What is a Pinnately veined leaf?
Pinnately-compound leaves have their leaflets arranged along the middle vein. Bipinnately-compound (double-compound) leaves have their leaflets arranged along a secondary vein, which is one of several veins branching off the middle vein.
What is an example of a Pinnately compound leaf?
An example of this type is the maple leaf. Pinnately compound leaves take their name from their feather-like appearance; the leaflets are arranged along the middle vein, as in rose leaves or the leaves of hickory, pecan, ash, or walnut trees. In a pinnately compound leaf, the middle vein is called the midrib.
What is the structure of a leaf that relates to photosynthesis?
In leaves, cells in the mesophyll (the tissue between the upper and lower epidermis) are uniquely suited to carry out photosynthesis on a large scale. This is due to their high concentration of chloroplasts, which are the sites of photosynthesis. More chloroplasts means more photosynthetic capability.
What is the function of Palmately compound leaf?
They help to reduce transpiration (the loss of water by aboveground plant parts), increase solar reflectance, and store compounds that defend the leaves against predation by herbivores.
How is Pinnately compound leaf different from Palmately compound leaf explain with one example each?
Answer: In pinnately compound leaf, the number of leaflets are present on a common axis, the rachis, which represents the midrib of the leaf as in neem. In case of a palmately compound leaf, the leaflets are attached at a common point, i.e., at the tip of petiole as in silk cotton.
How can you differentiate Pinnately compound leaf from a leafy branch?
Difference # Pinnate Compound Leaf:
- It bears a lateral bud in its axil.
- The leaf does not develop from an axillary bud.
- A leaf does not arise in the axil of any structure.
- The pinnate compound leaf may bear two lateral stipules at its base.
- Stipules are not found at the bases of the leaflets of a compound leaf.
How is a Pinnately compound?
How do you identify a Pinnately compound leaf?
Pinnately compound leaves will have twig-connecting petioles of varying lengths with rows of smaller sub-leaves above the axil. These leaflets form on either side of an extension of the petiole or rachis, and although they may look like several small leaves, each of these leaflet groups is actually considered one leaf.
What is a compound needed for photosynthesis?
Carbon dioxide as well as water are needed for photosynthesis.
What are adaptation of leaf for photosynthesis?
The adaptations of leaf for photosynthesis are: Large surface area for maximum light absorption. The presence of chlorophyll containing chloroplast. Thin structure– Short distance for carbon dioxide to diffuse into leaf cells. The stomata that allow carbon dioxide to diffuse into the leaf and oxygen to diffuse out.
What is Pinnately compound?
A leaf which is divided into smaller leaflets, those leaflets arranged on each side of the leaf’s central stalk/rachis (axis). A bipinnately compound leaf is twice pinnate; a leaf blade divided into leaflets and having twice-diverged branching. …
What is the difference between Pinnately compound leaf and Palmately compound leaf?
The main difference between pinnate and palmate is that pinnate leaves resemble a feather, containing rows of smaller sub-leaves above the axil whereas palmate leaves contain three or more lobes or veins arising from a common point.
Where are the leaflets located on a pinnate compound leaf?
Pinnately compound leaves take their name from their feather-like appearance; the leaflets are arranged along the middle vein, as in rose leaves or the leaves of hickory, pecan, ash, or walnut trees. In a pinnately compound leaf, the middle vein is called the midrib.
What are the different types of compound leaves?
A compound leaf is a single leaf that is divided into leaflets, or structures that themselves looks like individual leaves. Compound leaves can come in many forms, but the basic types are pinnate , palmate, and ternate (also known as trifoliate ).
What kind of leaf is a palmately compound leaf?
A palmately compound leaf is defined as the one in which the petiole bears terminally, articulated to it, a number of leaflets which seem to be radiating from a common point like fingers from the palm, as in silk cotton tree, lupin, Gynandropsis, etc. On the basis of number to leaflet, a palmately compound leaf may be of the following types:
How is a pinnate leaf different from a Neem leaf?
In a pinnately compound leaf, the midrib of the leaf is divided into numerous leaflets and all connected by a common axis. Eg., Neem. These can be further differentiated into: Pinnate: A compound leaf that has an axis on each side of the midrib is known as a pinnate leaf.