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Identify the correct pair of statements...

Identify the correct pair of statements (i) White kernel of Coconut is a free nuclear endosperm (ii) In dioecious plants, autogamy is prevented but geitonogamy occurs (iii) Cleistogamous flowers are always self pollinated (iv) Castor is an endospermic seed.

A

i, ii

B

iii, iv

C

ii, iv

D

ii, iii.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each of the provided statements and determine their correctness. Let's go through them step by step. ### Step 1: Analyze Statement (i) **Statement:** White kernel of Coconut is a free nuclear endosperm. **Analysis:** The white kernel of coconut is actually a cellular endosperm, not a free nuclear endosperm. In free nuclear endosperm, there are no cell walls formed, resulting in a liquid state, while the white kernel is fibrous and cellular. **Conclusion:** This statement is **incorrect**. ### Step 2: Analyze Statement (ii) **Statement:** In dioecious plants, autogamy is prevented but geitonogamy occurs. **Analysis:** Dioecious plants have male and female reproductive organs on separate individuals. Autogamy (self-fertilization) cannot occur because there are no male and female organs on the same plant. Geitonogamy (pollination between different flowers of the same plant) also cannot occur for the same reason. **Conclusion:** This statement is **incorrect**. ### Step 3: Analyze Statement (iii) **Statement:** Cleistogamous flowers are always self-pollinated. **Analysis:** Cleistogamous flowers are indeed closed flowers that contain both male and female reproductive organs, allowing for self-pollination to occur. They do not open, which facilitates self-pollination. **Conclusion:** This statement is **correct**. ### Step 4: Analyze Statement (iv) **Statement:** Castor is an endospermic seed. **Analysis:** Castor seeds are classified as endospermic seeds because they contain a significant amount of endosperm, which serves as a food reserve for the developing embryo. **Conclusion:** This statement is **correct**. ### Final Evaluation - Statement (i): Incorrect - Statement (ii): Incorrect - Statement (iii): Correct - Statement (iv): Correct The correct pair of statements is (iii) and (iv).
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Knowledge Check

  • Assertion : In Cocos nucifera coconut water represents the cellular endosperm and the surrounding white kernel represents the free-nuclear endosperm. Reason : Endosperm is always completely consumed by developing embryo before seed maturation.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false
    D
    If both assertion and reason are false

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