KPSC/KAS/PSI/FDA Exam Biology MCQs Part-2
51.Consider the following statements:
Assertion (A): In humans, female sex is determined by XX-chromosomes.
Reason (R): Male sex is determined by YY-chromosomes.
Codes:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true, but R is false.
(d) A is false, but R is true.
52.Consider the following statements:
Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules.
Reason (R): DNA fragments can be manipulated from restriction endonucleases and DNA ligases.
Codes:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true, but R is false.
(d) A is false, but R is true.
53.Consider the following statements:
Assertion (A): ‘DNA fingerprinting’ has become a powerful tool to establish paternity and identity of criminals in rape and assault cases.
Reason (R): Trace evidences, such as hairs, saliva and dried semen, are adequate for DNA analysis.
Codes:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true, but R is false.
(d) A is false, but R is true.
54.Match the following columns:
| Type of blood cells | Function |
| Neutrophils | Heparin and histamine secretion |
| Basophils | Antibodies formation |
| Acidophils | Scavenger |
| Monocytes | Phagocytes |
| Lymphocytes | Antiallergic and healing wounds |
Codes
A B C D E
(a) 3 1 5 4 2
(b) 1 4 5 3 2
(c) 3 2 1 4 5
(d) 2 3 1 4 5
55.Consider the following statements and choose the correct code.
Assertion (A): A true nucleus is absent in E. coli and other prokaryotes.
Reason (R): An undifferentiated, unorganised fibrillar chromosome exists inside the prokaryotic cells. Codes:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is false, but R is true.
(d) Both A and R are false.
56.Consider the following statements and choose the correct code.
Assertion (A): Regeneration in animals is one of the strategies to escape predation.
Reason (R): These strategies include the rearrangement of pre-existing tissue.
Codes:
- Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
- A is false, but R is true.
(d) Both A and R are false.
57. Match List-I with List-II and select the correct answer by using the codes given below:
List-I List-II
A. Ribosome 1. Suicidal bag of cells
B. Lysosome 2. Protein factory of cells
C. Mitochondria 3. Controller of cell
D. Nucleus 4. Powerhouse of cell
Codes:
A B C D
(a) 2 1 4 3
(b) 4 3 2 1
(c) 1 4 3 2
(d) 3 2 1 4
58.Which of the following is the correct sequence of the different phases of cell division?
1. Anaphase
2. Telophase
3. Prophase
4. Metaphase
Codes:
(a) 1, 2, 3, 4
(b) 1, 3, 2, 4
(c) 3, 1, 4, 2
(d) 3, 4, 1, 2
59.Match List-I with List-II and select the correct answer by using the codes given below;
List-I (Physiological processes) List-II (Cell organelles)
A. Photosynthesis 1. Plasma membrane
B. Mineral uptake 2. Chloroplast
C. Respiration 3. Mitochondria
D. Protein synthesis 4. Ribosomes
Codes:
A B C D
(a) 1 2 3 4
(b) 1 2 4 3
(c) 2 1 3 4
(d) 2 1 4 3
60.Which of the following is not a true statement about chloroplasts and mitochondria?
(a) Each contains a small amount of DNA
(b) Neither are components of the endomem-brane system
(c) Both are membrane less organelles
(d) Mitochondria do not synthesise all their proteins
61.Match List-I with List-II and select the correct answer from the codes given below:
List-I (Blood Group) List-II (Anti body)
A. A 1. Plasma membrane
B. B 2. Chloroplast
C. AB 3. Mitochondria
D. O 4. Ribosomes
Codes:
A B C D
(a) 1 2 3 4
(b) 4 3 2 1
(c) 4 2 3 1
(d) 3 4 2 1
62.Which of the following statements are correct about the functions of the blood?
