Tag: morphology of leaf

If the stomata and waxy cuticle are present on submerged leaves, they may disturb the buoyancy of the leaf. Hence, the stomata are found in the upper surface of the submerged plant. The stomata in the leaf are open majority of the time because there is no need for water conservation.

Venation is the arrangement of veins in a leaf. In reticulated venation, veins are interconnected and form a web-like network. There is a prominent vein called the midrib from which many small veins arise which finally form a net-like structure in the lamina. This kind of venation is seen in dicots. for example, mango. 

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, ficus. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, Zea (maize). Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation.

Venation is the arrangement of veins on the leaves. It is basically of 2 types, reticulate and parallel. Reticulate venation involves irregular distribution of veins to form a network. Parallel venation involves the veins running parallel to each other. In pinnate or unicostate venation, the lamina has a single principal vein or midrib. It produces lateral veins. In palmate or multicostate venation, lamina has more than one principal vein. In Musa, the venation is unicostate parallel. 

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, Hibiscus, papaya, Ficus, Bambusa. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, plum, Zea (maize). Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation. However, there are exceptions in monocots like Smilax and Colocasia. They show reticulate venation. Thus, the correct answer is 'Smilax.'

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, ficus. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, Zea (maize). Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation.

Cajlakhjan, working on floral initiation, coined the term florigen for the flowering hormone thought to be present in photoinduced leaves and plants. It is supposed that leaf prepare a special compound A on receiving $CO _{2}$. A on turn produces B in dark and is followed by formation of C (florigen). The florigen translocated from vegetative meristems to floral initiation.

Veins in leaves are made up of xylem and phloem. It is useful in providing mechanical support to the leaf. It also helps in transport of both water and minerals via xylem tissue and transport of organic nutrients via phloem tissue to the rest of the plant.

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, ficus. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa. Leaves of monocot plants generally show parallel venation and leaves of dicot plants generally show reticulate venation.

Parallel venation means the veins present within the leaves are arranged parallel to each other. These veins never join any other veins. No branching is seen in parallel venation. All the monocots are parallelly venated whereas the dicots have reticulate venation except Corymbium and Calophyllum which are parallelly venated. So, the correct answer is 'Corymbium'.