root-types of roots

1. Subject : Science
Topic :plant - Structure and function
sub topic : Roots

2. PARTS OF PLANTS
PLANT
Root
stem
leaf
flower
fruit
seed

4. Germination
of seed

5. ● Root forms from the radical.
ROOT

6. ● Roots are very special plant
organs.
● Roots are the most
important and underground
part of a plant, which are
collectively called the root
system.
ROOT

7. ● Type of root : 1) tap root,
2) fibrous root.
ROOT

8. ● Root of some plant produce secondary root.
● It has large and dominant primary root.
● example :
carrot, pine tree
Name the plants with taproots.
The plants with taproots are:
● Beetroot
● Carrot
● Parsley
Tap root

9. Some
edible
roots
include
Ginger Turnip
Yam tubers Cassava tubers

10. ● Thread-like root arising
from stem are called
fibrous roots.
● These are shorts and do
not grow deep into the
soil.
● example :
Grass, coconut tree, Wheat,
rice and corn
Fibrous roots

11. 3) Adventitious Root:
● A root growing on the stem, leaf, or other body parts apart from the
usual the basal root system of the plant,
● particularly the radicle or root branches
ROOT

12. MODIFICATION OF ROOT
★ The aerial parts of these
plants are worn out due to
unfavourable conditions.
★ eg., the taproots of carrot
and turnip get swollen to
store food.

13. MODIFICATION OF ROOT
● These roots grow
obliquely from the
basal node of the
stem.
● Eg., roots of the
sugarcane.

14. MODIFICATION OF ROOT
breathing root
Respiration
The root tips of these plants
have minute pores called
lenticels through which
they respire.

15. Prop root :
● These roots develop from the
branches of the tree, hang
downwards, and penetrate
into the ground thereby
supporting the tree.
● Eg., roots of the banyan
tree.
MODIFICATION OF ROOT

16. PURPOSE MODIFICATION OF ROOT
➔ Food storage
➔ respiration
➔ support
➔To absorb and transport water.
➔minerals from the soil

17. Roots perform the functions
● Roots absorb water and nutrients from the soil.
● They anchor the plant firmly.
● They help in storing food and nutrients.
● Roots transport water and minerals to the plant.

18. see
different
types of
roots

19. What we learn?
● Part of plants.
● Seed germination.
● Root
● Types of roots.
● function of roots

20. Assignment
● Write the different types of roots with example.