Red tides in the sea are because of

(1) Red dinoflagellates

(2) Geladium

(3) Red Chrysophytes

(4) Red algae

(1) Marine and photosynthetic

(2) Variety in colors

(3) Cell wall with silica

(4) Two flagella

(1) Black

(2) White

(3) More than one option is correct

(4) Pink

(1) Loose cellulose plates in cell wall

(2) The outer surface has more loosening of cell wall than inner

(3) Rapid multiplication

(4) Not harmful for others

(1) Harmful for marine organisms

(2) Gonyaulax

(3) Aquatic habitat

(4) Color is due to pigment in the cell of Dinoflagellates

(1) All, 2, both

(2) Many, 3, trasverse falgella

(3) Most, 2, both

(4) All, 3, longitudinal flagella

(1) Euglenoids

(2) Dinoflagellates

(3) Diatoms

(4) Eubacteria

(1) Mostly marine

(2) Have pellicle

(3) Lack cell wall

(4) Flexible body

(1) Two, longitudinal and transverse

(2) Two, long and short

(3) Three, two long and one short

(4) Three, two longitudinal and one transverse

(1) Always photosynthetic

(2) Pigments like higher plants

(3) Pellicle provides flexibility

(4) Found in stagnant water