Study the following and identify the incorrect statements.

I. Muscles of the iris end ciliary body are the smooth muscles of mesodermal origin.

II. Slow and sustained involuntary contractions of smooth muscles are called spasms.

III. Quiescent mononucleate myogenic cells of skeletal muscles are called pericytes.

IV. The skeletal muscle fibre is multinucleate and is a synctium.

• I, IV

• II, IV

• III, IV

• I, III

Chylomicrons are

• micelles covered by a protein coat

• droplets along with triglycerides

• triglycerides along with monosaccharides

• glycerol droplets formed in intestine after digestion of fats

Haemocyanin pigment is found in which of the following animal group?

• Annelida

• Insects

• Lower invertebrates

• Platyheliminthes

The eggs of the amphibians are

• Mesolecithal

• Telolecithal

• Centrolecithal

• Homolecithal

15.

When all the active sites of the enzyme are occupied, how does increasing the substrate concentration affect the rate ofreaction?

• The rate of reaction will slow down

• The rate of reaction will become constant, and shows no increase

• The rate of reaction will increase with increasing substrate concentration

• The rate of reaction will become reactive in such condition

Which of the following statement is true for maculae found in the internal ear of humans?

• It is present in ampullae of semicircular ducts

• These are three in number

• Each macula contains calcarious ear stones called oto lith.

• All of above

Match the following Columns

The correct answer is

• A - ii; B - iii; C - iv; D - v

• A - v; B - ii; C - i; D - iv

• A - iv; B - iii; C - ii; D - i

• A - v; B - ii; C - iii; D - iv

Myelin sheaths

• are abundant in the nervous system of non-vertebrates

• consists largely of lipids

• has a low electric resistance

• allow the continous conduction of impulse

The disease characterised by high plasma Na⁺, low plasma K⁺ rise in blood volume and high blood pressure is

• Cushing syndrome

• Gull's disease

• Aldosteronism

• Adrenal Virilism

Clogging ofnarrowed vessels by blood clots is called

• vasoconstriction

• artherosclerosis

• thrombosis

• stroke