26. Regarding Meiosis, which of the
statements is incorrect?
(1) Pairing of homologous chromosomes and
recombination occurs in Meiosis-I
(2) Four haploid cells are formed at the end
of Meiosis-II
(3) There are two stages in Meiosis, Meiosis-I
and II
(4) DNA replication occurs in S phase of
Meiosis-II
.jpg "NEET Biology 2022 - NEET Zoology Questions (25-50)")
27. Detritivores breakdown detritus into
smaller particles. This process is called:
(1) Humification
(2) Decomposition
(3) Catabolism
(4) Fragmentation
28. Which of the following is not a
connective tissue?
(1) Cartilage
(2) Neuroglia
(3) Blood
(4) Adipose tissue
29. In the taxonomic categories which hierarchical arrangement in descending order is correct in case of animals?
(1) Kingdom, Order, Class, Phylum, Family,
Genus, Species
(2) Kingdom, Order, Phylum, Class, Family,
Genus, Species
(3) Kingdom, Phylum, Class, Order, Family,
Genus, Species
(4) Kingdom, Class, Phylum, Family, Order, Genus, Species
30. Given Below are two statements:
Statement I:
Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence.
Statement II:
Restriction endonucleases cut the DNA strand a
little away from the centre of the palindromic site.
In the light of the above statements, choose
the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is
incorrect
(2) Statement I is incorrect but Statement II
is correct
(3) Both Statement I and Statement II are
correct
(4) Both Statement I and Statement II are
incorrect
31. In gene therapy of Adenosine Deaminase (ADA) deficiency, the patient requires periodic infusion of genetically engineered lymphocytes because :
(1) Lymphocyctes from patient's blood are
grown in culture, outside the body.
(2) Genetically engineered lymphocytes are not
immortal cells.
(3) Retroviral vector is introduced into these
lymphocytes.
(4) Gene isolated from marrow cells producing
ADA is introduced into cells at embryonic stages
32. Given below are two statements : one is
labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A):
Osteoporosis is characterized by decreased
bone mass and increased chance of fractures.
Reason (R):
Common cause of osteoporosis is increased
levels of estrogen.
In the light of the above statements, choose
the most appropriate answer from the options given below.
(1) (A) is correct but (R) is not correct
(2) (A) is not correct but (R) is correct
(3) Both (A) and (R) are correct and (R) is
the correct explanation of (A)
(4) Both (A) and (R) are correct but (R) is
not the correct explanation of (A)
33. At which stage of the life the oogenesis
process is initiated?
(1) Birth
(2) Adult
(3) Puberty
(4) Embryonic development stage
34. If ‘8’ Drosophila in a laboratory population of ‘80’ died during a week, the death rate in the population is ______ individuals per Drosophila per week.
(1) 1.0
(2) zero
(3) 0.1
(4) 10
35. Given below are two statements:
Statement I:
Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.
Statement II:
Rheumatoid arthritis is a condition where body
does not attack self cells.
In the light of the above statements, choose
the most appropriate answer from the options given below:
(1) Statement I is correct but Statement II is
incorrect
(2) Statement I is incorrect but Statement II
is correct
(3) Both Statement I and Statement II are
correct
(4) Both Statement I and Statement II are
incorrect
36. The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome?
(1) a, b, c, d
(2) a, c, b, d
(3) a, d, b, c
(4) d, b, a, c
37. Match List-I with List-II
List-I (Biological Molecules) List-II (Biological functions)
(a) Glycogen (i) Hormone
(b) Globuline (ii) Biocatalyst
(c) Steroids (iii) Antibody
(d) Thrombin (iv) Storage product
Choose the correct answer from the options
given below:
(1) (a) - (ii), (b) - (iv), (c) - (iii), (d) - (i)
(2) (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
(3) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i)
(4) (a) - (iv), (b) - (ii), (c) - (i), (d) - (iii)
38. Which of the following are not the
effects of Parathyroid hormone?
(a) Stimulates the process of bone resorption
(b) Decreases Ca2+ level in blood
(c) Reabsorption of Ca2+ by renal tubules
(d) Decreases the absorption of Ca2+ from
digested food
(e) Increases metabolism of carbohydrates
Choose the most appropriate answer from the
options given below:
(1) (a) and (e) only
(2) (b) and (c) only
(3) (a) and (c) only
(4) (b), (d) and (e) only
39. Which of the following is not a desirable
feature of a cloning vector?
(1) Presence of single restriction enzyme site
(2) Presence of two or more recognition sites
(3) Presence of origin of replication
(4) Presence of a marker gene
40. Match List-I with List-II with respect to
methods of Contraception and their respective actions.
