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Instruction
- Total 17 question
- Total Marks 68
- Each Question 4 marks
- Negative marking -1 for each wrong Question
NEET CONCEPT TEST -11 | BIOLOGY | STD 11 & 12 | NEET SPECIAL
1. Why it is necessary to conserve the wildlife ?
( a ) To prevent wastage and spoilage of natural resources
( b ) To preserve biological diversity
( c ) To safeguard the environment of earth
( d ) All of these
2. Which one of the following is termed as temporary gland ?
( a ) Pineal ( b ) Thymus ( c ) Placenta ( d ) Kidney
3. Overexploitation has led to the anthropogenic extinction of
( a ) pygmy hog ( b ) dodo ( c ) woodland caribou ( d ) cichlid fish .
4. The hormone action on the same cell that produces it , is known as
( a ) juxtacrine action ( b ) paracrine action
( c ) autocrine action ( d ) homocrine action .
5. Which biosphere reserve of India is not recognised as World Heritage Sites ?
( a ) Manas ( b ) Sundarbans ( c ) Nanda Devi ( d ) Agasthyamalai
6. The biosynthesis of triacylglycerol occurs in
( a ) mitochondria ( b ) lysosome ( c ) endoplasmic reticulum ( d ) cytosol .
7. Amino acids resulting from digestion of proteins are absorbed through
( a ) hepatic portal vein ( b ) hypophyseal portal vein
( c ) mesenteric vein ( d ) ileocolic vein
8. Hot spots are characterised by
( i ) large number of endemic species
( ii ) high level of species richness
( iii ) majority of vulnerable species .
( a ) ( i ) only ( b ) ( i ) and ( iii ) only ( c ) ( iii ) only ( d ) ( i ) and ( ii ) only
9. The grey matter of spinal cord is
( i ) butterfly shaped and present outside the white matter
( ii ) grey in colour in unstained preparation
( iii ) matter lacking myelinated nerve fibres
( iv ) contains interneurons .
( a ) ( i ) and ( iii ) only ( b ) ( ii ) , ( iii ) and ( iv ) only
( c ) ( ii ) and ( iv ) only ( d ) ( i ) , ( ii ) and ( ii ) only .
10 . Which statement is correct regarding K - T extinction ?
( a ) Mass extinction between cretaceous and tertiary period .
( b ) Extinction of animals due to inability to switch over to alternate food .
( c ) Sixth extinction due to anthropogenic activities .
( d ) Extinction of species due to low reproductive potential .
11 . Which pair of nerve and organ innervation is incorrect ?
( a ) Trochlear Eye muscle
( b ) Vagus nerve Abdominal viscera
( c ) Glossopharyngeal nerve Taste buds
( d ) Hypoglossal nerve Ear muscles
12. Select the mismatched pair .
( a ) Vulnerable species Clouded leopard
( b ) Endangered species - Red panda
( c ) Vulnerable species Hawaiian monk seal
( d ) Endangered species - Mexican prairie dog
13. Which of the following is not true regarding acetyl COA ?
( a ) Fatty acids may be oxidised to acetyl - CoA by B - oxidation .
( b ) It is oxidised to CO2 + H20 via calvin cycle .
( c ) It is the precursor for synthesis of cholesterol and other steroids .
( d ) It is used to form ketone bodies in the liver .
14 . Minamata disease is caused due to the water polluted with
( a ) silver nitrate ( b ) methyl isocyanate
( c ) crude oil ( d ) dimethyl mercury .
15 . A natural phenomenon that is commonly observed in lakes , ponds and ditches where a rich growth of algae and other microorganisms consume much of the dissolved oxygen and resulting in the death of fishes . The phenomenon is termed as
( a ) litterisation ( b ) transmigration ( c ) eutrophication ( d ) estuarisation
16. Mineralocorticoids are secreted from which region of adrenal gland ?
( a ) Zona glomerulosa of adrenal cortex
( b ) Zona fasciculata of adrenal cortex
( c ) Zona reticularis of adrenal cortex
( d ) Adrenal medulla
17. Biochemical oxygen demand ( BOD ) in a river water
( a ) has no relationship with concentration of oxygen in the water
( b ) gives a measure of Salmonella in the water
( c ) increases when sewage gets mixed with river water
( d ) remains unchanged when algal bloom occurs.
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ANSWER KEY
1. ( d ) 2. ( c ) 3 . ( b ) 4 . ( c ) 5. ( d ) 6 . ( c ) 7. ( a ) 8. ( d ) 9 . ( b )
10. ( a) 11. ( d ) 12. ( c ) 13. ( b ) 14. ( d ) 15. ( c ) 16. ( a ) 17. ( c )
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