The type of ovule of Pinus is

Concept:

• The unit of the female reproductive organ is the pistil or carpel.
• The carpel has three regions- Stigma, Style, and Ovary. An ovary contains an ovule.
• There are six different types of ovules in Angiosperms on the basis of the position of different parts.
  • 1. Orthotropous 2. Anatropous 3. Hemitropous 4. Amphitropous 5. Campylotropous 6. Circinotropous

Explanation:

• Pinus has an Orthotropous type of ovule with a pollen chamber at the micropylar end.
• Orthotropous ovule: It is also called the Atropous ovule. The body of the atropous ovule is upright with micropyle, chalaza, and funicle falling in a straight line.
• Atropous ovules are known to occur in some 20 families of angiosperms like Polygonaceae, Piperaceae, etc.

Additional Information  

• Anatropous ovule: The body is completely turned at a 180-degree angle so it is called an inverted ovule.
• This is the most common type of ovule​ and considered as a “typical ovule”​ of Angiosperms.
• Found in 80% of families of angiosperms.
• Campylotropous ovule: This type of ovule has a curved body but its curvature is less than that of the anatropous ovule. At such the micropyle and chalaza are not in a straight line and the funicle lies at right angles to the chalaza.
• Campylotropous ovules are known to occur in families like Capparidaceae, Chenopodiaceae, etc.
• Circinotropous Ovule: In this type of ovule, the funicle is very long and forms a complete circle around the body of the ovule. This type of ovule occurs in certain Plumbaginaceae (Plumbago) and Cactaceae (Opuntia, Phyllocactus).