Introduction
This plant life cycle question is a common Primary Science MCQ that tests whether students can identify each stage correctly from a diagram. Many students can spot the young plant and the adult plant, but they get confused by the missing stage. Once you understand the sequence of a plant life cycle, this question becomes much easier to answer with confidence.
The Question / Scenario Explanation
Source: P4 Question 1
Question (as shown): The diagram shows the life cycle of a plant. What is the stage marked X?
Options:
(1) egg
(2) seed
(3) nymph
(4) young plant
The diagram shows a mature plant on one side, a young plant on the other side, and the missing stage X in between them as part of the cycle.
Step-by-Step Solution / Explanation
Step 1: Identify the stages that are already shown
The diagram already shows a young plant and a more fully grown adult plant.
So the missing stage X should be the stage that comes before a young plant grows.
Step 2: Recall the basic plant life cycle
A simple plant life cycle usually goes like this:
- seed
- young plant or seedling
- adult plant
- new seeds produced again
This means the stage before the young plant is the seed.
Step 3: Choose the correct answer
The correct answer is:
(2) seed
✅ Final Answer: seed
Step 4: Explain why the other options are wrong
(1) egg is wrong because plants do not begin their life cycle with eggs in this context. Eggs are associated with animal life cycles, not the standard plant life cycle taught in primary science.
(3) nymph is wrong because a nymph is a stage in the life cycle of certain insects, such as grasshoppers and cockroaches. It is not a plant stage.
(4) young plant is wrong because the diagram already shows a young plant. Stage X must be the earlier stage before that.
Key Concepts Students Must Know
- A basic plant life cycle includes seed, young plant, and adult plant.
- Seeds germinate and grow into young plants.
- Adult plants produce seeds, which continue the cycle.
- Science MCQs often test whether students can match diagrams to the correct stage names.
Exam Tips / Common Mistakes
Exam Tips
- Look at the stages already shown before choosing an answer.
- Ask yourself what stage comes before the young plant.
- For a plant life cycle question, eliminate options that belong to animals or insects first.
- Use the diagram sequence, not guesswork, to decide the answer.
Common Mistakes
- Choosing young plant even though that stage is already shown in the diagram.
- Confusing plant stages with animal stages like egg or nymph.
- Memorising words without understanding the order of the plant life cycle.
- Not using the arrows in the diagram to follow the sequence properly.
Parent Insight
This plant life cycle question may look simple, but it builds an important science habit: reading diagrams carefully and connecting them to scientific concepts. Many children know the terms individually, but struggle when they must apply them in a sequence. Practising diagram-based questions helps students become more accurate in Science MCQs and open-ended questions.
Conclusion
In this plant life cycle question, the stage marked X must be the seed because seeds grow into young plants, which then become adult plants. The correct answer is option (2) seed.
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