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) chromosome number increase in 18th pair autosome
(b) chromosome number decrease in 21st pair autosome
(c) chromosome number increase in 21st pair autosome
(d) chromosome number decrease in 18th pair autosome
The correct answers to the above question in:
Answer: (c)
Down syndrome is a case of Trisomy 21, a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.
Discuss Form
Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
Which of the following is not a pteridophyte?
a) Polypodium
b) Ginkgo
c) Selaginella
d) Azolla
Answer »Answer: (b)
Ginkgo is a gymnosperm.
Question : 2
Which bacteria is utilized in gober gas plant?
a) Ammonifying bacteria
b) Methanogens
c) Nitrifying bacteria
d) Denitrifying bacteria
Answer »Answer: (b)
Methanobacillus (methanogen) occurs in marshes and also in dung. It produces CH4 gas under anaerobic condition and is utilized in gobar gas plant.
Question : 3
According to recent proof, the life on earth emerged approximately
a) Before 20,00,000 years
b) Before 20,000 years
c) Before 2,00,000 years
d) Before 2,000,000,000 years
Answer »Answer: (d)
Question : 4
The book ‘Origin of Species’ is written by
a) Darwin
b) Watson
c) Aristotle
d) Lamarck
Answer »Answer: (a)
'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.
Question : 5
Which one of the following is not a feature of eutrophic lakes?
a) Primary productivity is low
b) Blooms are frequent in eutrophic lakes
c) Plant nutrient flux is high
d) Dominated by blue green algae
Answer »Answer: (c)
Question : 6
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 |
a) 4 3 1 2
b) 3 4 1 2
c) 4 3 2 1
d) 3 4 2 1
Answer »Answer: (c)
Verbal Reasoning
Question & Answer Quiz
Non Verbal Reasoning
Question & Answer Quiz
Quantitative Aptitude
Question & Answer Quiz
Computer MCQ
Question & Answer Quiz
General English
Question & Answer Quiz
History GK
Question & Answer Quiz
Polity GK
Question & Answer Quiz
Geography GK
Question & Answer Quiz
Economy GK
Question & Answer Quiz
General Awareness GK
Question & Answer Quiz
Recently Added Subject & Categories For All Competitive Exams
SSC STENO: Mensuration Area & Volume Questions Test PDF
Free Mensuration Area and Volume Aptitude-based Practice multiple questions with solutions, Quiz, Full Mock Test & PDF for SSC Steno (Grade C & D) 2024 Exam
Continue Reading »
SSC STENO: Speed Time and Distance MCQ Questions Test PDF
Free Time and Distance Aptitude-based Practice multiple questions with solutions, Quiz series, Mock Test & Download PDF for SSC Steno (Grade C & D) 2024 Exam
Continue Reading »
SSC STENO: Time & Work Questions Solved Problems with PDF
Free Time and work Aptitude-based Practice multiple questions with solutions, Quiz series, Mock Test & Downloadable PDF for SSC Steno (Grade C & D) 2024 Exam
Continue Reading »
SSC STENO 2024: Free Reading Comprehension MCQ Test PDF
Top Reading Comprehension English Section-wise multiple choice questions and answers, Full Mock Test Series & Online Quiz for SSC Steno Grade C & D 2024 Exam
Continue Reading »