Home
Class 11
BIOLOGY
Positively photoblastic seeds germinate ...

Positively photoblastic seeds germinate only in presence of

A

soil

B

air

C

light

D

all of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question about positively photoblastic seeds, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Definition of Photoblastic Seeds**: - Photoblastic seeds are seeds that require light for germination. They are sensitive to light conditions. 2. **Identify the Types of Photoblastic Seeds**: - There are two types: positively photoblastic seeds, which germinate in the presence of light, and negatively photoblastic seeds, which germinate in darkness. 3. **Focus on Positively Photoblastic Seeds**: - Positively photoblastic seeds specifically need light to initiate the germination process. 4. **Consider the Options Given**: - The options provided are: 1. Soil 2. Air 3. Light 4. All of these 5. **Analyze Each Option**: - **Soil**: While soil provides nutrients and a medium for growth, it is not a requirement for germination in terms of light sensitivity. - **Air**: Air is necessary for respiration, but it does not directly influence the light requirement for germination. - **Light**: This is the critical factor for positively photoblastic seeds, as they require light to germinate. - **All of these**: This option suggests that all factors are equally necessary, which is not accurate for positively photoblastic seeds. 6. **Conclusion**: - The correct answer is option 3: **Light**. Positively photoblastic seeds germinate only in the presence of light. ### Final Answer: Positively photoblastic seeds germinate only in the presence of **light**. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

Seed i.e. positive photoblastic is

Seeds of parasitic plants like orobanche germinate in the presence of

The condition of viable seed, when seeds do not germinate even in presence of favourable environmental condition is called

Light inhibits seed germination of

In seed germination the first to occur is

A seed which is ubale is germinate in the presence of light is

The seeds of tomato can not germinate in the presence of light and hence are known as