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, transverse flagella 

(3) Most, 2, transverse flagella 

(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) Always photosynthetic

(2) Pigments like higher plants

(3) Pellicle provides flexibility

(4) Found in stagnant water

(1) Predator

(2) With cell wall

(3) Polysaccharide rich protein layer

(4) All are marine organisms