Leaf Structure

Science
Tutor: None Selected Time limit: 1 Day

1. Describe the adaptations of the lower epidermis of the leaf to carry out photosynthesis.

2. What are the two kinds of cell in the lower epidermis, and what are their functions?

Feb 14th, 2015

Leaves have many structures that prevent water loss, transport compounds, aid in gas exchange, and protect the plant as a whole.

LEARNING OBJECTIVE 

  • Describe the internal structure and function of a leaf


KEY POINTS 

  • The epidermis consists of the upper and lower epidermis; it aids in the regulation of gas exchange via stomata.

  • The epidermis is one layer thick, but may have more layers to prevent transpiration.

  • The cuticle is located outside the epidermis and protects against water loss; trichomes discourage predation.

  • The mesophyll is found between the upper and lower epidermis; it aids in gas exchange and photosynthesis via chloroplasts.

  • The xylem transports water and minerals to the leaves; the phloem transports the photosynthetic products to the other parts of the plant.

  • Plants in cold climates have needle-like leaves that are reduced in size; plants in hot climates have succulent leaves that help to conserve water.

TERMS

  • mesophyll

    parenchyma (ground tissue) that comprises most of the interior of the leaf between the upper and lower layers of epidermis

  • cuticle

    a noncellular protective covering outside the epidermis of many invertebrates and plants

  • trichome

    a hair- or scale-like extension of the epidermis of a plant



Feb 14th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Feb 14th, 2015
...
Feb 14th, 2015
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer