Science Part 2 Question Bank Solution – Q 1 A) Choose the correct option:

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1) Transfer of information from molecules of DNA to mRNA is called _____ process.
A. translocation
B. translation
C. transcription.
D. differentiation

2) Similarities in initial stages indicate the _______ evidence.
A. Connecting links
B. Anatomical
C. Embryological.
D. Palaeontological

3) ______ is a vestigial organ in human beings.
A. Wisdom teeth
B. Ear muscles
C. Body hairs
D. All the above

4) Protein located in bones is ______.
A. myosin
B. melanin
C. haemoglobin
D. ossein

5) Which of the following vitamins is necessary for synthesis of NADH2 ?
A. Vitamin B3
B. Vitamin C
C. Vitamin B2
D. Vitamin K

6) _______ cells divide by mitosis.
A. Somatic.
B. Gametes
C. Stem.
D. Both A and C

7) The first step of karyokinesis is ________.
A. anaphase
B. telophase
C. metaphase.
D. prophase.

8) _________ is not a part of mitosis.
A. Anaphase
B. Diplotene
C. Prophase
D. Cytokinesis

9) We get _______ energy from lipids.
A. 4 cal / gm.
B. 9 cal/ gm
C. 9 kcal/ gm.
D. 4 kcal/gm.

10) In Humans there are ___ pairs of chromosomes.
A. 22.
B. 23
C. 44
D. 46

11) Which of the following is not a type of asexual reproduction in multicellular organisms?
A. Fragmentation
B. Regeneration
C. Budding
D. Binary fission

12) Find the odd one out:
A. Stigma
B. Anther
C. Style
D. Ovary

13) At the time of birth , there are _________oocytes in the ovary of a female foetus.
A. 1 to 2 million
B. 2 to 3 million
C. 2 to 4 million
D. none of these

14) _________ modern remedial technique is used if there is a problem in implantation of embryo in the uterus.
A. Surrogacy.
B. Sperm bank
C. In vitro fertilization.
D. none of these.

15) Implantation of the embryo occurs in ________.
A. Uterus.
B. Overy
C. Oviduct.
D. Vagina

16) In humans, sperm production occurs in the organ _______.
A. testes.
B. scrotum
C. prostate gland.
D. ovaries.

17) Pregnant mother supplies nourishment to her foetus through _________.
A. uterus.
B. placenta
C. ovary
D. oviduct.

18) _________ twins are formed from a single embryo.
A. Dizygotic
B. Monozygotic
C. Multiple zygote.
D. Zygote

19) Pollen grains are formed by _________ division in locules of anthers.
A. meiosis
B. mitosis
C. amitosis.
D binary.

20) Asexual reproduction occurs by _________ cell division.
A. mitotic
B. meiotic
C. fertilization.
D. double fertilization.

21) This method of asexual reproduction is seen in paramecium.
A. transverse binary fission
B. longitudinal binary fission
C. simple binary fission
D. regeneration

22) In meiosis, the number of chromosomes becomes _______.
A. multiple times.
B. triple
C. half
D. double

23) Generally, every month, ______ ovum is released in the abdominal cavity alternately from each ovary.
A. 1
B. 2
C. 3
D. 4

24) ________ is present in unisexual flower.
A. Both androecium and gynoecium
B. Only androecium
C. Only gynoecium
D. Androecium or gynoecium

25) _________ is a chemical factor of abiotic components.
A. Air
B. Water
C. Nutrients
D. Sunlight

26) __________ is an organic compound of abiotic components.
A. Proteins.
B. Iron.
C. Sodium.
D. Oxygen

27) _______ is a rare species.
A. Lesser florican
B. Tiger
C. Giant squirrel.
D. Musk deer

28) _________ is an indeterminate species.
A. Red panda.
B. Lion
C. Lion tailed monkey
D. Giant squirrel

29) Occurrence of diversity among the organisms of the same species is called _______ diversity.
A. species.
B. genetic
C. ecosystem.
D. animal

30) In modern civilization,——– has become a primary need.
A. food.
B. cloth
C. shelter.
D. energy

31) Most electric power plants are based on the principle of _______.
A. electro induction.
B. magnetic induction.
C. electro- magnetic induction
D. electromagnet.

32) Principle of Electromagnetic induction was invented by the scientist _______.
A. Ohm.
B. Michael Faraday
C. Joule.
D. Newton

33) In the power plant based on nuclear energy _______ is used to rotate the generator.
A. Steam turbine
B. Air turbine
C. Water turbine
D. None of these

34) When a neutron is bombarded on an atom of uranium _______ neutrons generated in this process.
A. 1
B. 2
C. 3
D. 4

35) Kinetic energy in flowing water drives _________ to generate electricity.
A. watermill
B. windmill
C. turbines
D. generator

36) Wind turbines with capacity are commercially available.
A. 1 KW to 7 MW.
B. 1 KW to 7 KW.
C. 1 KW to 7000 W.
D. 1 W to 7 MW.

37) Solar photovoltaic cells convert the solar radiation energy directly into _____ energy.
A. electrical
B. potential
C. kinetic.
D. heat.

38) A silicon solar cell of dimension 1 sq.cm. generates current of about ______.
A. 50 mA
B. 30 mA
C. 50 A
D. 30 A

39) A silicon solar cell of dimension 1 sq.cm. generates ______ potential difference .
A. 0.1 V.
B. 0.5 V.
C. 0.1 mV.
D. 0.5 mV.

