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SSC CGL 2012 Discussion Question And Answer

SSC CGL 2012 Question and Answer of Few Questions : For Downloading Question Paper : Click Here

1. The first work on genetics was done by
(a) Lamarck (b) Hugo de Vries 
(c) Mendel (d) Darwin

2. Term chromosome was first coined by
(a) Hoffmeister (b) Suttan 
(c) Boveri (d) Waldeyer

3. Chromosomes were first seen by
(a) Hofmeister (b) Waldeyer 
(c) Strasburger (d) Returning

4. Chromosomes found in the salivary glands of Drosophila are
(a) Lampbrush (b) Polytene 
(c) Supernumerary (d) B-chromosomes

5. A giant chromosome with a chromonemata is
(a) Lampbrush chromosome (b) Hetero chromosome 
(c) Supernumerary chromosome (d) Polytene chromosome

6. Lampbrush chromosome occurs in
(a) Salivary glands (b) Lymph glands 
(c) Cancer cells (d) Oocytes
7. Chromosome ends are called
(a) Satellites (b) Telomeres 
(c) Centromeres (d) Kinetochores
8. Chromatid is
(a) One half chromosome number of (b) Haploid chromosome 
(c) Complete chromosome (d) Duplicate chromosome

9. Centromere is that part of chromosome where
(a) Nucleoli are formed (b) Crossing over takes place 
(c) Chromatids are attached (d) Nicking occurs

10. A chromosome with terminal centromere is
(a) Acentric (b) Acrocentric 
(c) Metacentric (d) Telocentric

11. A chromosome with centromere in the middle is called
(a) Metacentric (b) Submetacentric 
(c) Acrocentric (d) Teloccntric

12. Puffs or Balbiani rings in salivary gland chromosomes are sites of
(a) DNA replication (b) RNA synthesis 
(c) DNA duplication (d) Protein synthesis

13. Chromosome theory of inheritance was proposed by
(a) Sutton (1902) (b) Boveri (1902) 
(c) Sutton (1902) and Boveri (1902) (d) Correns (1909)

14. Chromatin fibers condense to form chromosomes during
(a) G-Phase (b) S-Phase 
(c) Metaphase (d) Prophase

15. The stage for counting of chromosomes is
(a) Early prophase (b) Mid prophase 
(c) Late prophase (d) Metaphase

16. More than 200 chromosomes occur in
(a) Chicken (b) Dog 
(c) Amoeba (d) Gorilla

17. Drosophila has four homologous pairs of chromosomes. What is the number of linkage groups in this animal?
(a) Four (b) Two 
(c) Eight (d) Uncertain

18. The genes which are present in same chromosome are called
(a) Identical genes (b) Allelomorphs 
(c) Linked genes (d) Dominant genes

19. Gene for colour blindness in men is located on
(a) X-chromosome only 
(b) Y-chromosome only 
(c) Either X or Y-chromosome 
(d) Both X and Y-chromosomes

20. A colour blind daughter may be born if the
(a) Father is normal and mother is colour blind
(b) Father is colour blind and mother is normal
(c) Father is normal and mother is a carrier
(d) Father is colour blind and mother is a carrier

21. A somatic cell in human male contains
(a) No genes on sex chromosomes
(b) Only one sex linked gene for each character
(c) Two genes for every sex linked character
(d) Genes only on sex chromosomes

22. A normal woman is married to a colour blind man. Children are expected to be
(a) All normal 
(b) 50% sons are colour blind 
(c) All daughters are normal but carrier, whereas all sons are normal phenotypically as well as genotypically.
(d) None of these

23. Which of the following diseases is sex linked?
(a) Colour blindness (b) Malignancy 
(c) Hepatitis (d) Leukemia

24. The genes for the eye colour and size of the wing in Drosophila are located on the same chromosome. They can be separated by
(a) Non-disjunction 
(b) Crossing over 
(c) Hybridization 
(d) Not be separated at any stage

25. A colour blind son is born to normal parents. It shows that
(a) The father was heterozygous for colour-blindness
(b) The mother was genotypically homozygous
(c) The mother was heterozygous for colour-blindness
(d) Both parents carried a recessive gene for the disorder

26. Chromosomal constitutions in human female can best be written as
(a) 46 (b) 44 + 2 
(c) 44A + XX (d) 44A 4- XY

27. The sex-linked characters are those
(a) Which are related to sexual physiology
(b) The genes of which are present on the sex chromosomes
(c) Which appear either in male or in female
(d) Which are controlled by sex hormone

_________

1. Which of the following cereal was among the first to be used by man?
a) Barley b) Oat
c) Rye d) Wheat

2. Lysine is an essential amino acid for man and, therefore, has to be an essential component of human diet. The highest content of this amino acid is found in:
a) Wheat b) Rye
c) Oat d) Barley

