Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature? 

• Liver fluke, Sea anemone, Sea cucumber - Bilateral symmetry

• Centipede, prawn, sea urchin - Jointed appendages

• Scorpion, spider, cockroach - Ventral solid central nervous system

• Scorpion, spider, cockroach - Ventral solid central nervous system

Which one of the following phyla is correctly matched with its two general characteristics? 

• Arthropoda - Body divided into head, thorax and abdomen and respiration by tracheae.

• Chordata - Notochord at some stage and separate anal and urinary openings to the outside

• Echinodermata - Pentamerous radial symmetry and mostly internal fertilisation

• Echinodermata - Pentamerous radial symmetry and mostly internal fertilisation

Which one of the following is not a characteristic of phylum-Annelida?

• Closed circulatory system

• Segmentation

• Pseudocoelom

• Pseudocoelom

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes  that Adenosine Triphosphate (ATP) is formed because

• High energy bonds are formed in mitochondrial proteins

• ADP is pumped out of the matrix into the intermembrane space

• a proton gradient forms across the inner membrane

• a proton gradient forms across the inner membrane

Which one of the following is resistant to enzyme action? 

• Cork 

• Wood fibre

• Pollen exine

• Pollen exine

In humans, blood passes f from the post caval to the diastolic right atrium of heart due to 

• Pushing open of the venous valves

• suction pull

• Stimulation of the sino-auricular node

• Stimulation of the sino-auricular node

Which one of the following is the true description of an animal concerned?

• Earthworm - The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine.

• Frog - Body divisible into three regions- head, neck and trunk

• Rat - Left kidney is slightly higher in position that the right one

• Rat - Left kidney is slightly higher in position that the right one

In germinating seeds fatty acids are degraded exclusively in the

• proplastid

• glyoxisomes

• peroxisomes

• peroxisomes

Which one of the following pair of items correctly belongs to the category of organs mentioned against it? 

• Thorn of  Bougainvillea and tendrils of Cucurbita - Analogous organs

• Nictitating membrane and blind spot in human eye - Vestigial organs

• Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

• Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

Consider the following statements about biomedical technologies

A) During open heart, surgery blood is circulated in the heart -lung machine.

B) Blockage in coronary arteries has removed an angiography.

C) Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of the body.

D) X -ray provides clear and detailed images of organs like prostate glands and lungs.

Which two of the above statements are correct? 

• B and D

• C and D

• A and C

• A and C