What is racemose inflorescence?
“Racemose is a type of an inflorescence where the main axis continues to grow indefinitely and does not terminate in flower.” This is why it is also known as an indefinite or indeterminate inflorescence.
What are the three types of inflorescence?
There are three patterns in which racemose inflorescences grow: elongated, shortened, or flattened. Raceme Inflorescence: In this type of inflorescence, the main axis is long, with flowers attached to pedicels that attach to the main axis. The older flowers on the bottom often have longer pedicels than the younger topmost flowers.
What do you mean by inflorescence?
Inflorescence is defined as an arrangement of clusters of flowers on the floral or main axis. The major division of inflorescence is into two parts i.e., racemose and cymose depending on whether the apex gets converted into a flower or continues to grow.
What is a cymose inflorescence?
Cymose inflorescences are a type of inflorescence where the flower is the terminating point of each floral axis, and each flower follows a basipetal pattern of growth. This means that the main axis grows until it develops its first flower, which is when the growth of the stalk stops, and additional secondary branches and flowers grow laterally.
What is raceme example?
A compound raceme, also called a panicle, has a branching main axis. Examples of racemes occur on mustard (genus Brassica) and radish (genus Raphanus) plants.
What plants have a raceme inflorescence?
Some of the examples of plants with racemose inflorescence are mustard, snapdragon, gulmohar, wheat, barley, parsley, etc.
What is racemose inflorescence and its types?
Ans: Arrangement of flowers in the floral axis is known as inflorescence. The inflorescence is classified into two main types, Racemose inflorescence (Indeterminate Inflorescence) and Cymose inflorescence (Determinate Inflorescence).
What is typical raceme?
Characteristic feature of Racemose Inflorescence: Main axis is known as peduncle and the main axis growth is indefinite and continues to produce flower buds. Peduncle is monopodial in nature. Flowers grouping is less common.
What is the definition of raceme?
Definition of raceme : a simple inflorescence (as in the lily of the valley) in which the flowers are borne on short stalks of about equal length at equal distances along an elongated axis and open in succession toward the apex — see inflorescence illustration.
What are types of inflorescence?
Types of InflorescenceRacemose Inflorescence. In this type of inflorescence, the flowers branch laterally on the floral axis. ... Cymose Inflorescence. In this type of inflorescence, the flower is the terminating point of each floral axis. ... Compound Inflorescence. ... Cyathium. ... Verticillaster. ... Hypanthodium. ... Hypogynous. ... Perigynous.More items...
What is racemose and cymose inflorescence?
Racemose and cymose are two types of inflorescence, i.e. arrangement of flowers around the main axis. In racemose, the main axis continues to grow indefinitely and the flowers are borne laterally. In cymose inflorescence, flowers are borne terminally on the floral axis and shows determinate growth of the main axis.
What are 3 types of inflorescence?
Types of Inflorescence (Floral structure)Spike - an elongate, unbranched, indeterminate inflorescence with sessile flowers.Spikelet - a small spike, characteristic of grasses and sedges.Raceme - an elongate, unbranched, indeterminate inflorescence with pedicelled flowers.Panicle - a branched raceme.More items...
What is cymose inflorescence give example?
Examples are calotropis, hamelia patens etc. Cymose Capitulum or Head – In this type, the peduncle or the main stem is in the shape of a circular disk. The formation is similar to a raceme head. The flowers are either sessile or sub-sessile which are arranged in a centrifugal order like a globose head.
Which is the best example of racemose inflorescence?
Complete answer: Caesalpinia is an example of racemose inflorescence. In a flowering plant, a cluster of flowers on its branches is called an inflorescence.
Is Wheat a raceme?
So, the correct answer is 'Raceme-Wheat'.
What is simple inflorescence?
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant.
Which is the best example of racemose inflorescence?
Complete answer: Caesalpinia is an example of racemose inflorescence. In a flowering plant, a cluster of flowers on its branches is called an inflorescence.
Which type of inflorescence is found in agave?
