Medicinal Plants

Step 1: Understanding Arjuna bark.
The Arjuna tree (*Terminalia arjuna*) belongs to the family Combretaceae. This tree is well known for its medicinal properties, particularly for heart health.
Step 2: Analyzing the options.
(A) Combretaceae: Correct — Arjuna belongs to the Combretaceae family.
(B) Gnetaceae: This is incorrect, as Gnetaceae is a separate plant family.
(C) Rutacea: Rutaceae is the family of citrus fruits, not Arjuna.
(D) Solanacea: Solanaceae is the nightshade family, which is unrelated to Arjuna.
Step 3: Conclusion.
The correct answer is (A) Combretaceae as Arjuna belongs to this family.

Step 1: Understanding Anomocytic stomata.
Anomocytic stomata (also known as paracytic stomata) are characterized by having guard cells that are surrounded by a group of similar cells. These stomata are commonly found in plants like Cassia acutifolia (senna).
Step 2: Analyzing the options.
(A) Fox glove: This plant is known for having anomocytic stomata, but it is not the typical example used in textbooks.
(B) Atropabelladona: This plant does not exhibit anomocytic stomata.
(C) Urgeniaindica: Not typically associated with anomocytic stomata.
(D) Cassia acutifolia: Correct — Cassia acutifolia, or senna, has anomocytic stomata.
Step 3: Conclusion.
The correct answer is (D) Cassia acutifolia, as it is a known plant with anomocytic stomata.