3. Consider the following crop plants cultivated in our country:
1. Maize 2. Spinach
3. Tobacco 4. Barley
Which of these are long – day plants?
a) 1 and 4 b) 2 and 4
c) 3 and 4 d) 2 and 3

4. Which of the following plants belong to the same plant family?
1. Apple 2. Apricot
3. Al nond 3. Peach
Select the correct answer from the codes give below:
a) 1 and 4 b) 2 and 3
c) 2, 3 and 4 d) 1, 2, 3 and 4
5. A plant known only in cultivation, having arisen under domestication is referred to as:
a) Cultigen b) Cultivar
c) Clone d) Scion
6. The pores in leaves through which liquid water oozes out at times are called:
a) Hydathodes b) Lenticels
c) Phyllopores d) Stomata

7. The tissue that is involved in the transport of food material in plants is called:
a) Parenchyma b) Phloem
c) Sclerenchyma d) Xylem

8. Match the crop plants in List I with their botanical names in List II and select the correct answer by using the codes given below the list:
List I List II
(Crop Plants) (Botanical Name)
a) Cotton 1. Mangifera indica
b) Grapes 2. Oryza Sativa
c) Rice 3. Gossypium hirsutum
d) Mango 4. Vitis vinifera

a) a-2; b-3; c-1; d-4 b) a-3; b-4; c-2; d-1
c) a-3; b-1; c-2; d-4 d) a-4; b-1; c-2; d-3

9. The international Board for Plant Genetic Resources (IBPGR) was established in 1974 at:
a) New Delhi b) Philippines
c) Boston d) Rome

10. Dr. E.H. Wilson, one of the greatest among the plant hunters, is well – known for his collection an introduction of the ‘regal lily’ to the United States of America. The plant was collected from:
a) China b) Japan
c) India d) Scandinavia

11. Plants that are unable to synthesize their own food and are, therefore, dependent on other sources of food are called:
a) Parasites b) Auxotrophs
c) Chemotrophs d) Heterotrophs

12. Match List I with List II and select the correct answer from the codes given below the lists.
List I List II
a) Fruit repening 1. Gibberellins
b) Cell division 2. Auxins
c) Apical dominance 3. Cytokinins
d) Stem elongation 4. Ethylene
a) a-3; b-1; c-2; d-4 b) a-4; b-3; c-2; d-1
c) a-1; b-2; c-3; d-4 d) a-2; b-1; c-4; d-3

13. The ripening of fruits can be accelerated by:
a) Decreasing oxygen concentration of the surroundings
b) Increasing ethylene concentration of the surroundings
c) Reducing water supply to the plants
d) Spraying urea during maturation of fruits

14. Nearly 90% of the global food supply comes from
a) Only five plant species
b) One dozen plant species
c) Nearly two dozen plant species
d) More than three dozen plant species

15. The primary role of vegetables and fruits in our diet is to supply us necessary minerals and vitamins. Which of the following vegetables and fruit crop/s is/are a rich source of Vitamin A (or its precursor)
a) Carrot b) Tomato
c) Mango d) All the above
16. The genetic material in viruses is:
a) Double – stranded DNA b) Single – stranded DNA
c) RNA d) All the above

17. A gram of fertile agricultural soil may contain bacteria up to:
a) Fifty thousand b) Five hundred thousand
c) Five million d) One billion and above

18. A fungus, Trichoderma viride, one of the worst pests of World War II, is now being cultured by the United States Army because of its capacity to:
a) Convert newspaper wastes and other municipal debris into glucose
b) Convert newspaper wastes, straw, and peanut shells into useful sugars
c) Synthesize cellulose
d) Synthesize various compounds for chemical warfare

19. A disease that occurs periodically in a widespread area causing devastating damage to crop plants is referred to as:
a) Endemic b) Epiphytotic
c) Extensive d) Sporadic

20. Match the plant disease in List I with the causative agent in List II and select the correct answer using the codes given below the lists:
List I List II
(Plant disease) (Causative agent)
a) Karnal bunt 1. Fungus
b) Citrus dieback 2. Bacterium
c) Sesamum 3. Virus
d) Tunda disease 4. Mycoplasma
5. Nematode
a) a-2; b-3; c-4; d-1 b) a-1; b-5; c-4; d-2
c) a-5; b-2; c-3; d-4 d) a-4; b-5; c-3; d-1

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3 Comments on "SSC CGL 2012 Discussion Question And Answer"

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sur sab
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hi..i was not aware of sectional cut off in ssc cgl exam..
m expecting overall 95/200 but i cud jst score 12 in general awareness section in which i just attempted 15 que.
plz repl about my chances of clearing if der.

ravi
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mera 72 sahi hue he…….kya dur dur tk koi chance hai?

Twitter Isaac - Sutton
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