Practice Quiz pdf set 1 - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Which of the following is not a bird?
(a)
(b)
(c)
(d)
Q-2) Consider the following statements : - Polytene chromosomes found in salivary gland of larva of Drosophila and Chironomus larva.
- They were Discovered by Balbiani.
- They were characterized by presence of puffs and Balbiani rings
- These chromosomes are attached by chromocentre.
Which of the statements given above are correct about polytene chromosomes?
(a)
(b)
(c)
(d)
Polytene chromosomes are over-sized chromosomes which have developed from standard chromosomes and are commonly found in the salivary glands of Drosophila melanogaster. These were originally observed in the larval salivary glands of Chironomus midges by Balbiani in 1881. Many balbiani rings and puffs are a part of these chromosomes.
Q-3) The famous botanical garden ‘Kew’ is located in
(a)
(b)
(c)
(d)
Q-4) Consider the following statements : - Sickle cell anaemia is a genetic disease common in tropical and sub-tropical countries.
- Sickle-cell anaemia is due to mutation in β-globulin gene.
- Due to the sickle-shaped RBCS oxygen carrying capacity of the haemoglobin decreases.
Which of the statement(s) given above is/are correct?
(a)
(b)
(c)
(d)
Due to mutation in the b-globulin gene of haemoglobin, the oxygen carrying capacity of RBCs decreases considerably, eventually causing sickle cell andaemia.
Q-5) Which one of the following represents a test cross ?
(a)
(b)
(c)
(d)
Q-6) The book ‘Origin of Species’ was written by
(a)
(b)
(c)
(d)
Q-7) The book ‘Origin of Species’ is written by
(a)
(b)
(c)
(d)
'Origin of Species' book was written by Charles Robert Darwin.
During his world journey (1831–1936) as a naturalist on the H.M.S. Beagle ship, he visited many parts of the world. On the basis of the observations of this journey, he wrote the book thereby describing his theory of natural selection.
Q-8) Match List-I with List-II :
List-I
List-II
A. Discovery of transduction and conjugation
1. Khurana
B. Establishing the sex-linked inheritance
2. Kornberb
C. Isolation of DNA polymerase from E. coli
3. Lederberg
D. Establishing the complete genetic code
4. Morgan
Select the correct answer from the codes given below the lists: (A) (B) (C) (D)
| List-I | List-II |
| A. Discovery of transduction and conjugation | 1. Khurana |
| B. Establishing the sex-linked inheritance | 2. Kornberb |
| C. Isolation of DNA polymerase from E. coli | 3. Lederberg |
| D. Establishing the complete genetic code | 4. Morgan |
(a)
(b)
(c)
(d)
Q-9) Consider the following statements :
- Mirabilis is an exception to Mendel’s principle of dominance.
- Mendel’s second law is the law of segregation.
- Mendel’s law of independent assortment is based on F2 ratio of 9 : 3 : 3 1.
Which of the statement(s) given above is/are correct about Mendel’s law?
(a)
(b)
(c)
(d)
Incomplete dominance and Co-dominance are non-Mendelian genetic characteristics. Mendel’s second law is the law of independent assortment of segregation. It is based on the F2 ratio of 9 : 3 : 3 : 1
Q-10) Which of the following is not a pteridophyte?
(a)
(b)
(c)
(d)
Ginkgo is a gymnosperm.