Which one develops from funicle of base of ovule?
(a) Sarcotesta
(b) Aril
(c) Arillode
(d) Operculum

Options

A. Sarcotesta
B. Aril
C. Arillode
D. Operculum.

Answer

To solve the question "Which one develops from funicle of base of ovule?", we will analyze each option step by step.

### Step 1: Understand the Funicle
The funicle is a stalk that attaches the ovule to the ovary wall. It plays a crucial role in the development of certain structures associated with the ovule.

### Step 2: Analyze Each Option
- **(a) Sarcotesta**:
- The sarcotesta is derived from the outer integument of the ovule. It does not develop from the funicle. Therefore, this option is incorrect.

- **(b) Aril**:
- The aril is a structure that develops from the funicle at the base of the ovule. It is known as the true aril and is directly associated with the funicle. This option is correct.

- **(c) Arillode**:
- The arillode, also known as the false aril, develops from the exostome of the micropyle, not from the funicle. Thus, this option is incorrect.

- **(d) Operculum**:
- The operculum is formed by the fusion of sepals or petals and does not develop from the funicle. Therefore, this option is also incorrect.

### Conclusion
Based on the analysis, the correct answer is **(b) Aril**, as it develops from the funicle of the base of the ovule.

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