The most accepted theory of ageing is :
less RBC in blood
thymus gland becomes non-functional
brain cells die with ageing
all of the above
B.
thymus gland becomes non-functional
Ageing is a progressive deterioration in structure and function of cells and tissues with age. According to the immunity theory of ageing due to decline of thymus, immunity decreases resulting in more diseases, damage and destruction of cells and tissues.
A flower characterised by monadelphous tubular stamens belongs to :
Solanaceae
Liliaceae
Malvaceae
Brassicaceae
Neurohypophysis secretes
ADH and oxytocin
oxytocin and estrogen
vasopressin and GH
vasopressin and estrogen
In angiosperms, triple fusion results in the formation of:
zygotic nucleus
polar nucleus
secondary nucleus
primary endosperm nucleus
Physiologically active thyroxine exists in which of the following form ?
Unbound
Bound to albumin
Bound to globulin
All of the above
In oogamy, fertilization involves :
a small non- motile female gamete and a large motile male gamete
a large motile female gamete and a small non-motile male gamete
a large non- motile female gamete and a small motile male gamete
a large non-motile female gamete and a small non-motile male gamete
Pancreatic duct of a healthy dog is blocked. Which of the functions of pancreas will not be affected ?
Protein digestion
Carbohydrate digestion
Neutralization of chyme
Maintenance of normal blood sugar level
