During emergency which of the following hormone is secreted?
Aldosterone
Thyroxine
Adrenalin
Calcitonin
C.
Adrenalin
| Adrenalin | Aldosterone | Thyroxine | Calcitonin |
| Secreted by Chromaffin cells of adrenal medulla | Secreted by adrenal cortex | Produced in manufactured and synthesized from iodine | Secreted by parafollicular cells of thyroid |
| Controlled by Autonomic Nervous System (ANS) | Mineralocorticoid or salt retaining hormone | Also called tri-iodothyronine hormone | Also called Thyrocalcitonin (TCT) hormone. |
| Also called 'emergency hormone' | Function is in conservation of sodium and water and dimination of potassium. | Function is to control metabolism, regulating tissue growth and development. | Main role is to lower the amount of calcium and phosphate in the blood. |
Animals having a built in thermostat to maintain constant body temperature are known as
biothermic
poikilothermic
oligothermic
homeothermic
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
In cockroach, larval and nymphal characters are maintained by
ecdysone
salivary glands
parotid gland
juvenile hormone
Which of the following is a transparent tissue?
Tendon
Fibrous cartilage
Hyaline cartilage
All of these
Which of the following cell type is capable of giving rise to other cell types in sponges?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
