KPSC/KAS/PSI/FDA Exam Biology MCQs Part-1
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1. Blood cells do not shrink in blood because blood is
(a)hypertonic
(b)isotonic
(c)equimolar
(d)hypotonic
2. Xylem tissue is mainly concerned with the
(a)Photosynthesis of plants
(b)Transport of water and mineral nutrients in plants
(c)Storage of prepared foods in plants
(d)Transport of enzymes in plants
3.Antigen is a substance which
(a)lowers body temperature
(b)destroys harmful bacteria
(c)triggers the immune system
(d)is used as an antidote to poison
4.Which organelle in the cell, other than nucleus contains DNA ?
(a)Centriole
(b)Golgi apparatus
(c)Lysosome
(d)Mitrochondrion
5.When one gene controls two or more different characters simultaneously, the phenomenon is called
(a)Apomixis
(b)Pleiotropy
(c)Polyploidy
(d)Polyteny
6.Which of the following does not have any enzymes in its cells ?
(a)Algae
(b)Virus
(c)Lichen
(d)Bacteria
7.Which of the following has the largest number of chromosomes ?
(a)Human beings
(b)Pteridophytes
(c)Elephants
(d)Bryophytes
8.The phenomenon of genetic mutation can not occur in
(a)DNA
(b)RNA
(c)chromosome
(d)ribosome
9.The main function of the Golgi body is
(a)respiration
(b)to begin cell division
(c)to produce gastric juice
(d)secretion
10.Which of the following blood group is called universal donor ?
(a)A+
(b)B+
(c)O+
(d)AB+
11.In plants, which one of the following tissues is dead ?
(a)Parenchyma
(b)Collenchyma
(c)Sclerenchyma
(d)Phloem
12.Which one of the following is considered as a cell within a cell ?
(a)Ribosome
(b)Chloroplast
(c)Lysosome
(d)Golgi complex
13.Which of the following contain enzymes for cellular respiration?
(a)Dictyosomes
(b)Endoplasmic reticulum
(c)Lysosomes
(d)Mitochondria
14.Which one among the following cell organelles is semi-permeable?
(a)Cell membrane
(b)Plasma membrane
(c)Cell wall
(d)Nucleus
15.Which one among the following nutrients is a structural component of the cell wall of plants?
(a)Manganese
(b)Potassium
(c)Phosphorus
(d)Calcium
16.Certain parts of a plant can be bent easily without breaking. This flexibility in certain parts, like leaf and stem, can be attributed to the abundance of
(a)parenchyma
(b)collenchyma
(c)sclerenchyma
(d)xylem and phloem
17.In which one of the following antibody formations formations takes place?
(a)RBCs
(b)Blood Platelets
(c)Blood Plasma cells
(d)Donnan’s membrane
18.An individual whose blood type is B may in an emergency, donate blood to a person whose blood type is
(a)B or A
(b)AB or A
(c)A or O
(d)AB or B
19.Carbohydrates are stored in plants and animals in the form of
(a)cellulose and glucose respectively
(b)starch and glycogen respectively
(c)starch and glucose respectively
(d)cellulose and glycogen respectively
20.Which of the following groups is present in animal cells? (a)Mitochondria, Cell membrane, Cell wall, Cytoplasm
(b)Chloroplasts, Cytoplasm, Vacuole, Nucleus
(c)Nucleus, Cell membrane, Mitochondria, Cytoplasm
(d)Vacuole, Cell membrane, Nucleus, Mitochondria
21.Average life span of human R.B.C is
(a)100 days
(b)90 days
(c)120 days
(d)None of these
22.Cells which takes part in secondary growth are named as
(a)phloem
(b)xylem
(c)cambium
(d)medullary ray
23.Blood and lymph are types of
(a)muscular tissue
(b)epithelial tissue
(c)connective tissue
(d)permanent tissue
24.Which one of the following is not a constituent of cell membrane?
(a)Cholesterol
(b)Glycolipids
(c)Proline
(d)Phospholipids
25.The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
(a)S-phase
(b)G1-phase
(c)G2-phase
(d)M-phase
26.During which stage of mitosis does cytokinesis usually occur in animals?