List-I List-II
(a) Diaphragms (i) Inhibit ovulation and
Implantation
(b) Contraceptive Pills (ii) Increase
phagocytosis of sperm within Uterus
(c) Intra Uterine Devices (iii) Absence of
Menstrual cycle and ovulation following parturition
(d) Lactational Amenorrhea
(iv) They cover the cervix blocking the entry of sperms . Choose the correct answer from the options given below:
(1) (a) - (ii), (b) - (iv), (c) - (i), (d) -
(iii)
(2) (a) - (iii), (b) - (ii), (c) - (i), (d) -
(iv)
(3) (a) - (iv), (b) - (i), (c) - (iii), (d) -
(ii)
(4) (a) - (iv), (b) - (i), (c) - (ii), (d) -
(iii)
41. If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness?
(1) 75%
(2) 100%
(3) 25%
(4) 50%
42. Which of the following statements is not
true?
(1) Homology indicates common ancestry
(2) Flippers penguins and dolphins are a pair
of homologous organs
(3) Analogous structures are a result of
convergent evolution
(4) Sweet potato and potato is an example of
analogy
43. Which of the following is a correct
statement?
(1) Slime moulds aer saprophytic organisms
classified under Kingdom Monera.
(2) Mycoplasma have DNA, Ribosome and cell
wall.
(3) Cyanobacteria are a group of autotrophic
organisms classified under kingdom Monera.
(4) Bacteria are exclusively heterotrophic
organisms.
44. Select the incorrect statement with
respect to acquired immunity.
(1) Anamnestic response is due to memory of
first ecounter.
(2) Acquired immunity is non-specific type of
defense present at the time of birth.
(3) Primary response is produced when our body
encounters a pathogen for the first time.
(4) Anamnestic response is elicited on
subsequent encounters with the same pathogen.
45. Match List-I with List-II
List-I List-II
(a) Bronchioles (i) Dense Regular Connective
Tissue
(b) Goblet Cell (ii) Loose Connective Tissue
(c) Tendons (iii) Glandular Tissue
(d) Adipose Tissue (iv) Ciliated Epithelium
Choose the correct answer from the options
given below:
(1) (a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)
(2) (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
(3) (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
(4) (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
46. Statements related to human Insulin are
given below.
Which statement(s) is/are correct about
genetically engineered Insulin?
(a) Pro-hormone insulin contain extra stretch
of C-peptide
(b) A-peptide and B-peptide chains of insulin were produced separately in E.coli, extracted and combined by creating disulphide bond between them.
(c) Insulin used for treating Diabetes was
extracted from Cattles and Pigs.
(d) Pro-hormone Insulin needs to be processed
for converting into a mature and functional hormone.
(e) Some patients develop allergic reactions
to the foreign insulin.
Choose the most appropriate answer from the
options given below:
(1) (c) and (d) only
(2) (c), (d) and (e) only
(3) (a), (b) and (d) only
(4) (b) only
47. Given below are two statements:
Statements I :
In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II :
Particulate matter (PM 2.5) can not be removed by scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose
the most appropriate answer from the options given below :
(1) Statement I is correct but Statement II is
incorrect
(2) Statement I is incorrect but Statement II
is correct
(3) Both Statement I and Statement II are
correct
(4) Both Statement I and Statement II are
incorrect
48. Ten E.coli cells with 15N - dsDNA are incubated in medium containing 14N nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from 15N?
(1) 60 cells
(2) 80 cells
(3) 20 cells
(4) 40 cells
49. Select the incorrect statement regarding
synapses :
(1) Chemical synapses use neurotransmitters
(2) Impulse transmission across a chemical synapse is always faster than that across an electrical synapse.
(3) The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.
(4) Electrical current can flow directly from
one neuron into the other across the electrical synapse.
50. Which one of the following statements is
correct?
(1) Blood moves freely from atrium to the
ventricle during joint diastole.
(2) Increased ventricular pressure causes
closing of the semilunar valves.
(3) The atrio-ventricular node (AVN) generates
an action potential to stimulate atrial contraction
(4) The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
Answer:
26. (4) DNA replication occurs in S phase of Meiosis-II
27. (4) Fragmentation
28. (2) Neuroglia
29. (3) Kingdom, Phylum, Class, Order, Family, Genus, Species
30. (3) Both Statement I and Statement II are correct
31. (2) Genetically engineered lymphocytes are not immortal cells.
32. (1) (A) is correct but (R) is not correct
33. (4) Embryonic development stage
34. (3) 0.1
35. (1) Statement I is correct but Statement II is incorrect
36. (2) a, c, b, d
37. (2) (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
38. (4) (b), (d) and (e) only
39. (2) Presence of two or more recognition sites
40. (4) (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
41. (2) 100%
42. (2) Flippers penguins and dolphins are a pair of homologous organs
43.
44. (2) Acquired immunity is non-specific type of defense present at the time of birth.
45. (3) (a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
46. (4) (b) only
47. (2) Statement I is incorrect but Statement II is correct
48. (1) 60 cells
49. (2) Impulse transmission across a chemical synapse is always faster than that across an electrical synapse.
50. (1) Blood moves freely from atrium to the ventricle during joint diastole.