Question

Presence of transverse markings and reticulate vessels is a characteristic pharmacognostic feature of

• A. Castor seed
• B. Senna leaf
• C. Ispaghula husk
• D. Aloe

Hint:

Diagnostic pharmacognostic features are useful for correct identification and quality control of crude drugs.

Answer 1

The Correct Option is A

Concept:
Pharmacognostic features help in the identification of crude drugs using their macroscopical and microscopical characters.

Step 1: Understanding castor seed.
Castor seed is obtained from Ricinus communis. It is an important crude drug source of castor oil.

Step 2: Characteristic feature.
The presence of transverse markings and reticulate vessels is considered a characteristic pharmacognostic feature of castor seed.

Step 3: Why identification features are important.
Such diagnostic features help distinguish genuine crude drugs from adulterants and substitutes.

Step 4: Checking other options.
Senna leaf is identified by leaf characters and calcium oxalate crystals.
Ispaghula husk is known for mucilage and swelling index.
Aloe is a dried juice and has different diagnostic features.

Step 5: Final answer.
Therefore, the correct answer is castor seed. \[ \boxed{\text{Castor seed}} \]