Animal Kingdom Question 953
Evolution of porifera from protozoans is evidenced by the animals such as
Options:
A) Euglena
B) Chlamydomonas
C) Volvox
D) Paramecium
Show Answer
Answer:
Correct Answer: C
Solution:
Volvox is a colonial green alga that exhibits characteristics of both unicellular and multicellular organisms, making it a key organism in the study of the evolution of multicellularity.
The transition from protozoans (single-celled organisms) to porifera (simple multicellular organisms) is thought to have involved intermediate stages like choanoflagellates.
In a Volvox colony, individual cells coordinate their activities, a characteristic that is essential for multicellular organisms. Hence, Volvox serves as evidence for the evolution of animals from unicellular ancestors.
BETA
