tissue like the dermal, vascualar and ground tissue. We are also learning about how water is moved around in the plant, through transpiration and capillary action and such.