Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Biology Diversity in The Living World Animal Kingdom
In the absence of a closed vascular system, how do sponges manage to distribute the nutritive substances from choanocytes to rest of the cells?
1
Through cell to cell diffusion.
2
Through mesogloea which acts as the food reservoir and distribution system.
3
Through cell to cell diffusion and amoebocytes
4
More than one of the above
5
None of the above