(a)Prophase
(b)Metaphase
(c)Anaphase
(d)Telophase
27.Which of the following substances if introduced in the blood stream would cause coagulation at the site of its introduction?
(a)Fibrinogen
(b)Prothrombin
(c)Heparin
(d)Thromboplastin
28.Lysosome arises from
(a)endoplasmic reticulum
(b)golgi apparatus
(c)nucleus
(d)mitochondria
29.pH of human blood is
(a)7.4
(b)6.2
(c)9.0
(d)7.5 – 8.0
30.The double helix model of Watson and Crick is known as
(a)C-DNA
(b)B-DNA
(c)Z-DNA
(d)D-DNA
31.The correct sequence of cell cycle is
(a)S, Gl, G2, M
(b)S, M, Gl, G2
(c)Gl, S, G2, M
(d)M, Gl, G2, S
32.Biological membranes are composed of
(a)40% proteins and 60% lipids
(b)50% proteins and 50% lipids
(c)70% proteins and 30% lipids
(d)60% proteins and 40% lipids
33.F1 particles / oxysome / elementary particles are present in
(a)endoplasmic reticulum
(b)chloroplast
(c)mitochondria
(d)golgi complex
34.Which of the following is related to glycosylation of protein?
(a)Endoplasmic reticulum
(b)Peroxisome
(c)Lysosome
(d)Mitochondria
35.The function of nucleolus is the synthesis of
(a)DNA
(b)m-RNA
(c)r-RNA
(d)t-RNA
36.The shape of chromosome is clearly visible at
(a)prophase
(b)anaphase
(c)metaphase
(d)telophase
37.Chromosome start separating at which stage of mitosis
(a)early metaphase
(b)late metaphase
(c)early anaphase
(d)early telophase
38.“Endomitosis” refers to
(a)division of nucleus without chromosomal division
(b)division of chromosome without nuclear division
(c)division of cytoplasm
(d)None of the above
39.The camel’s hump is composed of a tissue. It is a type of
(a)skeletal tissue
(b)areolar tissue
(c)adipose tissue
(d)muscular tissue.
40.Peroxisomes are involved in the synthesis of
(a)glucose
(b)fatty acids
(c)glycine and serine
(d)nucleotides
41.The major constituent of connective tissue is
(a)lipid
(b)carbohydrate
(c)cholesterol
(d)collagen
42.Bone forming cells are
(a)osteoclasts
(b)osteoblasts
(c)chondroblast
(d)chondroclasts
43.When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be
(a)hypertonic
(b)isotonic
(c)hypotonic
(d)None of these
44.Smooth muscles are likely to be found in
(a)muscles of legs
(b)muscles of arms
(c)stomach
(d)heart
45.Bacteria are (were) considered more as plants than animals because of the presence of
(a)small nucleus
(b)plasma membrane
(c)cell wall
(d)spore formation
46.The kingdom Protista is primarily made up of organisms that are
(a)eukaryotic and multicellular
(b)prokaryotic and multicellular
(c)prokaryotic and single-celled
(d)eukaryotic and single-celled
47.Mesosome in a bacterial cell is
(a)plasmid
(b)connection between two cells
(c)plasma membrane infolded for respiration
(d)None of these
48.Collar cells occur in
(a)sponges
(b)hydra
(c)sandworm
(d)starfish
49.Consider the following statements:
1.Human beings have 23 pairs of chromosomes.
2.Sex chromosome in human male is named XX.
3.Chromosomes are best seen in metaphase.
Which of the statements given above are false about chromosomes?
(a)1 and 2
(b)2 only
(c)1, 2 and 3
(d)None of these
50.Consider the following statements about gene
1.Word ‘Gene’ was given by Johanssen.
2.Genes are situated on chromosomes.
3.Genes located at different locus and having different expression are multiple alleles.
Which of the statements given above are true?
(a)1 and 2
(b)2 and 3
(c)1 and 3
(d)1, 2 and 3