Plant Propagation Techniques Quiz

Design a year-long project to compare the effectiveness of different grafting techniques in horticulture. Outline the steps you would take, the variables you would control, and how you would measure success across different plant species.

• Start with selecting plant species, perform grafting using one technique, and measure growth rate.

• Select multiple plant species, apply various grafting techniques, control environmental factors, and measure growth, survival rate, and yield.

• Choose one plant species, apply all grafting techniques in the same environment, and measure height increase.

• Use multiple grafting techniques on a single species without controlling any environmental variables, and observe general health.

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DOK Level 4: Extended Thinking

Propose a detailed experimental setup to investigate the impact of different cutting angles and hormones on root development in cutting propagation. Include hypotheses, materials, methods, and expected outcomes.

• Test one cutting angle with one hormone, predict faster rooting, use basic materials like pots and soil.

• Test multiple cutting angles and hormones, use a controlled environment, detailed recording of root development stages, predict optimal conditions for rooting.

• Only test different hormones without varying cutting angles, use simple observational methods.

• Use random cutting angles and random hormone applications, with minimal controls and basic observations.

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DOK Level 4: Extended Thinking

Develop a comprehensive plan to use tissue culture techniques for conserving an endangered plant species. Include steps for initiation, multiplication, rooting, and acclimatization stages, and how you would address genetic diversity concerns.

• Focus only on the multiplication stage to quickly produce many plants, ignoring genetic diversity.

• Initiate cultures from multiple genetic samples, systematically multiply, root, and acclimatize, ensuring genetic variation is maintained.

• Use tissue culture on a single sample, with basic multiplication and rooting, not focusing on acclimatization or genetic diversity.

• Randomly select plant samples for tissue culture without a planned approach to stages or genetic diversity.

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DOK Level 4: Extended Thinking

Imagine you are tasked with improving seed propagation methods for a crop that has a low germination rate. Describe a multi-year research project where you would test different seed treatments, environmental conditions, and planting techniques to increase germination rates and overall crop yield.

• Test one seed treatment in a single environment and measure germination rate.

• Test various seed treatments, control environmental conditions rigorously, use statistical methods to analyze data, and aim to improve both germination and yield.

• Focus only on changing planting techniques without altering seed treatments or environmental conditions.

• Apply random seed treatments without any controlled environment or systematic measurement.

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DOK Level 4: Extended Thinking

Create a detailed project plan for using micropropagation to rapidly expand a nursery's inventory of a popular ornamental plant. Include stages of lab setup, plant selection, media preparation, contamination control, and a business model for commercialization.

• Focus solely on lab setup and plant selection, ignoring media preparation and contamination control.

• Include detailed plans for each stage, from lab setup to commercialization, with emphasis on scalability and cost-effectiveness.

• Only prepare media and control contamination without considering other stages or commercial aspects.

• Randomly select plants and prepare media without a structured plan for stages or business aspects.

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DOK Level 4: Extended Thinking

What is a rootstock?

• The Top of a grafted plant

• The bottom of a grafted plant

• The part where the grafted plant are joined together

• This is not a part of a plant

Which of the following best describes the interaction that occurs between a plant’s reproductive parts during self-fertilization?

• Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches the filament, where the sperm fertilizes the egg. 
• Pollen moves from the ovule up through the style and is released from the stigma. The pollen is transferred to the anther, where the sperm fertilizes the egg.
• Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary, where the sperm fertilizes the egg.
• Pollen is released from the stigma and is transferred to the anther. A pollen tube grows down from the anther through the filament and fuses with the ovule, where the sperm fertilizes the egg. 

What is the sticky substance that pollen lands on called? (a)  

• stigma
• filament
• anther
• stamen

The `​ (a)   ` attract pollinators. Pollen is deposited on the  `​ (b)   `. The pollen grain grows through pollen tube and fuses with the `​ (c)   ` . 

• petals
• stigma
• ovule
• filament
• sepal

________ is considered from the important modern ways to increase crops.

• Cutting

• Grafting

• Tissue culture

• Layering