Q-11: Simple permanent tissue:
- A) Xylem
Xylem is a simple permanent tissue responsible for water and nutrient transport in plants. It consists of dead, hollow cells (tracheids or vessels) that offer structural support. Parenchyma and phloem are complex tissues with multiple cell types serving different functions.
Q-12: Natural sources of crude drugs:
- D) All of the Above
Crude drugs can originate from plants, animals, and minerals. Plant-based drugs are most common, while animal-derived drugs (e.g., beeswax, gelatin) and mineral-based drugs (e.g., calcium carbonate, kaolin) are also used.
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