What are the major divisions in the Plan | Class 9 Science Chapter Diversity in Living Organisms, Diversity in Living Organisms NCERT Solutions

Question:

What are the major divisions in the Plantae? What is the basis for these divisions?

Answer:

The kingdom Plantae is divided into five main divisions: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms.

The classification depends on the following criteria:

• Differentiated / Undifferentiated plant body

• Presence / absence of vascular tissues

• With/without seeds

• Naked seeds/ seeds inside fruits

(i)  Thallophyta : these are simple , thalloid and undifferentiated body parts. They do not have roots, stems and leaves.

(ii)  Bryophyta : their plant body is more differentiated and has root ,stem and leaf-like body parts. They do not have vascular tissue.

(iii)  Pteridophyta : they have true root, stem and leaf. They possess well differentiated vascular tissue.

(iv)  Gymnosperm : the plants in which ovules are not enclosed by any ovary wall i.e naked - seeded plants.

(v) Angiosperm : seeds are enclosed in fruits.


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Welcome to the NCERT Solutions for Class 9 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 7 , Question 4: What are the major divisions in the Plantae? What is the basis for these divisions?....