Multiple Choice QuestionsIn germinating seeds fatty acids are degraded exclusively in the
proplastid
glyoxisomes
peroxisomes
peroxisomes
Which one of the following is resistant to enzyme action?
Cork
Wood fibre
Pollen exine
Pollen exine
Which one of the following is not a characteristic of phylum-Annelida?
Closed circulatory system
Segmentation
Pseudocoelom
Pseudocoelom
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
D.
Stimulation of the sino-auricular node
the action of the heart includes contractions and relaxations of the atria and ventricles. Contraction of the heart is called systole and relaxation is called diastole. The dynamics of blood flows through the blood vessels is no exception and blood flow through the blood vessels along a pressure gradient, always moving from higher to lower pressure areas. Fundamentally, the pumping action of heart generated blood flow. The contraction of atria is initiated and activated by the sinoatrial node (SA node- Pacemaker), which spreads waves of contraction across the wall of atria via muscle fibres at regular intervals.
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
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 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
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
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
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
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