Page 1 - 2.Lesson notes-Plantae-Thallophyta,Bryophyta, Pteridophyta

SAI International School
Subject- Biology
Chapter- Diversity in living organisms
Subtopic-Plantae:Thallophyta,Bryophyta,Pteridophyta

Module-25
Lesson Notes

Kingdom Plantae

Plantae

• All plants and trees we see around us come under this Kingdom.
• All of them are autotrophic with chloroplast in their cell.
• Their cell wall is made up of cellulose.
• The plant kingdom is classified into two major divisions as Cryptogams and
Phanerogams.

Cryptogamae

• Cryptogams literally mean ‘plants with hidden reproductive parts’
• Cryptogams are plants that produce spores to reproduce instead of seeds.
• So these plants do not have flowers or fruits.
• Cryptogams are further classified as thallophytes, bryophytes and pteridophytes.

Phanerogamae

• Phanerogams are plants that produce seeds for reproduction.
• Some of them do not produce flowers, while the others produce flowers.
• Phanerogams are further classified as gymnosperms and angiosperms.

Classification of plants (Plantae) :-
Plants are divided into five groups. They are :-
• i) Thallophyta ii) Bryophyta iii) Pteridophyta iv) Angiosperms
v)gymnosperms

The criteria of classification in Planate:

• Components of Plants – whether they are distinct or not
• Presence of Special Tissues in plants for the transportation of food and water
• Presence of Seeds – whether the seeds are present inside the fruits or not