Step 1: Understanding the Concept:
The ovary is the primary female reproductive organ responsible for gametogenesis and steroidogenesis.
Ovarian dimensions and lateral activity exhibit significant species-specific differences in ruminants.
Detailed Explanation:
Statement (I) compares the size of ovaries between water buffaloes (Bubalus bubalis) and cattle (Bos indicus Bos taurus).
Physiological and anatomical studies indicate that buffalo ovaries are smaller, lighter, and more compact than those of cattle.
On average, cattle ovaries measure about \( 3.5 \text{ to } 4.0 \text{ cm} \) in length, whereas buffalo ovaries measure about \( 2.0 \text{ to } 2.5 \text{ cm} \) in length.
This makes Statement (I) correct.
Statement (II) discusses the relative size of the right and left ovaries in cows and buffaloes.
In both species, the right ovary is physiologically more active than the left ovary.
Approximately \( 60\% \) of ovulations and luteal developments occur on the right ovary.
Due to this increased functional activity and the presence of larger luteal and follicular structures, the right ovary is typically larger, not smaller, than the left ovary.
This makes Statement (II) incorrect.
Step 2: Final Answer:
Statement (I) is correct but Statement (II) is incorrect.