STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Statement I: Overproduction of hormones by adrenal cortex cause Addison's disease.
Statement II: Catecholamines are also called emergency hormones or hormones of fight or flight.

Blood exhibits coagulation or clotting in response to an injury or trauma. This is a mechanism to prevent excessive loss of blood from the body. This occurs in following steps :
(i) Clot or coagulum formed mainly of a network of threads called fibrins in which dead and damaged formed elements of blood are trapped.
(ii) Fibrins are formed by the conversion of inactive fibrinogens in the plasma by the enzyme thrombin.
(iii) Thrombins, in turn are formed from another inactive substance present in the plasma called prothrombin.
(iv) An enzyme complex thrombokinase is activated.
What is the correct sequence of clotting process ?

Mating between two individuals differing in genotye to produce genetic variation is called

Select the option which shows correct matching of animal with its excretory organ and excretory product.

Adipose tissue is found in mammals

The last major evolutionary advancement among the vascular plants was the emergence of flowering plants (angiosperms) about

Coelom is cavity between alimentary canal and body wall enclosed by

In the rib cage formation which is not used ?

Hypothalamus forms an important link between