objective answer key Biology in Bihar board 2018
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Explanation:
Question of the Objective type in Bihar board Intermediate Biology objective Questions.
Total number of eggs produced by healthy human female during lifetime
(A) 4000
(B) 400
(c) 40
(D) 365
2. The main reason for making copper T most effective and popular Intra Uterine device in female:
(A) Reduction in fertilization ability of spermatozoa
(B) Increase phagocytosis of spermatozoa due to release of copper iron
(C) Reduction in motility of spermatozoa
(D) All of these
3- in which of following species of plants are produced through apomixis:
(A) Asteraceae and Grass
(B) Mustard
(C) Citrus and mango
(D) None of these
4- Genes present on same locus having different expression are called-
(A) Multiple Allie
(B) Polygene
(C) Oncogene
(D) Codominant gene
5- The Human Chromosome with highest and least number of genes are
(A) Chromosome 21 and Y
(B) Chromosome 1 and X
(C) Chromosome 1 and Y
(D) Chromosome X and Y
6- Sickle Cell anaemia shows-
(A) Epistasis
(B) Codominance
(C) Pieotrophy
(D) Incomplete Dominance
(7) Adaptive radiation Australian marsupials are an example of –
(A) Divergent evolution
(B) Convergent evolution
(C) Saltation
(D) None of these
8- The Trisomy of 21 first chromosome causes
(A) Klinefelter’s Syndrome
(B) Turner’s Syndrome
(C) Sickle cell anaemia
(D) Downen’s Syndrome
9- A normal vision female whose father is colour blind marriage in normal vision mail would be a possibility of her son and daughter colour blind
(A) 25% Sun colour blind and all daughters with phenotypically normal vision.
(B) 50% Sun colour blind and 50% outer normal.
(C) 50% Sun colour blind and 50 what are colour blind
(D) All sons normal and 50% colour blind daughter
10- An appearance of antibiotic resistance Bacteria is an example of
(A) adaptive radiation
(b) transduction
(c) pre-existing variation
(D) divergent evolution
11- Which of following is involved in transcription of tRNA, 5Sr RNA and Sn RNA of eukaryotes?
(A) RNA Polymerase I
(B) RNA Polymerase II
(C) RNA Polymerase III
(D) All of these
12- A child with blood group O has B blood group type father then the father has a geno type of –
(A ) I ‘ I ‘
(B) I ‘ I b
(C) I b I b
(D) Ia I a
13- Flavr Savr’ is a
(A) Pesticide
(B) Chicken bree
(C) Transgenic Tomato
(D) Insecticidal Protein
14- the specific sequence of DNA recognized by Restriction Endonuclease are
A) palindromic nucleotides sequence
(B) VNTR
(C) Minisatellite
(D) All of these
15- Silencing of a gene could be achieved through the use of
(A) short interfering RNA RNA I
(B) Antisense RNA
(C) A and B both
(D) None of these
16.First Clinical Gene Therapy?
Ans-A
17.GAATTC-
Ans-B
18.First Transgenic Cow was?
Ans-D
19.Which of the following nematodes infect the root of tobacco plant?
Ans-C
20.Molecular techniques in which multiple copies of the desired Genesis science in vitro is called as
Ans-PCR
21.which of the following engine is used to get the bacterial cell wall To Release DNA component?
Ans-Lysozymes
22.Autoimmune disease?
Ans-B R Arthritis
23. The immediate metabolic change in body notice after consuming tobacco age
Ans- C ( both a & B)
24.Sonalika and Kalyan Sona are
Ans-Wheat
25.Which is not a biofertilizer?
Ans- Clostridium
26.Masses of bacteria and fungal filament form a mesh called as?
Ans-FLOCKS
27.Are probiotics?
Ans- Live microbial food supplement
28.Toxin Protein secreted by BT ?
Ans-CRY Protein
29.Which of the following is a retrovirus?
Ans-HIV
30.disease generated by Allergan?
Ans-Hey Fever
31.photochemical smog consist of?
Ans- Ozone, PAN and Hydrocarbon
32.Snow blindness?
Ans-UV Rays (a)
33.The thickness of ozone is measured in?
Ans-Dobson
34.The total number of bio hotspot?
Ans-34
35.Which of the following is green House Gas?
Ans-All
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