Bihar Board 12th Biology Objective Questions and Answers
Bihar Board 12th Biology VVI Objective Questions Model Set 3 in English
Question 1.
Dryopithecus is more similar to
(a) Ape
(b) Gorilla
(c) chimpanzee
(d) Man
Answer:
(a) Ape
Question 2.
Opium is obtained from
(a) Papaver somniferum
(b) Erythroxylum coca
(c) Cannabis Sativa
(d) Atropa belladonna
Answer:
(a) Papaver somniferum
Question 3.
Bio reactors provide optimal conditions to produce desired
(a) Product
(b) Organism
(c) Medium
(d) All of these
Answer:
(a) Product
Question 4.
Amplification of gene for interest may be done by
(a) MMR
(b) PCR
(c) MRI
(d) All of these
Answer:
(b) PCR
Question 5.
Gametes are usually
(a) Haploid
(b) Diploid
(c) Polyploid
(d) Nulliploid
Answer:
(a) Haploid
Question 6.
For induction of alien DNA in the host cell, we may use
(a) Gene gun
(b) Micro-pipette
(c) Both (a) & (b)
(d) None of these
Answer:
(c) Both (a) & (b)
Question 7.
Organic evolution was preceded by chemical evolution, the champions of this theory are
(a) A. I Oparin and J.B.S. Haldane
(b) Charles Darwin
(c) Arrhenius
(d) Baptiste Lamarck
Answer:
(a) A. I Oparin and J.B.S. Haldane
Question 8.
In certain cases for early and accurate detection of disease, we may use
(a) ELISA
(b) Culture
(c) Chemical
(d) Analytical
Answer:
(a) ELISA
Question 9.
Tuberculosis is transmitted by
(a) Air
(b) Water
(c) Insect
(d) Contact
Answer:
(a) Air
Question 10.
Restriction enzymes are known as
(a) Biological guns
(b) Molecular scissors
(c) Plasmid
(d) Micro Pipette
Answer:
(c) Plasmid
Question 11.
ampR gene is responsible for developing resistance in
(a) Pest
(b) Insect
(c) Antibiotic
(d) Drought
Answer:
(c) Antibiotic
Question 12.
Taichung is a variety of
(a) Rice
(b) Wheat
(c) Maize
(d) Sugarcane
Answer:
(a) Rice
Question 13.
For Nitrogen fixation in the soil we may use
(a) Cyanobacteria
(b) Protozoans
(c) Nematodes
(d) Wheat plants
Answer:
(a) Cyanobacteria
Question 14.
The gynoecium is made up of
(a) Stigma
(b) Style
(c) Ovary
(d) All of these
Answer:
(d) All of these
Question 15.
RNAi is used to control pests on which plant?
(a) Tabacco
(b) Mango
(c) Potato
(d) Poppy
Answer:
(a) Tabacco
Question 16.
Lac operon represents
(a) Inducible gene system
(b) Repressible gene system
(c) Housekeeping gene system
(d) All of these
Answer:
(a) Inducible gene system
Question 17.
The anterior portion of sperm is converted by a cap-like structure know as
(a) Acrosome
(b) Mesosome
(c) Episome
(d) Spherosome
Answer:
(a) Acrosome
Question 18.
Sickle-cell anaemia is related to which type of disease?
(a) Sex-linked diseases
(b) Autosomal linked disease
(c) Deficiency
(d) Metabolic disease
Answer:
(b) Autosomal linked disease
Question 19.
Pisciculture is a related culture of
(a) Aquatic plants
(b) Aquatic animals
(c) Silkworm
(d) Lack of worm
Answer:
(b) Aquatic animals
Question 20.
B-lymphocytes are produced in
(a) Bone marrow
(b) Thymus
(c) Blood
(d) Lymph
Answer:
(a) Bone marrow
Question 21.
Number of deaths during a limited time period and place for a particular population is known as
(a) Natality
(b) Mortality
(c) Migratory
(d) Integrity
Answer:
(b) Mortality
Question 22.
Which of the following is wrong pair?
(a) G = C
(b) T = A
(c) A = U
(d) T = U
Answer:
(c) A = U
Question 23.
Cry IAB controls
(a) Corn Borer
(b) Wheat Rust
(c) Cotton insects
(d) Maize height insects
Answer:
(a) Corn Borer
Question 24.
Amphibians among plants belong to
(a) Algae
(b) Bryophytes
(c) fungi
(d) Pteridophytes
Answer:
(b) Bryophytes
Question 25.
Synthesis of RNA on DNA template is known as
(a) Translation
(b) Transcription
(c) Transduction
(d) Replication
Answer:
(b) Transcription
Question 26.
Transgenic mice may be used for testing of
(a) The safety of vaccines
(b) Efficiency of fertilizers
(c) Doses of antibiotics
(d) All of these
Answer:
(a) The safety of vaccines
Question 27.
A climax community is present in which area?
(a) In equilibrium
(b) In transition
(c) Bare land
(d) None of these
Answer:
(a) In equilibrium
Question 28.
Flowers of Vallisneria spp are
(a) Anemophilous
(b) Entomophilous
(c) Hydrophilous
(d) Zoophilous
Answer:
(c) Hydrophilous
Question 29.
The phenotypic ratio for F2 generation in Incomplete dominance is
(a) 3 : 1
(b) 2 : 2
(c) 1 : 2 : 1
(d) None of these
Answer:
(c) 1 : 2 : 1
Question 30.
Yeast reproduces by means of-
(a) Budding
(b) Fragmentation
(c) Pollination
(d) All of these
Answer:
(a) Budding
Question 31.
The uterus is related to
(a) male Reproductive system
(b) Female Reproductive system
(c) Plant Reproductive system
(d) All of these
Answer:
(b) Female Reproductive system
Question 32.
Uracil is related to
(a) RNA
(b) DNA
(c) Both (a) & (b)
(d) None of these
Answer:
(a) RNA
Question 33.
Water holding capacity is one of the qualities of
(a) Soil
(b) Plants
(c) Water
(d) Animals
Answer:
(a) Soil
Question 34.
The brewery is concerned with
(a) Saccharomyces
(b) Protozoans
(c) Pteridophytes
(d) Marsupials
Answer:
(a) Saccharomyces
Question 35.
S.L. Millar is related to
(a) Origin & Evolution of life
(b) Use and disuse theory of evolution
(c) Neo-Darwinism
(d) Neo-Lamarckism
Answer:
(a) Origin & Evolution of life