set 4 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) Birds
(b) Mammals
(c) Reptiles
(d) All land vertebrates
The correct answers to the above question in:
Answer: (a)
Hollow bones are characteristic adaptive features of birds. It reduces their body weight and is a major flight adaptation.
Discuss Form
Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
Consider the following statements :
- Genomics is the study of the sequencing the genomes of organisms.
- Genomics includes intensive efforts to determine the entire DNA sequence of organisms and fine scale genetic mapping efforts.
- Genomics was established by Fredrick Sangerwhen he first sequenced the complete genomes of a virus and a mitochondrion.
a) 1 and 3
b) 2 and 3
c) 1 and 2
d) 1, 2 and 3
Answer »Answer: (d)
Question : 2
Which of the following viruses have RNA as the genetic material?
- Polio-viruses
- Retroviruses
- Adeno-viruses
- TMV
a) 2, 3 and 4
b) 1, 2 and 4
c) 1, 2 3 and 4
d) 3 and 4
Answer »Answer: (b)
Adenoviruses are medium-sized (90–100 nm), nonenveloped viruses with an icosahedral nucleocapsid containing a double stranded DNA genome.
Question : 3
The first organisms were
a) Chemoheterotrophs
b) Autotrophs
c) Chemoautotrophs
d) Eukaryotes
Answer »Answer: (a)
Chemoheterotrophs were first organisms. They were prokaryotic like bacteria, anaerobes, as molecular oxygen was absent. They obtained energy by fermentation of some of the organic molecules present in the broth. Thus they absorbed organic molecules from outside for body building and energy.
Chemoautotrophs - Organisms that are capable to synthesize organic molecules from inorganic molecules. E.g., Nitrifying bacteria, sulphur reducing bacteria etc.
Autotrophs are photosynthesizing plants / organisms.
Question : 4
What was the most significant trend in evolution of modern man (Homo sapiens) from his ancestors ?
a) Shortening of jaws
b) Binocular vision
c) Upright posture
d) lncreasing brain capacity
Answer »Answer: (d)
The most significant trend in evolution of modern man (Homo sapiens) from his ancestors is development of brain capacity.
Question : 5
Which one of these is not a food chain
a) Plants → Insects → Frog → Snake → Kite
b) Trees → Deer → Lion
c) Plants → Man → Anaconda
d) Small → plants → Crabs → Fish → Swan → bird
Answer »Answer: (c)
Question : 6
A biogeographic region with significant reservoir of biodiversity that is under threat from humans is called as
a) biodiversity reservoir
b) bioendangered region
c) biodiversity hotspot
d) environmentally endangered region
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
Syllogism Practice Questions Answers PDF - IBPS Clerk 2024
Practice Verbal Reasoning Syllogism multiple choice questions and answers with Fully solved explanation, PDF for the IBPS Clerk Prelims 2024 Bank Exam
Continue Reading »
IBPS Clerk Prelims 2024 Synonyms Questions Solved Answers
Most important IBPS Clerk Prelims 2024 Synonyms and Antonyms multiple choice questions and answers with detailed solutions, English vocabulary PDF Download
Continue Reading »
New Cloze Test Questions and Answers PDF - IBPS Clerk 2024
The most important Cloze Test questions with detailed answers for upcoming IBPS Clerk prelims 2024. Latest English verbal ability practice MCQs, PDF
Continue Reading »
Mensuration Aptitude Practice Mcq Questions IBPS Clerk 2024
Most Important Practice Mensuration aptitude multiple choice questions, answers with detailed solutions, PDF beginner to advanced for IBPS Clerk Prelims 2024
Continue Reading »