Zoospore of Albugo possesses flagella

Which possess flagella ?

Zoospores are

Zoospores are

Zoospores are

Zoospores are

Fern spermatozoids possess flagella

Fern spermatozoids possess flagella

Diatoms float on the surface of water, even though they do not possess flagella. Justify.

Why diatoms float on the surface of water even when they do not possess flagella?

Assertion (A) : Flagella is essential to seek out a nutritionally more favorable enviroment. Reason (R ) : When E-coli are cultured in medium rich in glucose they lack flagella when grown in nutritionally poor medium they possess flagella.