The peculiar pungent smell of cockroach is produced by the secretions of :
pheromones
flame cells
abdominal glands
cervical glands
A.
pheromones
Pheromones are the secretion of small amount of chemical substances leading to specific physiological or behavioural responses in other members of the same species. They are mainly used to induce mating.
The presence of arginase confirms that :
urea cycle is operating
urea cycle may be operating
arginine is being converted into ornithine
arginine is being converted into citrulline
Hypersecretion of growth hormone in the period of growth lead to :
acromegaly
cushing syndrome
midgets
cretinism
The amount of bile released in proportion to the amount of:
fat in meal
protein in meal
carbohydrate in meal
all of the above
Which of the following does not match ?
Pancreas - Glisson's capsule
Antigen - Antibody
Thyroid - Goitre
Enzyme - Substrate
Intercellular communication in multicellular organism occurs through :
digestive system only
respiratory system only
nervous system only
both nervous and endocrine system
Tongue is under control of :
trigeminal nerve
facial nerve
automatic nervous system
glossopharyngeal nerve
Which of the following does not play a role in blood coagulation ?
Vitamin K
Vitamin D
Calcium ions
Fibrinogen
In a vertebrate which germ layer forms the skeleton muscles ?
Ectoderm
Endoderm
Mesoderm
Both 'a' and 'c'
