Class 9 em sci ch 3 session 4

2. CHAPTER 3
DIVERSITY IN LIVING
ORGANISMS

3. TODAY’S TOPIC
 KINGDOM PLANTAE
 THALLOPHYTA
 BRYOPHYTA
 PTERIDOPHYTA

4. KINGDOM PLANTAE
 Multicellular
 Eukaryotes
 Have cell wall
 Autotrophs
Classified into 5 :
Thallophyta, Bryophyta,
Pteridophyta,
Gymnosperms, Angiosperms

5. CRITERIA FOR CLASSIFICATION
 Plant body is well differentiated
 Differentiated plant body has special tissues for
the transport of water and other substances.
 Ability to bear seeds
 Seeds are enclosed within fruits.

6. DIVISION - THALLOPHYTA
 Do not have well differentiated body
parts.
 Eukaryotes and Autotrophs
 The plants in this group are commonly
called algae.
 Predominantly aquatic.
 Examples are Spirogyra & Cladophora

7. SPIROGYRA

8. CLADOPHORA

9. DIVISION BRYOPHYTA
 Amphibians of Plant Kingdom
 They have stem and leaf like structures
 They do not have conducting tissues
 Examples : Funaria , Riccia

10. FUNARIA

11. RICCIA

12. DIVISION PTERIDOPHYTA
 Well differentiated body parts
 They have conducting tissues
 Reproductive organs are hidden -
Cryptogams
 There is no seed or fruit
 Have spores – naked embryo
 Examples : Fern, Marsilea

13. FERN

14. SPORES EMBRYO

15. CRYPTOGAMS PHANEROGAMS
THALLOPHYTA, BRYOPHYTA,
PTERIDOPHYTA
ANGIOSPERMS AND
GYMNOSPERMS
NO SEED AND FRUIT SEED, FRUIT, FLOWER IS
PRESENT
REPRODUCTIVE ORGANS ARE
HIDDEN
REPRODUCTIVE ORGANS ARE
EXPOSED
EMBRYO IS NAKED EMBRYO IS PRESENT INSIDE
THE SEED