leaves

• why are most leaves green?

  Chlorophyll
• what role do chlorophyll and other plant pigments play in leaves?

  Photosynthesis, chlorophyll absorbs the sunlight
• how do the thickness, shape, and size of leaves contribute to a plants survival?

  Thicker leaves reduce water loss, different shapes optimize light absorption, and larger size increases photosynthesis.
• what are different leaf attachments to the plant stem, and how are they made?

  petiole: stalk that connects the leaf to the stem, and the base of the petiole is called stipules. some leaves are directly attached and are called sessile leaves
• what is the function of the midrib in a leaf?

  Support and transport water, nutrients and sugars throughout the leaf
• Describe the venation patterns in monocots and dicots?


  Monocots: Parallel venation Dicots: Reticulate venation
• How do leaves adapt to different environmental conditions?

  Structural and physiological adaptations
• Why do small leaves lose less water compared to large leaves?

  because small leaves have less total surface area than large leaves
• In what type of environment are small, narrow leaves well adapted?

  Dry environments
• How do leaves adapt to low light and high water environments?

  Leaves in high water environments have adapted to low light and lots of water. Large leaves arranged horizontally absorb the most light possible. Because these plants have plenty of access to water, they can keep large leaves alive.