Rhodophyceae (red algae)

Question 1

pre-dominance of which pigment makes red algae “red”?

Answer 1

r-phycoerythrin

Question 2

Where are red algae mostly found?

Answer 2

Warmer marine habitat

Question 3

Red algae only occur in well lighted regions close to surface of water. True or false

Answer 3

False - occur in both well lighted regions close to the surface of water and great depths in oceans where relatively little light penetrates

Question 4

is red algae thallus
>Uni or multicellular
> red in colour ?

Answer 4

> Multicellular
YES

Question 5

Some red algae have complex body organisation. True or false

Answer 5

True

Question 6

Food storage in red algae is in the form of ____________ which is similar to _________ and _________ in nature

Answer 6

Floridean starch , amylopectin , glycogen

Question 7

vegetative reproduction in red algae is by ______________

Answer 7

Fragmentation

Question 8

Asexual reproduction in red algae is by ________________(motile/non-motile) spores

Answer 8

Non-motile

Question 9

sexual reproduction in red algae is _________ and by __________(motile/non motile) gametes

Answer 9

Ooogamous , non-motile

Question 10

Post fertilisation development in red algae is _________(complex/simple)

Answer 10

Complex

Question 11

Examples of red algae are :

Answer 11

Porphyra , gracilaria , gelidium , polysiphonia