Question:
Phyllode is present in
Phyllode is present in
Updated On: Jul 28, 2022
- Asparagus
- Euphorbia
- Australian Acacia
- Opuntia
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
In several species of Acacia found in the deserts of Australia the bipinnate lamina is absent. Instead petiole and part of the rachis become flattened into sickle-shaped structure for performing the function of food synthesis. Such a flattened petiole which carries out the functions of the lamina is called phyllode. Formation of phyllode is a mechanism to reduce transpiration because (i) it is vertically placed and (ii) has fewer stomata.
Was this answer helpful?
0
0
Top Questions on The Stem
- Which of the statements given below is not true about formation of Annual Rings in trees?
- Casparian strips occur in
- Which of the following groups of plants have underground stems?
- In Bougainvillea thorns are the modifications of
- The tuber of potato is a stem structure because it
View More Questions
Questions Asked in AIPMT exam
- The terga, sterna and pleura of cockroach body are joined by
- AIPMT - 2015
- Cockroach
- Three identical spherical shells, each of mass m and radius r are placed as shown in figure. Consider an axis X X' which is touching to two shells and passing through diameter of third shell. Moment of inertia of the system consisting of these three spherical shells about XX' axis is
- AIPMT - 2015
- Moment Of Inertia
- The species $ {Ar, K^+}$ and $ {Ca^{2+}}$ contain the same number of electrons. In which order do their radii increase?
- AIPMT - 2015
- properties of d block elements
- The hilum is a scar on the
- AIPMT - 2015
- Post-Fertilisation : Structures And Events
- The heat of combustion of carbon to $ {CO_2}$ is $ {- 393.5 \, kJ/mol}$. The heat released upon formation of 35.2 g of $ {CO_2}$ from carbon and oxygen gas is:
- AIPMT - 2015
- Enthalpy change
View More Questions
Concepts Used:
Stem - Nodes and Internodes
Underground Modification
In some plants, stems are modified to form underground structures that store food. Some examples of the underground stem are as follows:
Rhizome: They are non-green, fleshy structures that resemble roots in appearance. The presence of nodes and internodes distinguishes them from roots. When a rhizome grows horizontally, it is called Straggling Rhizome. This type of rhizome is seen in turmeric, ginger, etc. If a rhizome grows in an oblique direction, it is called RootStock Rhizome. This is found in bananas and alocasia.
Therefore it has nodes and internodes. Ginger is a stem and not a root because it has nodes and internodes. It is a rhizome, an underground modification of the stem.