Chalazogamy is characteristics of

• A. Casuarina
• B. Betula
• C. Cucurbita
• D. Both (A) and (B)

Chalazogamy refers to a specific type of fertilization in plants where the pollen tube grows through the chalaza, which is the region of the ovule opposite the micropyle. This process is particularly notable in certain plant species.

Identifying Chalazogamy

Among the options provided:

• Casuarina - This genus is known for its unique reproductive structures and exhibits chalazogamy.
• Betula - Commonly known as birch, this genus also shows characteristics of chalazogamy.
• Cucurbita - This genus, which includes squashes and pumpkins, does not typically exhibit chalazogamy.

Correct Answer

Therefore, the correct choice is Both (A) and (B), as both Casuarina and Betula demonstrate chalazogamy in their reproductive processes.