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In earlier classification system which o...

In earlier classification system which organisms were included under "Plants" :-

A

Bacteria, BGA, Fungi, Bryophyte, Ferns and Spematophytes

B

Bacteria, protozoa, Green algae, Porifera and Moss

C

Green algae, Moss, Bryophytes, Protozoa and Porifera

D

Moss, Ferns, Gymnosperms, Protozoa and Porifera

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### Step-by-Step Solution: 1. **Understanding the Earlier Classification System**: - In earlier classification systems, organisms were categorized primarily based on the presence or absence of a cell wall. Organisms with a cell wall were generally classified under "Plants". 2. **Identifying Organisms with Cell Walls**: - **Bacteria**: These organisms have a cell wall made of peptidoglycan. In the past, this characteristic led to their classification under plants. - **Blue-Green Algae**: Also known as cyanobacteria, they possess a cell wall made of cellulose, which is a characteristic of plants. - **Fungi**: They have a cell wall made of chitin. Historically, they were included in the plant kingdom due to the presence of a cell wall. - **Bryophytes**: These are non-vascular plants that have a cell wall made of cellulose, placing them firmly in the plant category. - **Angiosperms and Gymnosperms**: These are higher plants that also have cell walls made of cellulose. 3. **Excluding Organisms without Cell Walls**: - **Protozoa**: These are unicellular organisms that do not have a cell wall, thus they were not classified under plants. - **Porifera (Sponges)**: These organisms also lack a true cell wall, which excludes them from the plant category. 4. **Conclusion**: - Based on the above analysis, the organisms that were included under "Plants" in the earlier classification system are bacteria, blue-green algae, fungi, bryophytes, and higher plants (angiosperms and gymnosperms). Protozoa and porifera are excluded due to the absence of a cell wall. ### Final Answer: The organisms included under "Plants" in the earlier classification system are: - Bacteria - Blue-Green Algae - Fungi - Bryophytes - Angiosperms and Gymnosperms
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