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NEET Biology Solved Question Paper 2006

Multiple Choice Questions

Given below is a table comparing the effects of sympathetic and parasympathetic nervous system
for four feature (a-d). Which one feature is correctly described

Feature Sympathetic nervous system Parasympathetic nervous system

a) Salivary glands Stimulate Secretion Inhibit Secretion
b) Pupil of the eye Dilate Constricts
c) Heart rate Decreases Increases
d) Intestinal peristalsis Stimulates Inhibits

Which one of the following animals is correctly matched with its one characteristic and the taxon

Animal Characteristic Taxon

Millipede Ventral nerve cord Arachnida
Duckbill platypus Oviparous Mammalia
Silverfish Pectoral and pelvic fin Chordata
Sea anemone Triploblastic Cnidaria

All mammals without any exception are characterised by

viviparity and biconcave red blood cells
extra-abdominal testes and a four chambered heart
heterodont teeth and 12 pairs of cranial nerves
a muscular diaphragm and milk producing
glands.

Which one of the following pairs of the kind of cells and their secretion is correctly matched

Oxyntic cells a secretion with pH between 2.0 and 3.0
Alpha cells of islets of Langerhans secretion that decreases blood sugar level
Kupffer cells a digestive enzyme that hydrolyses nucleic acids
Sebaceous glands a secretion that evaporates for cooling

Examine the diagram of the two cell types A and B given below and select the correct option

A B

Cell A is the rod cell found evenly all over retina
Cell A is the cone cell more concentrated in the fovea central is
Cell B is concerned with colour vision in bright light
Cell A is sensitive to low light intensities

6.
A cricket player is fast chasing a ball in the field. Which one of the following groups of bones are directly contributing in this movement

Femur, malleus, tibia, metatarsals

Pelvis, ulna, patella, tarsals

Sternum, femur, tibia, fibula

Tarsals, femur, metatarsals, tibia

Tarsals, femur, metatarsals, tibia

Tarsal- Tarsal, any of several short, angular bones that in humans make up the ankle and that—in animals that walk on their toes (e.g., dogs, cats) or on hoofs—are contained in the hock, lifted off the ground. The tarsals correspond to the carpal bones of the upper limb.

Femur- Femur, also called thighbone, or hind leg. The head forms a ball and socket with the hip (at the acetabulum), being held in place by a ligament (ligamentum teres femoris) within the socket and by strong surrounding ligaments.

Metatarsals- Anatomical terms of bone. The metatarsal bones, or metatarsus are a group of five long bones in the foot, located between the tarsal bones of the hind- and mid-foot and the phalanges of the toes

Tibia- The tibia, also known as the shinbone or shankbone, is the larger, stronger, and anterior (frontal) of the two bones in the leg below the knee in vertiberates (the other being the fibula, behind and to the outside of the tibia), and it connects the knee with the ankle bones.

A lizard-like member of reptilia is sitting on a tree with its tail coiled around a twig. This animal could be

Hemidactylus showing sexual dimorphism
Varamus showing mimicry
garden lizard (Calotes) showing camouflage
Chamaeleon showing protective colouration

The figure given below shows three velocity substrate concentration curves for an enzyme reaction. What do the curves a, b, and c depict respectively

a-normal enzyme reaction,
b-competitive inhibition,
c-non-competitive inhibition.
a-enzyme with an allosteric modulator added,
b-normal enzyme activity,
c-competitive inhibition
a-enzyme with an allosteric stimulator,
b-competitive inhibition added
c-normal enzyme reaction
a-normal enzyme reaction,
b-non-competitive inhibitor added
c-allosteric inhibitor added