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Light inhibits seed germination of...

Light inhibits seed germination of

A

Lactuca

B

Capsella

C

Allium

D

Tobacco

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Seed Germination**: Seed germination is the process by which a seed develops into a new plant. This process can be influenced by various environmental factors, including light. 2. **Types of Seeds**: Seeds can be classified based on their light requirements for germination: - **Photoblastic Seeds**: These seeds require light to germinate. They are typically sown on the surface of the soil. - **Non-Photoblastic Seeds**: These seeds do not require light for germination and often germinate better in dark conditions. 3. **Role of Light in Germination**: Light plays a crucial role in seed germination. - **Red Light**: Generally promotes seed germination. - **Far Red Light**: Inhibits seed germination. 4. **Identifying the Plant**: The question asks which plant's seed germination is inhibited by light. - It is noted that some Mediterranean plants, such as **Allium cepa** (commonly known as onion), have seeds that are non-photoblastic and require darkness for germination. 5. **Conclusion**: Based on the information provided, the correct answer to the question is **Allium cepa**. This plant's seeds do not germinate well in light, making it the right choice. ### Final Answer: Light inhibits seed germination of **Allium cepa** (Onion). ---
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Knowledge Check

  • Seed germination is the sprouting of a seed and growth of the embryo present inside the seed into a seedling or young plant capable of independent existence. Refer the given figure showing seed germination and mark the incorrect option.

    A
    Cotyledons are brought out of the soil by the greater growth of hypocotyl
    B
    Cotyledons becoms green and functional as first leaves of the seedling.
    C
    The hypocotyl does not elongate much, instead the epicotyl grows and takes the plumule above the soil.
    D
    This kind of germination is found in seeds of beans.
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