Question

Four students observed some plants and recorded their observations and conclusions in the table below :

Name of the student	Observation	Conclusion
Suman	Body thallus-like	Algae
Rohan	Main plant body is a sporophyte.	Bryophytes
Mohit	Male and female gametophyte do not have an independent free living existence.	Gymnosperms
Meera	Chlorophyll bearing simple thalloid and autotrophic organisms which are attached to the substratum by rhizoids.	Algae

Which student(s) made the correct conclusion?

• A. Suman, Mohit & Meera
• B. Mohit only
• C. Suman, Mohit & Rohan
• D. Suman and Mohit

Answer 1

The correct option is D

Suman and Mohit

The correct option is D:

Explanation of the correct option :

Option D:

1. Algae have a thallus-like body and they belong to the group Thallophyta.
2. The microsporophylls and megasporophylls are arranged on cones and do not have an independent existence.

Explanation of the incorrect option :

Option A :

1. Meera's observation is incorrect.
2. Chlorophyll bearing simple thalloid and autotrophic organisms which are attached to the substratum by rhizoids belong to bryophytes.

Option B :

1. Suman correctly identified algae.
2. Mohit correctly identified gymnosperms.

Option C :

1. Rohan's observation is incorrect.
2. The main plant body is a gametophyte in bryophytes.

Therefore,

1. Thallus-like body is found in algae.
2. In bryophytes, the main plant body is a gametophyte.
3. In gymnosperms, male and female gametophytes do not have an independent free-living existence.
4. Chlorophyll bearing simple thalloid and autotrophic organisms which are attached to the substratum by rhizoids belong to bryophytes.

Final answer: Suman and Mohit made the correct conclusion.