Roots developing from plant parts other than radicle are:
Radish is an example of:
► Fusiform roots have tapering on both ends.Radish has tapering too on both sides hence they are fusiform roots.
► Napiform root: Turnip
► Conical root: Carrot
► Tuberous root: Sweet potato
Roots associated with nitrogen fixing bacteria are:
Nodulated Roots: The roots having the irregular or the round mass or a lump called nodules within the cells are known as nodulated roots.The roots of leguminous plants possess these characteristic swelling nodules which are caused by colonies of nitrogen fixing bacteria (Rhizobium).
The edible part of turnip is:
Turnip is a root vegetable. So we eat the root of turnip. Therefore the edible part of turnip is root.Turnip,carrot has modified root and potato,turmeric, ginger has modified stem to store food.
Which is a modification of root that does not store food?
Stilt root helps in support of plant and is not for food storage.
Stem developes from______.
The stem is the ascending part of the axis bearing branches, leaves, flowers and fruits. It develops from the plumule of the embryo of a germinating seed. It bears nodes and internodes.
Water is absorbed by______.
Root hairs in plants have large surface area and is surrounded by water soil and nutrients and due to large surface area root hairs absorb water for the growth of plants.
Which is an offset?
The short lateral stem called the offset in some aquatic plants (such as Eichhornia) bears leaves and tufts of roots at the node and gives rise to new plants.
Rhizome of ginger is a modification of stem because:
Thus, the correct answer is option B.
Phylloclade is found in______.
Phylloclade is found in Opuntia and Cactus. Phylloclades and cladodes are modified branches. They are flattened structures that are photosynthetic and resemble leaf-like branches. They store water inside the tissue. The leaves are modified into spines.
Thus, the correct answer is option D.
Broad part of leaf is:
The Blade, or lamina, is the broad, flat part of the leaf. Photosynthesis occurs in the blade, which has many green food-making cells.
Nodulated roots occurs in______.
Nodulated root is the character of pea family or Leguminosae family because nodules are found for nitrogen fixation.
Pneumatophores occur in plants of______.
Pneumatophores are short, vertical and negatively geotropic roots that occur in mangrove plants. Plants having pneumatophores grow in salty marshes. They have lateral roots that grow upward into the air from horizontally secondary roots. These are called as halophytes.
Thorns, spines and prickles are:
Thorns, spines and prickles are modifications in plants that act as defensive organs and prevents them from attack from various insects.
In onion the swollen underground structure is:
A monocot can be distinguished from a dicot by:
Venation refers the to pattern of arrangement of veins in the leaflet. The monocots have their leaf veins arranged in a parallel manner with respect to each other whereas in case of dicots the the leaf veins are reticulate or muzzled up.
The placenta is attached to the developing seed near the______.
The placenta is attached to the developing seed near the hilum.
A plant with parallel venation is______.
Grass is the correct option because veins on the lamina run parallel to one another is called parallel venation .It is characteristically found in moncot plants and grass is a characteristic of moncot plant.
Leaves are changed into spines in Xerophytic structure called:
A dicot plant showing parallel venation is:
Reticulate venation is a characteristic of dicots and parallel venation is of monocots. But few exceptions are also seen in this generalization parallel venation is also found in dicotplants.
Example: Calophyllum, corymbium , etc., and reticulate venation is also found in monocot plants such Alocasia, Smilax, etc.
Verticillaster inflorescence occurs in:
Verticillaster is a special type of inflorescence seen in Leucas. At each node of the stem two axillary opposite cymose inflorescences develop on either side. The cyme in the axil of each leaf, starts as a dichasial cyme but subsequently become monochasial scorpioid cyme. As a result, the cyme bends round the stem on either side and meets a similar cyme from the opposite side. Hence, at each node there is a cluster of flowers completely surrounding the stem. It is a characteristic of family Labiatae.
► Cucurbitaceae family shows axillary solitary inflorescence.
► Thyrse inflorescence is a characteristic of Rubiaceae family.
► Capitulum inflorescence is a characteristic of family Asteraceae.
Therefore, the correct answer is option D.
In cyathium the ratio between female to male flower is:
Cyathium inflorescence consists of a single central female flower surrounded by many groups of male flowers. In each group the male flowers are borne in scorpiod manner and the inflorescence is surrounded by an involucre.
Capitulum is a modification of______.
Capitulum (Head): It is a modified raceme in which the main axis is flattened, called receptacle.
A biparous cyme ending in uniparous cyme constitutes______.
A biparous cyme ending in uniparous cyme constitutes the verticillaster. Verticillaster inflorescence is an inflorescence in which the flowers are arranged in a seeming whorl, consisting in fact of a pair of opposite axillary, usually sessile, cymes, as in many mints.
A verticillaster is a fascicle with the structure of a dichasium; it is common among the Lamiaceae. Many verticillasters with reduced bracts can form a spicate (spike-like) inflorescence that is commonly called as a spike.
Flowers are sessile in______.
Flowers are sessile in spike. A spike is an unbranched, indeterminate inflorescence, similar to a raceme but bearing sessile flowers (sessile flowers are attached directly, without stalks). Examples occur on Malabar nut (Justicia adhatoda) and chaff flowers.
The flowers in the raceme/racemose are arranged______.
It is acropetally because since the plant continues to grow it's clockwise arrangements gives the maximum absorption of light for photosynthesis and help the plant to form buds for it's upgrowth.
The most advanced type of Inflorescence is:
Capitulum (Head): It is a characteristic of compositae (Asteraceae). Peduncle is flattened to form receptacle that bears centripetally arranged small sessile flowers called florets surrounded by involucre of bracts.
Example: Marigold, Sunflower.
Three types of flowers occur in the Inflorescence of:
Axis of Inflorescence is______.
Pedicellate flowers arising from a single point form______.