Spirogyra

Question 1

Common name :

Answer 1

Pond silk / Water silk

Question 2

Habitat :

Answer 2

Spirogyra is commonly free floating fresh water algae, found in pond, lake , pools, slow running rivers.

Question 3

Habit :

Answer 3

Plant body is gametophytic thallus.
The thallus is long silky thread like structure called filament.

Question 4

Cell wall :

Answer 4

Rigid ,Protective , made up of outer Pectin and inner Cellulose, outer Pectin dissolves in water and forms Mucilage that make filament shiny and slippery structure.

Question 5

Cell membrane :

Answer 5

Present in between cell wall and cytoplasm. Generally made up of lipo-protein.

Question 6

Cytoplasm :

Answer 6

Cytoplasm is peripheral due to presence of central large vacuole , such type of cytoplasm is called primordial utricle.

Question 7

Chloroplast :

Answer 7

In each cell of spirogyra, there is presence of 1 (S. indica) - 16 (S. rectispora) chloroplasts.

Question 8

Some spirogyra are attached to the substratum with ?

Answer 8

Hultfast