1. Transportation of oxygen.
2. Transportation of hormones.
3. Control of body temperature.
4. Excessive bleeding.
Codes:
(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 2 and 3
(d) 1, 2, 3 and 4
63.Consider the following statements and select the correct answer from the codes given below:
1. In DNA, the base adenine, guanine, thymine and cytosine are found.
2. The nucleus contains all the DNAs of a cell.
3. In RNA, thymine is replaced with uracil.
4. RNA is mainly found to be in the cytoplasm. Codes:
(a) 1, 2 and 3
(b) 2 and 3 only
(c) 1 and 4 only
(d) 1, 2, 3 and 4
64.Match List-I with List-II and select the correct answer from the codes given below:
List-I (Organisms) List-II (Chromosomes in pair)
A. Human 1. 6
B. Housefly 2. 23
C. Mosquito 3. 39
D. Dog 4. 3
Codes:
A B C D
(a) 2 1 4 3
(b) 4 3 2 1
(c) 3 4 1 2
(d) 4 3 1 2
65.With reference to the animal cell, which of the following statements are correct?
1. There is no cell wall in animal cell but the cell is covered by plasma membrane.
2. Chlorophyll is not found in animal cells.
3. Lysosome occurs in plant cells.
4. Almost in all animal cells, centrioles exist.
Codes:
(a) 2 and 3 only
(b) 1, 2 and 3 only
(c) 1, 2 and 4
(d) All of the above
Directions (Qs. 66) : The following questions items consist of two statements, statement I and statement II. You are to examine these two statements carefully and select the answers to these items using the code given below.
Code :
(a) Both the statements are individually true and statement II is the correct explanation of statement I
(b) Both the statements are individually true but statement II is not the correct explanation of statement I
(c) Statement I is true but statement II is false
(d) Statement I is false but statement II is true
66. Statement I : Red blood cells burst when placed in water.
Statement II : Due to the phenomenon of osmosis water enters into red blood cells.
67.Consider the following statements regarding osmosis in animal cells :
1. If the water potential of the solution surrounding the cell is too high, the cell shrinks.
2. If the water potential of the solution surrounding the cell is too low, the cell swells and bursts.
3. It is important to maintain a constant water potential inside the animal body.
4. In animal cells, water potential far exceeds the solute potential.
Which of the statements given above is/are correct?
(a) 1 and 2
(b) 3 only
(c) 4 only
(d) 2 and 3
68.Consider the following respiratory pigments :
(1) Haemoglobin
(2) Hemocyanin
(3) Hemerythrin
(3) Haemocynoglobin
Iron is contained in :
(a) 1, 2, 3 and 4
(b) 1 and 3
(c) 1 and 2
(d) 1, 2 and 4
69.A drop of blood contains.
(a) about 10,000 cells
(b) about 100,000 cells
(c) several million cells
(d) less than 25,000 cells
70.Human blood contains ________ plasma.
(a) 35%
(b) 40%
(c) 50%
(d) 55%
71.Biologically, marriage should be avoided in between
(a) Rh+ male and Rh+ female
(b) Rh– female and Rh– male
(c) Rh+ female and Rh– male
(d) Rh+ male and Rh– female
72.A disorder which is linked to the Y chromosome in humans (holandric) will
(a) only be expressed in males whose mothers were a carrier of the gene
(b) never be passed from father to child
(c) show a pattern of skipping generations in a family
(d) be passed only from father to son
73.Normal adult human male has
(a) 10 g of haemoglobin/100 g of blood
(b) 14 g of haemoglobin/100 g of blood
(c) 18 g of haemoglobin/100 g of blood
(d) 24 g of haemoglobin/100 g of blood
74.New species may be formed if
(i) DNA undergoes significant changes in germ cells
(ii) chromosome number changes in the gamete
(iii) there is no change in the genetic material
(iv) mating does not take place
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii), (iii) and (iv)
(d) (i), (ii) and (iii)
75.Select the incorrect statement
(a) Frequency of certain genes in a population change over several generations resulting in evolution
(b) Reduction in weight of the organism due to starvation is genetically controlled
(c) Low weight parents can have heavy weight progeny
