If due to some injury the chordate tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

• The flow of blood into the aorta will be slowed down

• The ‘pace maker’ will stop working

• The blood will tend to flow back into the left atrium

• The flow of blood into the pulmonary artery will be reduced

Haemoglobin is

• An oxygen carrier in human blood

• A protein used as a food supplement

• An oxygen scavenger in root nodules

• A plant protein with high lysine content

Match the enzyme in column I with its function in column II and choose the correct option.

• A-2, B-1, C-4, D-3

•  A-3, B-2, C-1, D-4

• A-2, B-4, C-1, D-3

•  A-1, B-2, C-4, D-3

Consider the following statements with two blanks X and Y and select the option which correctly fills up these blanks.

In the centre of the intervertebral disc, a soft area is present called ….X….....

Which is supposed to be remnant of …. Y....

• X-Nucleus pulposus ,         Y-Nerve cord

• X-Centrum,         Y-Noto cord

• X-Nucleus pulposus,         Y-Noto cord

•  X-Centrum,         Y-Nerve cord

 In the central nervous system, myelinated fibres form the ….., while the non-myelinated fibre cells form the ……

• Grey matter, white matter

• White matter, grey matter

• Ependymal cells, neurosecretory cells

• Neurosecretory cell, ependymal cells

Many elements are found in living organisms either free or in form of compounds. One of the following is negligible is living organisms

• Silicon

• Magnesium

• Iron

• Sodium

The structure present in all adult vertebrates is

• Notochord

• Dorsal tubular nerve cord

• Pharyngeal gill slits

• All of these

Six highly chitinous plate-like teeth are found in ……. of cockroach

• Mandible

• Gizzard

• Mexilla

• Rectum

Which of the following tissue is a vascular?

• Cowpait bone

• Skeletal muscle

• Stratified squamous epithelium

• Adipose tissue

Which of the following represent uridylic acid?

• Uracil + Ribose

• Uridine + Phosphoric acid

• Uracil + Phosphoric acid

• Uridine + Ribose + Phosphoric acid