Multiple choice

A 'thallus' refers to plant body having

  1. vascular system

  2. stem and leaves but no roots

  3. root and stem but no leaves

  4. no distinction of stem, leaves and roots
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A thallus is an undifferentiated plant body that lacks distinct stem, leaves, and roots. This term is used for simple plants like algae, fungi, and some bryophytes where vegetative tissues are not organized into specialized organs. Options A, B, and C all describe differentiated structures, which contradicts the definition of thallus.

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