NEET-XII-Biology
E1 year:2020
Note: Please signup/signin free to get personalized experience.
Note: Please signup/signin free to get personalized experience.
10 minutes can boost your percentage by 10%
Note: Please signup/signin free to get personalized experience.
- Qstn #16Which of the following statements about inclusion
bodies is incorrect ?
(1) They are not bound by any membrane.
(2) These are involved in ingestion of food
particles.
(3) They lie free in the cytoplasm.
(4) These represent reserve material in
cytoplasm.digAnsr: 2Ans : 2
- Qstn #17Which is the important site of formation of
glycoproteins and glycolipids in eukaryotic cells ?
(1) Endoplasmic reticulum
(2) Peroxisomes
(3) Golgi bodies
(4) PolysomesdigAnsr: 3Ans : 3
- Qstn #18In gel electrophoresis, separated DNA fragments
can be visualized with the help of :
(1) Acetocarmine in bright blue light
(2) Ethidium bromide in UV radiation
(3) Acetocarmine in UV radiation
(4) Ethidium bromide in infrared radiationdigAnsr: 2Ans : 2
- Qstn #19Identify the wrong statement with reference to
transport of oxygen.
(1) Binding of oxygen with haemoglobin is
mainly related to partial pressure of ``\ce{``\ce{``\ce{O2}``}``}``
(2) Partial pressure of ``\ce{C``\ce{``\ce{O2}``}``}``
can interfere with``\ce{``\ce{``\ce{O2}``}``}``
binding with haemoglobin.
(3) Higher ``\ce{H+}`` conc. in alveoli favours the
formation of oxyhaemoglobin.
(4) Low p``\ce{CO}``
2
in alveoli favours the formation
of oxyhaemoglobin.digAnsr: 3Ans : 3
- Qstn #20Ray florets have :
(1) Inferior ovary
(2) Superior ovary
(3) Hypogynous ovary
(4) Half inferior ovarydigAnsr: 1Ans : 1
- Qstn #21The specific palindromic sequence which is
recognized by EcoRI is :
(1) 5' - GAATTC - 3'
3' - CTTAAG - 5'
(2) 5' - GGAACC - 3'
3' - CCTTGG - 5'
(3) 5' - CTTAAG - 3'
3' - GAATTC - 5'
(4) 5' - GGATCC - 3'
3' - CCTAGG - 5'digAnsr: 1Ans : 1
- Qstn #22Identify the wrong statement with regard to
Restriction Enzymes.
(1) Each restriction enzyme functions by
inspecting the length of a DNA sequence.
(2) They cut the strand of DNA at palindromic
sites.
(3) They are useful in genetic engineering.
(4) Sticky ends can be joined by using DNA
ligases.digAnsr: 4Ans : 4
- Qstn #23Which of the following is put into Anaerobic sludge
digester for further sewage treatment ?
(1) Primary sludge
(2) Floating debris
(3) Effluents of primary treatment
(4) Activated sludgedigAnsr: 4Ans : 4
- Qstn #24Select the correct events that occur during
inspiration.
-(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases
(1) -(a) and (b)
(2) (c) and (d)
(3) -(a), (b) and (d)
(4) only (d)digAnsr: 1Ans : 1
- Qstn #25If the head of cockroach is removed, it may live for
few days because :
(1) the supra-oesophageal ganglia of the
cockroach are situated in ventral part of
abdomen.
(2) the cockroach does not have nervous system.
(3) the head holds a small proportion of a nervous
system while the rest is situated along the
ventral part of its body.
(4) the head holds a 1/3rd of a nervous system
while the rest is situated along the dorsal
part of its body.digAnsr: 3Ans : 3
- Qstn #26Which of the following statements are true for
the phylum-Chordata ?
-(a) In Urochordata notochord extends from
head to tail and it is present throughout
their life.
(b) In Vertebrata notochord is present during
the embryonic period only.
(c) Central nervous system is dorsal and
hollow.
(d) Chordata is divided into 3 subphyla :
Hemichordata, Tunicata and
Cephalochordata.
(1) (d) and (c)
(2) (c) and -(a)
(3) -(a) and (b)
(4) (b) and (c)digAnsr: 4Ans : 4
- Qstn #27Match the organism with its use in biotechnology.
-(a) Bacillus thuringiensis (i) Cloning vector (b) Thermus aquaticus (ii) Construction of first rDNA molecule (c) Agrobacterium tumefaciens (iii) DNA polymerase (d) Salmonella typhimurium (iv) Cry proteins
Select the correct option from the following :
-(a) (b) (c) (d)
(1) (ii) (iv) (iii) (i)
(2) (iv) (iii) (i) (ii)
(3) (iii) (ii) (iv) (i)
(4) (iii) (iv) (i) (ii)digAnsr: 2Ans : 2
- Qstn #28Match the following concerning essential elements
and their functions in plants :
-(a) Iron (i) Photolysis of water
(b) Zinc (ii) Pollen germination
(c) Boron (iii) Required for chlorophyll
biosynthesis
(d) Manganese (iv) IAA biosynthesis
Select the correct option :
-(a) (b) (c) (d)
(1) (ii) (i) (iv) (iii)
(2) (iv) (iii) (ii) (i)
(3) (iii) (iv) (ii) (i)
(4) (iv) (i) (ii) (iii)digAnsr: 3Ans : 3
- Qstn #29Identify the incorrect statement.
(1) Heart wood does not conduct water but gives
mechanical support.
(2) Sapwood is involved in conduction of water
and minerals from root to leaf.
(3) Sapwood is the innermost secondary xylem
and is lighter in colour.
(4) Due to deposition of tannins, resins, oils etc.,
heart wood is dark in colour.digAnsr: 3Ans : 3
- Qstn #30Match the following :
-(a) Inhibitor of catalytic (i) Ricin
activity
(b) Possess peptide bonds (ii) Malonate
(c) Cell wall material in (iii) Chitin
fungi
(d) Secondary metabolite (iv) Collagen
Choose the correct option from the following :
-(a) (b) (c) (d)
(1) (ii) (iv) (iii) (i)
(2) (iii) (i) (iv) (ii)
(3) (iii) (iv) (i) (ii)
(4) (ii) (iii) (i) (iv)digAnsr: 1Ans : 1