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Question : A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to

Answer»

Pteridophytes 
Gymnosperms
MONOCOTS 
Bryophytes 

Solution :• Bryophytes is such a group of plants in which gametophytic stage is haploid and has thallus. Motile male gametes - special reproduction structure are produced in Antheridia.
• These gametes need thin layer of WATER by doing movements to REACH to female reproductive organ - ovary (Archegonia).
•While DIVISION of labour is SEEN in pteridophytes, gymnosperms and monocots. Their plant body possesses higher type of body organization.


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