Dinoflagellates have *
(1) Two transverse flagella
(2) Two longitudinal Flagella
(3) No Flagella
(4) One transverse and One longitudinal flagella
Answers
Answer:
Explanation:
Dinoflagellages have two flagella in that ‘one lies longitudinally’ and the “other transversely” in the furrow between the plates of the wall.
They are ribbon like transverse flagella possessing multiple waves. These flagellar movement that produces the forward propulsion and it makes possible the turning of the organism in particular direction.
The “longitudinal flagellum” is conventional in appearance with few and no hairs. They are common in marine plankton and fresh water habitats.
Answer:
Answer 4
Explanation:
Dinoflagellates possess two flagella, one (the transverse flagellum) may be contained in a groove-like structure around the equator of the organism (the cingulum), providing forward motion and spin to the dinoflagellate, the other (the longitudinal flagellum) trailing behind providing little propulsive force, mainly acting as a rudder. Another characteristic of the dinoflagellates is the wall composition and structure; early classification of the dinoflagellates was based on the presence (termed armoured) or absence (termed unarmoured) of a rigid outer cell covering (or theca). Evidence has since been found to suggest there is an intergradation between these types. The pattern (or tabulation) of armoured plates which form the theca of the so-called armoured forms is still a vital element of not only dinoflagellate classification but dinocyst classification as well. This is because the tabulation of a dinoflagellate may be reflected in the features of the cyst it produces (this is correctly referred to as paratabulation).