In Pheretima, septa are absent between which segments?
3/4 and 9/10
4/5 and 8/9
5/6 and 7/8
7/8 and 6/7
During emergency which of the following hormone is secreted?
In cockroach, larval and nymphal characters are maintained by
Which of the following is a transparent tissue?
All of these
Which of the following cell type is capable of giving rise to other cell types in sponges?
Animals having a built in thermostat to maintain constant body temperature are known as