Leaf Structure
Muhtasari
A leaf is a solar panel and a food factory rolled into one. Almost everything about its shape, from its broad flat blade to the microscopic pores on its underside, is an adaptation for one job: capturing light and raw materials to make food efficiently.
In this lesson you will learn why leaves are broad and thin, identify every part of a dicotyledonous leaf in section, and explain how each part (from the waxy cuticle to the packed palisade cells and the gas-exchanging stomata) is suited to photosynthesis.
Malengo
- State that most leaves have a large surface area and are thin, and explain how these features are adaptations for photosynthesis
- Identify in diagrams and images the following structures in the leaf of a dicotyledonous plant: chloroplasts, cuticle, guard cells and stomata, upper and lower epidermis, palisade mesophyll, spongy mesophyll, air spaces, vascular bundles, xylem and phloem
- Explain how the structures listed in
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Hongera kwa kukamilisha somo la Leaf Structure. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
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- The main site of photosynthesis in a leaf is the: A. lower epidermis B. palisade mesophyll C. cuticle D. xylem Answer: B
- The function of the waxy cuticle is to: A. carry out photosynthesis B. reduce water loss C. absorb water D. transport sugar Answer: B
- Carbon dioxide enters the leaf mainly through the: A. xylem B. cuticle C. stomata D. phloem Answer: C
- Which tissue carries water to the leaf cells? A. phloem B. xylem C. cuticle D. epidermis Answer: B
- Air spaces in the spongy mesophyll allow: A. light absorption B. gases to diffuse to and from the cells C. water storage D. sugar transport Answer: B
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Vitabu Vinavyopendekezwa
Jifunze zaidi kutoka vyanzo huria
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Sehemu ya kitabu
Leaves
Identify the parts of a typical leaf
"Biology: Leaves" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/30-4-leaves. Access for free at https://openstax.org/books/biology/pages/1-introduction
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