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
- 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
The correct answers to the above question in:
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
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
The mutation theory of evolution was enunciated by
a) Lamarck
b) Huxley
c) Darwin
d) Hugo de Vries
Answer »Answer: (d)
Question : 2
Insects have
a) 4 pairs of legs
b) 2 pairs of legs
c) 3 pairs of legs
d) 1 pair of legs
Answer »Answer: (c)
Class insecta has 3 pairs of legs located on the thoracic segments. It is the characteristic feature of class Insecta.
Question : 3
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 : 4
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)
Question : 5
Vestigial organs are those present in the living beings without functions gives and mark the correct option for vestigeal organs in humans
a) nicitating membrane in eyes
b) Vermifrom appendix
c) mammary glands of male
d) all of the above
Answer »Answer: (d)
These 'useless' body parts, otherwise known as vestigial organs, are remnants of lost functions that our ancestors possessed. They once represented a function that evolved out of a necessity for survival, but over time that function became non-existent.
Question : 6
To which of the following types of animals are Salamanders closely related?
a) Prawns and Crabs
b) Dolphins and Whales
c) Frogs and Toads
d) Seals and Walruses
Answer »Answer: (c)
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