Identify strawberry runner daughter plants
Trace a vegetative stem from a parent to a new rooted plant.
Section B15.1 · Asexual reproduction
Exam scope and assessment notes
Mapped to the named 0973 section using teaching from the corresponding single-science course. A 0973-specific review of every Core and Supplement objective is still in progress. Written practice is self-checked; it does not demonstrate supervised laboratory competence or award an official Cambridge grade. This qualification reports two grades on the 9–1 scale; confirm the entry route for your zone and exam series.
Before you begin
- Recall cells, DNA, inherited characteristics and the distinction between growth of an organism and production of offspring.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What is the strawberry runner in this diagram?
What you will learn
- Locate the runner, node and daughter plant
- Distinguish a runner from a root or seed
Identify strawberry runner daughter plants
| Feature | Meaning |
|---|---|
| Runner | Horizontal vegetative stem |
| Node | Site of daughter shoot and root development |
| Independence | Rooted daughter can continue under suitable conditions |
| Event scope | The same plant can also have a separate sexual route |
Locate the runner, node and daughter plant
A strawberry runner is a horizontal stem extending from a parent plant. At a node, a daughter plant can develop leaves and roots, eventually becoming capable of independent growth. The new plant arises from vegetative material of one parent without fusion of gamete nuclei in this event. It is an example of natural asexual reproduction.
Trace the connection in the diagram: parent plant, horizontal runner stem, daughter shoot at a node and daughter roots below. The runner itself is a stem, not the same structure as the roots that grow from the node. A photograph may show only part of that route. Say which structures are visible and use the supplied caption rather than claiming unseen roots are proved.
Distinguish a runner from a root or seed
Once rooted, a daughter can be separated from the parent connection in a horticultural record and continue growing under suitable conditions. Rooting and independence are distinct from simply seeing a long stem. A horizontal stem without a daughter plant does not by itself show successful production of an independent offspring.
A strawberry plant can also produce flowers, fruit and seeds through a different reproductive route. The presence of a runner in one record does not prove that the species never reproduces sexually. Classify the particular event shown. In the no-mutation runner model, the daughter shares its parent’s genotype even if its age, size or growing conditions differ.
Sources for this lesson
Pause and explain
Which feature best supports a developed runner daughter?
Worked example
A diagram shows a parent linked by a horizontal stem to a node with leaves and roots. Identify the reproduction method.
Show the worked solution
- Trace the runner stem from the parent.
- Identify the rooted daughter at its node.
Answer Vegetative asexual reproduction by a runner; the node develops a daughter plant.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Identify the runner and the daughter roots in the supplied diagram.
Give me a hint
Separate the horizontal connection from structures below the node.
Compare my reasoning
- The runner is the horizontal stem.
- Roots grow below the daughter node.
Runner: horizontal stem from the parent. Daughter roots: structures growing below the new plant’s node.
Look for these in your work
- Identify the stem connection
- Distinguish daughter roots
Explain why a rooted runner daughter is an asexual offspring in the supplied model.
Give me a hint
Use origin and genetic-copying information.
Compare my reasoning
- It develops from one parent’s vegetative stem.
- No gamete fusion occurs in the runner event.
It develops from one parent’s vegetative material without gamete fusion, producing a genetically identical daughter in the no-mutation model.
Look for these in your work
- State one vegetative parent
- Link copying to offspring
A strawberry plant has both runners and flowers. Must every offspring shown be asexual?
Give me a hint
Classify the particular reproductive event.
Compare my reasoning
- The runner event is vegetative and asexual.
- A separate fertilised-seed event uses a different mechanism.
No. A runner daughter is asexual in this record, while offspring from a supplied fertilised-seed event arise sexually. The species label alone does not classify every event.
Look for these in your work
- Separate the events
- Avoid an absolute species-wide claim
Common mistakes
- Calling the runner a root.
- Assuming the species can never also produce seeds.
What can you explain now?
Which feature best supports a developed runner daughter?
Compare with the explanation
A node with its own shoot and roots
It can develop into an independent plant.
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Make it stick
Trace a runner from parent to daughter and distinguish the runner stem from the daughter roots.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.