Which of the following pairs is of unicellular algae :
(1) Laminaria and Sargassum
(2) Gelidium and Gracilaria
(3) Anabena and Volvox
(4) Chlorella and Spirulina
If you are commenting for the first time, please read the guidelines.
If you are answering for the first time, please read the guidelines.
Ans: (4) Chlorella and Spirulina
Explanation: Chlorella and Spirulina are unicellular green algae, which are commercially very important.
Anabena is cyanobacteria, Laminaria, Sargassum, Gelidium, Gracilaria are multicellular algae.
Volvox is unicellular colonial algae.
Phycoerythrin is the major pigment in (1) Brown algae (2) Red algae (3) Blue green algae (4) Green algae
For which one of the following, Bohr model is not valid : (1) Singly ionised neon atom (Ne+) (2) Hydrogen atom (3) Singly ionised helium atom (He+) (4) Deuteron atom
Which of the following statements is correct ? (1) Adenine pairs with thymine through two H-bonds. (2) Adenine pairs with thymine through one H-bond. (3) Adenine pairs with thymine through three H-bonds. (4) Adenine does not pair with thymine.