Phylloclade is a special modified photosynthetic stem present mostly in xerophytes. They have a reduction in leaf size, early leaf fall, the formation of scaly leaves, spine, thorns, cuticle etc to reduce transpiration. In such cases, the stem becomes flattened and carry out photosynthesis.
What is cladode give example?
Cladode is a form of modified stem, which is green and fleshy in nature. The leaves are modified to form spines. The cladode arises from the axil of these leaves. There are many examples of plants in which there are stem modified to form cladode like Euphorbia tirucalli and Euphorbia antiquorum.
What is Phylloclade example?
Hint: A phylloclade is a modified stem responsible for photosynthesis. Melanoxylon is an example of a plant with phyllodes and cactus and Coccoloba has phylloclades.
In which plant Phylloclade is found?
These are generally found in passiflora. Another type of modification seen is thorn, seen in citrus plants. Phylloclade is also a type of stem modification where the flattened leaf-like structures are formed, which helps in photosynthesis, examples are cactus opuntia.
What is Phylloclade and Cladode explain with example?
Hint: Phylloclade is a type of flattened branch that has many nodes and internodes . … The phylloclade stem becomes leafy and fleshy. It is a commonly occurring condition in opuntia. Cladode is a type of modified stem . It is fleshy and green in nature .
Is Opuntia a cladode?
Opuntia species are fast-growing perennial succulents with thickened, often flattened, segmented cladodes, usually supporting spines. Most Opuntia will regenerate from seed, cladode fragments, and underground tubers.
What is cladode in Cactus?
A cladode is a stem modified for photosynthesis that looks like a leaf. It is flat for increasing the surface area, thick for storing water and green for photosynthesis. Cladodes are not leaves but swollen water-storing stem segments.
What is Phyllode in biology?
Definition. noun, plural: phyllodes. (1) A modified petiole in some plants in which the petiole is characteristically flattened resembling and performing functions similar to a true leaf, even replacing the true leaves as major photosynthetic structure in certain plant groups.
What is the function of Cladophyll?
cladode (cladophyll) A flattened stem or internode that resembles and functions as a leaf. It is an adaptation to reduce water loss, since it contains fewer stomata than a leaf. An example of a plant with cladodes is asparagus. A Dictionary of Biology.
Is Cactus a Cladophyll?
Cacti are dicots that have a fleshy, green, photosynthetic stem, the cladophyll, and leaves modified as spines. One group of cacti, Pereskia, has true leaves that are shed during long droughts. Some cacti are spineless and others have their spines modified as coarse hair.
What is a leaf tendril How does it help the plant?
Explanation: In botany, a tendril is a specialized stem, leaves or petiole with a threadlike shape that is used by climbing plants for support, attachment and cellular invasion by parasitic plants, generally by twining around suitable hosts found by touch.
Is phyllode present in Opuntia?
A blossom is new in the axil of a phyllode and phyllode does not happen in the axil of a leaf as it is itself a leafy configuration. Therefore, this is the correct option. Option C: Phylloclade is present in Opuntia and phyllode is absent in them.
Is Cladode found in Asparagus?
Plants in the genus Asparagus have determinate leaf-like organs called cladodes in the position of leaf axils.
Is Opuntia a Cladode or Phylloclade?
So, the correct answer is B – phylloclade.
Is hibiscus a simple leaf?
Hibiscus leaves are simple, alternate, auriculate and have ovate stipules. Leaves are between 7 and 15 centimeters long, and the axis of each leaf adorns a solitary flower. A hibiscus leaf exhibits two different shades of green on its upper and lower surfaces.
What are the 4 types of leaves?
There are two different types of leaves – simples leaves and compound leaves. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. They perform the function of photosynthesis and help in the removal of excess water from the aerial parts of the plant.
What is the function of a simple leaf?
The main function of a leaf is to produce food for the plant by photosynthesis. Chlorophyll, the substance that gives plants their characteristic green colour, absorbs light energy. The internal structure of the leaf is protected by the leaf epidermis, which is continuous with the stem epidermis.
What is Stolon in biology?
Stolon, in biology, a special slender horizontal branch serving to propagate the organism. In botany a stolon—also called a runner—is a slender stem that grows horizontally along the ground, giving rise to roots and aerial (vertical) branches at specialized points called nodes.
What is common to Phylloclade Phyllode and Cladode?
Either homologous or analogous organ.
What is phyllode Class 11?
Complete answer: The Phyllodes, which are like leaves in appearance and function, are modified petioles or leaf stems. These are flattened and extended in some plants, while the leaf itself is reduced or disappears. … This flattened or winged rachis or petiole is popularly known as the phyllode.