☰
GkSeries.com

NCERT - Class 12 Biology Questions and Answers from Chapter "Evolution" | GkSeries

Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Evolution of Biology | Page-4
Go To Download Page
46 Which type of selection is industrial melanism observed in moth, Biston bitularia:
[1] Stabilising
[2] Directional
[3] Disruptive
[4] Artificial
Answer: Directional
47 Variations during mutations of meiotic recombinations are:
[1] random and directionless
[2] random and directional
[3] random and small
[4] random, small and directional
Answer: random, small and directional
48 Which of the following is an example for link species?
[1] Lobe fish
[2] Dodo bird
[3] Sea weed
[4] Tyrannosaurus rex
Answer: Lobe fish
49 Appearance of antibiotic-resistant bacteria is an example of:
[1] adaptive radiation
[2] transduction
[3] pre-existing variation in the population
[4] divergent evolution
Answer: pre-existing variation in the population
50 Animal husbandry and plant breeding programmes are the examples of:
[1] reverse evolution
[2] artificial selection
[3] mutation
[4] natural selection
Answer: artificial selection
51 Which of the following is totally impossible outcome of Mendel�s Experiment?
[1] 3 tall 1 short plant
[2] 24 tall and 8 short plants
[3] 8 tall and 0 short plants
[4] 4 tall plants and 1 medium height plant.
Answer: 4 tall plants and 1 medium height plant.
52 Which section of DNA provides information for one protein
[1] Nucleus
[2] Chromosomes
[3] Trait
[4] Gene
Answer: Gene
53 What is the probability that the male progeny will be a boy?
[1] 50%
[2] 56%
[3] 47.43%
[4] It varies
Answer: 50%
54 Which of the following can be called a characteristic?
[1] Plants can photosynthesis
[2] We have 2 eyes
[3] Mango tree is multicellular
[4] All of these
Answer: All of these
55 Palantological evidences for evolution refer to the:
[1] development of embryo
[2] homologous organs
[3] fossils
[4] analogous organs.
Answer: fossils
56 For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be
[1] 42%
[2] 49%
[3] 9%
[4] 58%
Answer: 42%
57 Homologous organ have
[1] Same structure, same function
[2] Different structure, different function
[3] Same structure, different function
[4] different structure, same function
Answer: Same structure, different function
58 The first cells like structures evolved in
[1] Ocean
[2] Air
[3] Land
[4] Desert
Answer: Ocean
59 Eukaryotes with a nucleus evolved ---million years ago
[1] 2200
[2] 3800
[3] 4500
[4] 1600
Answer: 1600
60 In primitive earth, energy was formed from
[1] Lightning
[2] Volcanic eruption
[3] UV light
[4] All of these
Answer: Volcanic eruption

Chapters

Click Here to Read more questions