HORTICULTURE SCIENCE
ULTRA STRUCTURE OF PLANT CELLS AND ORGANS
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 Question 
 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
 
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  Blade 
 
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  Vein 
 
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  Petiole 
 
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 None of the above
 
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Detailed explanation-1: -The leaf blade: It is also called the lamina. It’s generally broad and flat. It is in this layer that photosynthesis occurs. It contains a prominent midrib at the center of the leaf blade which is the main vein.
Detailed explanation-2: -Parts of a Leaf: • Blade: consists of the apex, margin, veins, midrib, and base. It is the large, flat part of the leaf where photosynthesis occurs.
Detailed explanation-3: -The petiole is a stalk that supports the leaf blade.
Detailed explanation-4: -…a broad expanded blade (the lamina), attached to the plant stem by a stalklike petiole. In angiosperms leaves commonly have a pair of structures known as stipules, which are located on each side of the leaf base and may resemble scales, spines, glands, or leaflike structures.
Detailed explanation-5: -The leaf is divided into three parts: i) leaf apex – the tip of the leaf blade; ii) leaf margin – the edge of the leaf; and iii) leaf veins – tiny capillaries.