Plant Tissues, Organs And Systems
Bayani Gaba-gaba
A leaf is a few tenths of a millimetre thick and has to do three incompatible things at once: catch as much light as possible, let carbon dioxide in, and avoid drying out in the sun that provides the light. The way it is layered is the compromise, and every layer is there for a reason you can work out rather than memorise.
In this lesson you will name the plant tissues this course asks for, slice through a leaf and account for each layer, and learn where the xylem and phloem sit in a root and in a stem. That last detail is small, easily forgotten and reliably examined. Along the way you will meet the pores in the lower surface of a leaf, which the specimen paper hands to you in a question stem and then asks you to count.
Manufura
- Examples of plant tissues include: epidermal tissues, which cover the plant; palisade mesophyll, which carries out photosynthesis; spongy mesophyll, which has air spaces to facilitate diffusion of gases; xylem and phloem, which transport substances around the plant.
- Plant organs include stems, roots and leaves. Details of the internal structure of these organs are limited to the leaf and to the position of the xylem and phloem in a dicotyledonous primary root and primary stem.
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
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Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Plant Tissues, Organs And Systems. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which plant tissue carries out most of the photosynthesis in a leaf? A. Epidermal tissue B. Palisade mesophyll C. Spongy mesophyll D. Phloem Answer: B
- What is the function of the air spaces in the spongy mesophyll? A. To store water B. To strengthen the leaf C. To facilitate the diffusion of gases D. To absorb light Answer: C
- Which plant tissue covers the plant? A. Phloem B. Xylem C. Palisade mesophyll D. Epidermal tissue Answer: D
- Where are the xylem and phloem found in a dicotyledonous primary root? A. In a ring near the outside B. In the centre C. Just below the epidermis D. Scattered evenly throughout Answer: B
- Which of these is a plant organ? A. Palisade mesophyll B. Xylem C. A leaf D. A chloroplast Answer: C
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
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