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).

What are the types of spike inflorescence?

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.

What is inflorescence with example?

An indeterminate inflorescence may be a raceme, panicle, spike, catkin, corymb, umbel, spadix, or head. In a raceme a flower develops at the upper angle (axil) between the stem and branch of each leaf along a long, unbranched axis. … An example of a raceme is found in the snapdragon (Antirrhinum majus).

What are examples of Spike?

Verb Someone spiked the punch at the party. The medication caused his blood pressure to spike. She spiked the ball and scored the winning point. After he scored a touchdown he spiked the ball in the end zone.

What is racemic inflorescence?

noun Botany. a simple indeterminate inflorescence in which the flowers are borne on short pedicels lying along a common axis, as in the lily of the valley. a compound inflorescence in which the short pedicels with single flowers of the simple raceme are replaced by racemes.

How a spike differs from a raceme inflorescence?

A spike is a raceme, but the flowers develop directly from the stem and are not borne on pedicels, as in barley (Hordeum). A spike is a raceme except that the flowers are attached directly to the axis at the axil of each leaf rather than to a pedicel. An example of a spike is the cattail (Typha; Typhaceae).

What are Spike plants?

Spike, as it is usually called, (Dracaena indivisa ‘spikes‘) is a dramatic plant that has leaves shaped like swords. The leaves are sharp and require gloves when they are being handled. Spike is an evergreen plant that is used for its foliage, not its flower. This plant is very low maintenance. Spike is heat tolerant.

What does spike mean in medical terms?

Medical Definition of spiking : characterized by recurrent sharp rises in body temperature a spiking fever also : resulting from a sharp rise in body temperature a spiking temperature of 105°

What is spike in a flower?

In botany, a spike refers to a type of inflorescence (flower arrangement) that bears taller-than-average flowers, most usually on an axis that is unbranched. Similar to a raceme, the spike bears flowers that are directly attached to the plant, without any stalks whatsoever.

What is a spike used for?

A functional spike is used to determine the interaction with a new feature or implementation. To track such work items, in a ticketing system, a new user story can be set up for each spike, for organization purposes. Following a spike, the results (a new design, a refined workflow, etc.)

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Why is sunflower not a flower?

Sunflower is not a flower , but it is kind of inflorescence called capitulum in which the receptacle is flattened. It bears numerous sessible and small florests. The youngest floret is in the center and oldest lies at the periphery . Whole cluster of florets gets surrounded by bracts, known as involucre .

What is inflorescence class 11th biology?

A flower is a modified shoot wherein the shoot apical meristem changes to floral meristem. The arrangement of flowers on thefloral axis is termed as inflorescence.

Is Sunflower an inflorescence?

Capitulum: Inflorescence Of The Sunflower Family A capitulum or head, the characteristic inflorescence of the sunflower family (Asteraceae). Depending on the tribe, the inflorescence may consist of ray flowers, disk flowers, or both ray and disk flowers.

What is Racemose influence?

“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. The main characteristics are: Growth of the main axis (peduncle) is indefinite and continues to produce a flower bud.

How Cymose is different from Racemose?

The main difference between racemose and cymose inflorescence is that the flowers are borne laterally and the main floral axis continues to grow in the racemose inflorescence, whereas in the cymose type, flowers are borne terminally on the floral axis and the main axis shows limited growth.

What is meant by Cymose inflorescence?

cymose inflorescence (cyme; definite inflorescence) A type of flowering shoot (seeinflorescence) in which the first-formed flower develops from the growing region at the top of the flower stalk (see illustration).

What flower has spikes?

Roses. When you think of plants with thorns, the rose (Rosa sp.) may be the first to come to mind. There are many different types, but most grow with thorns along their stems.

What do spike plants look like?

Spike Dracaena Plant Basics and dracaena spikes are evergreen trees and shrubs that grow ribbon-shaped or sword-shaped leaves. The plants’ leaves sprout from a central stem or trunk. Most often, they are green, but they can appear in various other colors or can sport different-colored stripes.

What can I plant with a spike plant?

Here’s our suggestion: start with the Spike Dracaena in the middle or the back of the planter. Then add a mid-height flower or foliage plant, such as Coreopsis or Geraniums, all of which have the same moisture requirements of the Dracaena.

What is the main difference between Raceme and Spike?

A raceme is an unbranched, indeterminate inflorescence with pedicellate (having short floral stalks) flowers along the axis. A spike is a type of raceme with flowers that do not have a pedicel.

How does Spike and Raceme differ?

In context|botany|lang=en terms the difference between raceme and spike. is that raceme is (botany) an indeterminate inflorescence in which the flowers are arranged along a single central axis while spike is (botany) a kind of inflorescence in which sessile flowers are arranged on an unbranched elongated axis.

What is a flower spike?

A flower spike is a kind of inflorescence where a group of stalk-less flowers grow on an upright stem. The inflorescence of a plant is the arrangement of the individual flowers on the stem. … The rudimentary leaves of the flower bud are arranged around a central point, which grows to form the stalk or peduncle.

What is Corymb inflorescence?

Corymb is a botanical term for an inflorescence with the flowers growing in such a fashion that the outermost are borne on longer pedicels than the inner, bringing all flowers up to a common level. … Flowers in a corymb structure can either be parallel, or alternate, and form in either a convex, or flat form.

Is Lavender a spike flower?

Curiously, “spike” lavender has nothing to do with spikes or thorns. It’s derived from an old scientific name for the plant, Lavandula spica. “Spica” comes from “aspic“. The original name “aspis” was used by Romans of old for “viper” (together with the word “vipera“).

What are the SPIKES on a virus?

They ring the body of the virus like jewels in a crown, hence the name of this microbial family — coronavirus. Biologically speaking, those spikes are critically important. They are literally the point of contact that our own vulnerable lung cells have with the virus, SARS-CoV-2.

What is SPIKES in breaking bad news?

Community Oncology 2005; 2: 183-142. The SPIKES protocol for breaking bad news has four objectives: Gathering information from the patient • Transmitting the medical information • Providing support to the patient • Eliciting patient’s collaboration in developing a strategy or treatment for the future.

What does SPIKES stand for in nursing?

The four crucial headings are: Diagnosis, Treatment Plan, Prognosis and Support. Check whether your objectives are legitimate. Sometimes doctors might want the patient to accept their advice on treatment, not get upset and to feel optimistic and reassured about the future.

What is Spike origin?

Origin Spike is the new rewards program that offers Origin customers a way to get paid for saving energy – and help reduce the load on the electricity grid in the process. So far, over 13,000 Origin customers are Spike community members – and collectively they’ve earned over one million points to date.

Why is it called a spike?

The term comes from the meaning of the object — a spike allows you to go deep on a problem. A common analogy used is rock climbing. When you cannot go any further, you drive a spike in the rock. … Agile Spike allows you to go further.

Should you point spikes?

A Spike should be assigned points because it requires a team’s resources to complete. Also, anytime effort is put forth on a task, it should be made visible to the project. Team velocity can be negatively skewed if an abundant amount of Spikes are in your current iteration and have not been assigned points.

Are there male and female sunflowers?

Those tiny flowers on the head of a sunflower have a purpose—they can actually self-pollinate. While the ray florets cannot reproduce on their own (indeed, they lack any sex organs at all), the disc florets have both male and female sex organs.