set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 5 EXERCISES
The following question based on genetics, evolution of life & ecological biodiversity topic of general science mcq
(a) 4 pairs of legs
(b) 2 pairs of legs
(c) 3 pairs of legs
(d) 1 pair of legs
The correct answers to the above question in:
Answer: (c)
Class insecta has 3 pairs of legs located on the thoracic segments. It is the characteristic feature of class Insecta.
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Question : 1
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.
a) 2 only
b) 2 and 3
c) 1 and 2
d) 1, 2, 3 and 4
Answer »Answer: (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.
Question : 2
The famous botanical garden ‘Kew’ is located in
a) Berlin
b) England
c) Lucknow
d) Australia
Answer »Answer: (b)
Question : 4
The mutation theory of evolution was enunciated by
a) Lamarck
b) Huxley
c) Darwin
d) Hugo de Vries
Answer »Answer: (d)
Question : 5
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.
a) 1 and 3
b) 2 only
c) 1 only
d) 1, 2 and 3
Answer »Answer: (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
Question : 6
Whittaker is famous for
a) Five kingdom classification
b) Two kingdom classification
c) Four kingdom classification
d) Distinguishing in Bacteria & Blue green algae
Answer »Answer: (a)
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