(d) Traits which are not inherited over generations do not cause evolution
76.Select the statements that describe characteristics of genes
(i) genes are specific sequence of bases in a DNA molecule
(ii) a gene does not code for proteins
(iii) in individuals of a given species, a specific gene is located on a particular chromosome
(iv) each chromosome has only one gene
(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)
77. Which of the following fights infection in the body? [Bihar J. Service 2016]
(a) RBC
(b) WBC
(c) Blood plasma
(d) Haemoglobin
78. The sex of a new born baby is determined by the chromosome inherited from –
(a) The mother
(b) The father
(c) Mother’s father
(d) Father’ father
79. Which of the following is responsible for controlling hereditary characters of the living cells? [BPSC 2017]
(a) Enzyme
(b) Hormone
(c) RNA (d)DNA
(e) None of the above / More than one of the above
80. Gene is –[UK-PSC 2016]
(a) A segment of DNA
(b) A segment of DNA and histone
(c) A segment of DNA, RNA and histone
(d) All of the above
81. The living content of cell is called protoplasm. It is composed of :[CDS 2016-I]
(a) Cytoplasm only
(b) Cytoplasm and myoplasm
(c) Nucleoplasm only
(d) Cytoplasm, nucleoplasm and other organelles
82. Genetic screening is[CDS 2015-II]
(a) analysis of DNA to check the presence of a particular gene in a person
(b) analysis of gene in a population
(c) pedigree analysis
c(d) screening of infertility in parents
83. Which of the following cause(s) variation in the genetic material of progeny?[CDS 2015-II] 1.Sexual reproduction
2.Asexual reproduction
3.Mutations
4.Epigenetic changes Select the correct answer using the code given below.
(a) 2 only
(b) 1, 2 and 3
(c) 1, 3 and 4
(d) 1 and 3 only
84. Neutrophils and lymphocytes originate from [CDS 2015-II]
(a) kidney tubule
(b) spleen
(c) bone marrow
(d) lymph node
85. A mother of blood group O has a group O child. What could be the blood group of father of the child? [NDA 2007 – II]
(a) Only O
(b) A or B or O
(c) A or B
(d) Only AB
86. Which of the following part of blood carry out the function of body defence?[NDA 2008 I] (a) Red blood cells
(b) White blood cells
(c) Platelets
(d) Haemoglobins
87.Assertion (A): Red blood cells burst when placed in water.
Reason (R): Due to osmosis, water enters into red blood cells.[NDA 2008- II]
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
88. Between which one of the following sets of blood groups, is the blood transfusion possible?[NDA 2008 – II]
(a) A and O
(b) B and A
(c) A and AB
(d) AB and O
89. White blood cells act[NDA 2011 – I]
(a) as a defence against infection
(b) as source of energy
(c) as a clotting agent
(d) as a medium for oxygen transport from lungs to tissues Plant Anatomy/ Physiology
90. In which of the following chlorophyll does not exist?
(a) Algae
(b) Fungi
(c) Bryophytes
(d) Pteridophytes
91. The age of trees is estimated by
(a) their heights
(b) their weights
(c) their elongation of roots
(d) counting the number of annual rings
92. Which of the following gas is necessary for the process of photosynthesis?
(a) O2
(b) CO
(c) N2
(d) CO2
93. Which of the following metals is found in the chlorophyll?
(a) Iron
(b) Magnesium
(c) Zinc
(d) Cobalt
94. The gas released during the photosynthesis by the green plants is
(a) Oxygen
(b) Nitrogen
(c) Water vapour
(d) Carbon dioxide
95. The photosynthesis occurs in the
(a) Day
(b) Night
(c) Day and Night
(d) None of these
96. The process of evaporation occurs from
(a) Root
(b) Stem
(c) Leaf
(d) Entire ‘plants’ surface
97. At which region of the electromagnetic spectrum do the plants photosynthesis?
(a) Red and Blue
(b) Green and Yellow
(c) Blue and Orange
(d) Violet and Orange
98. Which of the following is the cellular respiratory centre?
(a) Nucleus
(b) Mitochondria
(c) Ribosome
(d) Golgi body
99. Which of the following is a plant hormone?
(a) Adrenaline
(b) Insulin
(c) Oxytocin
(d) Auxin
100. The water and mineral salts are transported to the various organs by which of the following?
(a) Xylem
(b) Phloem
(c) Cortex
(d) Cambium