Most species in the subgenus Agave (branched inflorescences) developed features that enable them to be pollinated by nectar-feeding bats, although other pollinators may currently be more important. They grow whitish to yellow flowers which produce copious nectar and pollen at night.
What is racemose inflorescence give suitable examples?
Raceme – In this type of inflorescence, the central axis is elongated, and therefore the flowers grow on a short stalk which is called the pedicel. There is an unbranched central axis growing between the branch and stem of leaves where these flowers develop. Examples of such flowers are mustard, crotalaria etc.
Which type of inflorescence occurs in pea?
The pea inflorescence is a compound raceme, typical of many legumes1,10,13. During the vegetative phase, each of the nodes produced by the vegetative shoot apical meristem (SAM) consists of a leaf with a shoot axillary meristem that generally remains dormant until the floral transition has occurred (Fig. 2a–c).
What is racemose inflorescence?
Inflorescenece is a type of arrangement of flowers around the floral axis. When the main axis does not terminate in a flower and continues to grow,...
Which plant shows Racemose inflorescence?
Some of the examples of plants with racemose inflorescence are mustard, snapdragon, gulmohar, wheat, barley, parsley, etc.
What is the difference between Racemose and Cymose?
The main difference between racemose and cymose inflorescence is in the location of flowers on the main axis. Flowers are borne laterally and the m...
Is umbel Racemose inflorescence?
Yes, umbel is a type of racemose inflorescence, wherein the main axis is shortened. Each flower has a pedicel of the same length, spread from a com...
Is Racemose acropetal?
Yes, the arrangement of flowers is acropetal in racemose inflorescence, i.e. younger flowers or buds are present at the top and older flowers are p...
1. What is racemose inflorescence?
Ans. The type of inflorescence where the central axis continues to grow, and flowers are arranged laterally either in acropetal or centripetal orde...
2. What is acropetal and centripetal succession?
Ans. In acropetal succession, the flowers at the bottom of the stem are older, and younger ones are at the top. Similarly, in centripetal successio...
3. How is racemose inflorescence different from cymose inflorescence?
Ans. In racemose inflorescence, the central axis continues to grow whereas, in a cymose inflorescence, the peduncle ends into a single flower.
What are the different types of inflorescences?
Under these two broad categories, inflorescences are further divided into several types. These are – racemose inflorescence, Cymose, compound, mixed and special inflorescence.
What is the indefinite inflorescence?
This is a type of inflorescence where the central axis or the peduncle continues to grow, and the flowers are stalked laterally in an acropetal order. Acropetal order means that flowers at the bottom are older than the ones on the top. Flowers can also be seen arranged in a centripetal order. Consequently, it belongs to the indefinite inflorescence category. Moreover, it is also called indefinite or infinite type as its main stem grows continuously.
What is a capitate racemose?
Capitate – This type of racemose inflorescence has a globose structure. Apart from that, it has tightly clustered sessile flowers growing on a compressed rachis. For instance, Mimosa pudica belongs to the capitate inflorescence family.
What is a spike in Malabar?
Spike - It is similar to raceme inflorescence as it is also unbranched and an indeterminate. But it does not have a pedicel; instead, the flowers emerge directly from the stem. Flowers that are attached to the stem and have no stalk are called sessile flowers. Malabar nut and chaff flowers are some of the few spike inflorescence.
What are some examples of capitulum inflorescences?
It also develops from a flattened central axis. It has two types of florets – ray florets at the peripheral and disc florets in the centre. Some examples of capitulum inflorescences are marigolds, sunflowers, dahlia and other plants from the sunflower family.
What is a spikelet?
Spikelet – As the name suggests, spikelet is tiny spikes. It consists of florets called the rachilla. Each floret contains lemma, palea, lodicules, stamens and pistils which are enclosed in two bracts. This type of inflorescence can be seen commonly in grass flowers.
What is a panicle in a plant?
Panicle – An inflorescent which has several branches is called a panicle. It is a type of raceme inflorescence where the branches are also raceme. It can be either determinate or indeterminate. Some plants which fall under this category are pistachio, oat, crabgrass etc.
What is a racemose?
