97.0k views
4 votes
Which is the term for the hard outer covering of some dinoflagellates?

a) Test
b) Shell
c) Frustule
d) Theca

User Jeprubio
by
8.2k points

1 Answer

0 votes

Final answer:

The hard outer covering of some dinoflagellates is called a theca, which is a complex structure made up of cellulose plates that provides protection and supports movement.

Step-by-step explanation:

The term for the hard outer covering of some dinoflagellates is theca. Dinoflagellates are known for their diversity in shape and size, and many have a complex cellulose armor known as a theca. This structure consists of several large cellulose plates enclosed in vesicles, just inside the outermost membrane, helping them move with a characteristic whirling motion due to their two flagella. The function of the theca is similar to that of a shell or exoskeleton in other organisms, providing not only protection but also aiding in the organism's mobility.

User KacZdr
by
8.0k points

Related questions

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.