Thigmotaxis is not shown by
Paramecium
Amoeba
Ascaris
Hydra
C.
Ascaris
Ascaris do not show thigmotaxis.
Amoeba shows thigmotaxis. On coming in contact with a solid object Amoeba generally avoid it by moving in a different by forming pseudopodia.
Hydra is known to respond to a variety of stimuli, both external and internal. On contact with a solid object other than a prey, the whole body usually contracts rather rapidly.
On contact with a hard solid object Paramecium induces avoiding response.
Which of the following cell type is capable of giving rise to other cell types in sponges?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
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?
Aldosterone
Thyroxine
Adrenalin
Calcitonin
In cockroach, larval and nymphal characters are maintained by
ecdysone
salivary glands
parotid gland
juvenile hormone
Animals having a built in thermostat to maintain constant body temperature are known as
biothermic
poikilothermic
oligothermic
homeothermic
Which of the following is a transparent tissue?
Tendon
Fibrous cartilage
Hyaline cartilage
All of these
