Megasporophyll of Pinus is equivalent to angiospermic

Options

A. (a) carpel
B. (b) ovule
C. (c) pedicel
D. (d) placenta

Answer

To answer the question, "Megasporophyll of Pinus is equivalent to angiospermic," we will follow these steps:

### Step 1: Understand the Structure of Megasporophyll
- The megasporophyll is the female reproductive structure found in gymnosperms like Pinus. It is commonly referred to as the female cone and is responsible for producing ovules, which contain the eggs.

### Step 2: Identify the Equivalent Structure in Angiosperms
- In angiosperms (flowering plants), the equivalent structure to the megasporophyll is the carpel. The carpel consists of the stigma, style, and ovary, and it also contains ovules that develop into seeds after fertilization.

### Step 3: Compare Functions of Megasporophyll and Carpel
- Both structures serve similar functions:
- **Egg Production**: Both the megasporophyll and carpel produce eggs (ovules).
- **Transport of Male Gametes**: The carpel has a style that acts as a canal for the transport of male gametes (pollen) to the ovary. The megasporophyll has a simpler canal-like structure for this purpose.
- **Reception of Pollen**: The stigma in the carpel acts as the site for pollen grain reception, while the megasporophyll has a similar function.

### Step 4: Analyze the Given Options
- The question provides options to choose from:
- A) Carpel (Correct)
- B) Ovule (Incorrect, as it is only a part of the structure)
- C) Pedicle (Incorrect, as it refers to the flower stem)
- D) Placenta (Incorrect, as it is specific to angiosperms)

### Conclusion
- The correct answer is A) Carpel, as it is the structure in angiosperms that is equivalent to the megasporophyll in Pinus.