Racemose is a type of an inflorescence where the main axis continues to grow indefinitely and does not terminate in flower. This is why it is also known as an indefinite or indeterminate inflorescence.
Which axis of the raceme has a pedicellate flower?
A1. Raceme: The main axis is unbranched, elongated and bears pedicellate flowers laterally in acropetal succession. The older flowers present at the base have longer stalk as compared to the upper younger flowers.
What is the name of the axis of an inflorescence that bears flowers?
When the main axis of the inflorescence is branched and lateral branches bear flowers in a simple raceme manner, it is known as compound raceme or panicle.
What type of spikes can be found in spikelets?
Spikelets can have raceme, panicle, spike or compound spike (spike of spikes) inflorescence
What is the name of the spike with a fleshy axis?
A5. Spadix: This is also a modified spike with a fleshy axis. It contains numerous sessile flowers arranged acropetally. The spadix is enclosed by leaf-like large, bright, colourful and curved bracts known as a “ spathe”. Female flowers are present at the base, male and sterile flowers are present at the top. It is found in monocotyledons.
Which type of inflorescence has short pedicellate flowers?
B1. Corymb: In this type of inflorescence peduncle is short with pedicellate flowers. All the flowers appear at the same level. The stalk of the lower flower is longer than younger upper flowers.
What is a compound spike?
Compound spike is known as the spike of spikelets. Sessile flowers (spikelets) are present on the branched main-axis. Examples: wheat, barley, sorghum, oats etc.
What is a raceme orchid?
A raceme ( / reɪˈsiːm / or / rəˈsiːm /) or racemoid is an unbranched, indeterminate type of inflorescence bearing pedicellate flowers (flowers having short floral stalks called pedicels) along its axis. In botany, an axis means a shoot, in this case one bearing the flowers.
What is the name of the plant that has flowers on a showy raceme?
A plant that flowers on a showy raceme may have this reflected in its scientific name, e.g. Cimicifuga racemosa.
What is a spikelet in a grass?
A spikelet can refer to a small spike, although it is primarily used to refer to the ultimate flower cluster unit in gras ses ( family Poaceae) and sedges (family Cyperaceae ), in which case the stalk supporting the cluster becomes the pedicel.
What is a spike in a plant?
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 (genus Achyranthes ). A spikelet can refer to a small spike, although it is primarily used to refer to ...
What does racemus mean in Latin?
From classical Latin racemus, cluster of grapes.
What is a spike in which the florets are densely crowded along a fleshy axi?
Spadix. A spadix is a form of spike in which the florets are densely crowded along a fleshy axis, and enclosed by one or more large, brightly–colored bracts called spathes. Usually the female flowers grow at the base, and male flowers grow above.
Is Spathoglottis plicata a raceme?
The inflorescence of Spathoglottis plicata, a terrestrial orchid, is a typical raceme.
What is a raceme?
raceme - a single flower grows on a pedicel (short stalk), at an upward angle between the peduncle and the branch of a leaf. Multiple flowers grow along a long, unbranched axis.
What is the name of the stem that supports the inflorescence?
We can categorize the type of inflorescence based on how the flowers are arranged on the main stem that supports the inflorescence, which is called the peduncle, and the timing of flowering. The simplest classification includes two groups: determinate inflorescence and indeterminate inflorescence.
Which cyme only grows on one side of the peduncle?
the scorpioid cyme - flowers only grow on one side of the peduncle. The forget-me-not family has this structure.
What is the name of the flower that grows on its own short stalk?
In a raceme, a single flower grows on its own short stalk, called a pedicel, at an upward angle between the peduncle and the branch of a leaf. In this arrangement, multiple flowers grow along a long, unbranched axis.
What is the name of the grouping of flowers on a branch?
In plant biology, we call the grouping or cluster of flowers on a branch or a network of branches an inflorescence.
Where is the oldest flower in a determinate inflorescence?
In a determinate inflorescence, the oldest flower is located in the middle of the cluster, at the end of the main axis , and the peripheral, younger flowers grow from axillary buds.
Do spike flowers grow on pedicels?
spike - flowers grow directly from the stem and are not on pedicels.
