Question

Along the stolon in salps blastozooid buds differentiate in groups separated by division planes called what?

Answer 1

In salps, blastozooid buds form along the stolon and are separated by division planes called stigmata, which act as boundaries to organize the development of individual zooids.

Step-by-step explanation:

The development stages of salps include the formation of blastozooid buds along the stolon. These buds differentiate in groups that are separated by division planes called stigmata. Stigmata serve as boundaries between budding zones, effectively organizing the sequential development of the zooids, which are the individuals in the interconnected chains of salps.

During the developmental stages of multicellular organisms such as plants, fungi, and animals, there is a common theme of repeated cellular division that allows for the organized structuring of different parts of the organism. For instance, in plants and fungi, structures like septa and sporangia play roles in organizing spore dispersal and hyphal growth. Similarly, in animal development stages like cleavage and gastrulation lead to the formation of organisms' body plans with specific cellular arrangements.

Answer 2

The division planes that segregate groups of blastozooid buds in salps are called strobila, similar to division structures in other organisms like septa in fungi or the creation of sporangia in plants.

Step-by-step explanation:

The question pertains to the developmental process in salps, specifically during the early embryonic stage along the stolon. In salps, blastozooid buds differentiate in groups that are segregated by division planes known as strobila.

This process can be somewhat analogous to the division seen in multicellular organisms where early cleavage events in a zygote give rise to a blastula. Furthermore, in embryology, the formation of a structured blastula eventually leads to gastrulation, which is the process by which a blastula rearranges to form multiple germ layers that will later give rise to various organ systems.

In plants and fungi, there are similar types of division structures, such as the septa in fungal hyphae which allow for intercellular interactions, and the production of sporangia on plants that release haploid cells. These division structures, although different in function and organism, hint at the ubiquity of organized division and differentiation in biology.