40) In nuclear power plants, neutrons are bombarded on atoms of ______.
A. uranium-236
B. barium
C. krypton
D. Uramium-235

41)My body is soft and slimy,hence I am referred as ______ .
A. mollusca
B. echinodermata
C. annelida
D. arthropoda

42) Which of the following is a hermaphrodite animal?
A. doliolum
B. scorpion
C. centipede
D. cockroach

43) Which of the following animals can regenerate it’s broken body parts ?
A. Frog
B. Starfish
C. Sparrow
D. Pigeon

44) Which of the following is a warm blooded (homeothers) animal?
A. Bat
B. Tortoise
C. Wall lizard
D. Crocodile

45) My body is _______ shaped to minimize water resistance.
A. pointed
B. spindle
C. cartilaginous
D. flat

46) _______ animal is called a friend of farmers.
A. Rabbit
B. Cat
C. Leech
D. Earthworm

47) Which of the following animals has a hard calcareous shell?
A. nereis
B. shark
C. bivalve.
D. herdmania

48) _________ acid is used in Production of vitamins .
A. Citric
B. Gluconic
C. Lactic
D. Itaconic

49) Nowadays ,——— are used for treatment of diarrhoea and treatment of poultry also.
A. yoghurt
B. probiotics
C. vinegar
D. cheese

50) Yoghurt is a milk product produced with the help of ———.
A. lactobacilli
B. azotobacter
C. corynebacterium
D. streptococcus

51) —— is a powerful antibiotic against treatment of tuberculosis.
A. Penicillin.
B. Rifamycin
C. Streptomycin.
D. Bacitracin.

52) ——– is used in the commercial bakery industry.
A. Compressed yeast
B. Algae
C. Bacteria
D. Microbes

53) ——- is a substance obtained by microbial processing that roles as artificial sweetener.
A. Nycin
B. Lysine
C. Xanthenes
D. Xylitol

54) At the earliest stage of development, the organism is in the form of a mass of a cell, which are almost alike, those cells are called ________.
A. Stem cells
B. RBC
C. WBC
D. None of these

55) Which of the following is an important requirement in organ transplantation?
A. Blood group of recipient
B. Diseases of donor
C. Age of donor
D. all above

56) Availability of _____ is an important requirement in organ transplantation.
A. doctor
B. clinic
D. donor
D. ambulance.

57) The disease related with the synthesis of insulin is _______.
A. cancer
B. arthritis
C. heart disease
D. diabetes.

58) Transgenic raw potatoes generate the immunity against _______ disease.
A. plague
B. cholera
C. leprosy
D. TB

59) ________ have valuable contributions in the green revolution in the USA.
A. Dr. Norman Borlaug.
B. Dr. Swaminathan.
C. Dr. Wargis Currian.
D. Dr. Hargovind Khurana.

60) Methods like artificial insemination and embryo transplant are mainly used for _________.
A. animal husbandry.
B. wild life
C. pet animals.
D. infertile women.

61) _______ is the revolutionary event in biotechnology after cloning.
A. Human genome project
B. DNA discovery
C. Stem cell research
D. All the above

62) Biotechnology integrated the toxin which is fatal for ______, was produced in leaves and bolls of cotton.
A. bollworm
B. caterpillar
C. sparrow
D. frog

63) Cell _______ starts from 14th day of conception.
A. growth.
B. differentiation
C. development
D. division

64) The Government of India has encouraged _____ for improving the productivity by launching the program NKM-16.
A. aquaculture.
B. poultry
C. piggery
D. apiculture

65) _____ are present in the umbilical cord by which the foetus is joined to the uterus of the mother.
A. stem cells
B. muscle cells
C. neuron cells
D. bone cells

66) For the purpose of preservation stem cell samples are kept in ——-.
A. liquid oxygen
B. hydrogen
C. liquid chlorine
D. liquid nitrogen

67) Phenylketonuria arises due to genetic changes in ______ cells.
A. liver
B. intestine
C. pancreas
D. heart

68) ________ organism is used as biofertilizers.
A. Thiobacillus
B. Nostoc
C. Saccharomyces
D. Ischeria

69) Alcohol consumption mainly affects the ______ system.
A. nervous
B. excretory
C. respiratory
D. digestive

70) Laughter club is a remedy to drive away _______.
A. addictions
B. stress
C. lethargy
D. epidemics

71) _______ helps to improve concentration in the studies.
A. hobbies
B. sports
C. meditation.
D. eatables

72) _______influence is stronger in case of adolescents.
A. Teachers.
B. Fathers
C. Relatives.
D. Peer group

73) Our _______ has been changed to some extent in the age of technology.
A. lifestyle
B. habit
C. circumstance
D. passion

74) Hobbies like _______ pet animals help to create a positive mindset.
A. feeding
B. transferring
C. rearing
D. looking

75) Continuous consumption of ______ substances causes carcinogenic especially on the mouth and lung.
A. hot
B. sweet
C. spicy
D. tobacco like

76) Alcoholic person lacks the _____ thinking.
A. straight
B. rational
C universal
D. spiritual

77) _____ may arise due to excessive use of mobile phones.
A. Headache
B. Problem in vision
C. Joint pains
D. All above

78) Liquor is produced from ______.
A. alcohol
B. glucose
C. acid
D. salt

79) Salaam Mumbai Foundation runs programs for _______ in a slum area.
A. education
B. tobacco
C. cyber crimes
D. domestic violence

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