Find the oddman out giving reasons:-?

Question

1)Spirogyra,Oscillatoria,Fucus,Yeast
2)Chlamydomonas,Ulothris,Nostuc,Cladophora
3)Riccia,Penicillium,Anthoceros,Funaria

Answer 1

Spirogyra — ... is a genus of filamentous green alga of the order Zygnematales
Oscillatoria, are cyanobacteria which are actually large photosynthetic bacteria.
Cyanobacteria used to be called “blue-green algae but this was refuted.
Fucus is a genus of seaweed.
therefeore the oddman out is Oscillatoria which is a bacteria
fucus and Spirogyra are both algae

Chlamydomonas are unicellular flagellates
Ulothrix is a species of algae
Nostoc is a species of blue green algae
therefore the odd man out is Chlamydomonas which is a microorganism the Ulothrix and Nostoc are both algae

Riccia is a member of the plant order Bryophyta, including the mosses, liverworts, and hornworts.
Antihero is a species of algae
penicillin is any of a large group of natural or semisynthetic antibacterial antibiotics derived directly or indirectly from strains of fungi of the genus Penicillium
therefore the odd man out is penicillium which is a mould Riccia and Antihero are both species of algae

Answer 2

1) All are algae but Spirogyra and oscillatora are unbranched and fresh water algae . Fucus is branched ,macrosopic and marine algae. So Fucus is the odd man out.

2) Chlamydomonas is the only unicellular and motile alga in this group. The other two are multicellular and non-motile. So Chlamydomonas is the odd man out.
Kindly learn to spell the words correctly before venturing to test others.
It is Ulothrix and NOT Ulothris. By the way what is Nostu...?. I have taken it as a Nostoc.


3) Riccia and Anthoceros are bryophytes ,only Penicillium is a fungus. So It is Penicillium odd man out.

Answer 3

1. oscilatoria - bacause it is cyanobacteria, not true algae like Spirogyra and Fucus

2. Nostoc - for exactly the same reason because it is cyanobacteria, not true algae like Chlymydomonas adn Ulothrix (mind the spelling)

3. Penicillium - because it is fungus, while the other are plants related to mosses (Bryophyta)