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Dinoflagellates are plant like protists live in/on……..
a) fresh water             
b) marine water
c) both a and b         
d) land

c

Explanation: the cell wall is generally missing but when present it is hard and made up of cellulose



Diatoms are plant like protists possess ……flagella.
a) two 
b) three           
c) four
d) five

a

Explanation: One flagellum circling the cell and the other perpendicular flagellum moves the organism in certain direction



In the coastal areas, the poisonous and destructive red tides are frequently occur due……..
a) Euglenozoids         
b) Dinoflagellates
c) Diatoms                  
d) Brown algae

b

Explanation: the color of water changes to red



Which of the following plant like protists are made up of shell?
a) Rhodophyta           
b) Chlorophyta
c) Diatoms                 
d) Brown algae

c

Explanation: having two shells made up of silica



The chloroplast of diatoms contains……
a) chlorophyll a          
b) chlorophyll c
c) carotenoids             
d) all of these

d

Which of the following reproduction method/s is/are common in diatoms?
a) sexual                                 
b) asexual
c) both                        
d) none of them

b

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