7

12th Biology test 2

1 / 65

What does operon model represent ?

2 / 65

Which of the following forms endosperm after fusion with male
gamete ?

3 / 65

Fossils are generally found in –

4 / 65

During which process Okazaki fragments are synthesized ?

5 / 65

Human antibodies are made of –

6 / 65

Which one is not a hydrophytic plant ?

7 / 65

Which is the number of chromosomes in Turner’s syndrome ?

8 / 65

Opium is obtained from –

9 / 65

𝐵-lymphocytes are produced in –

10 / 65

Which infective stage of Plasmodium occurs in human ?

11 / 65

Ti-plasmid is obtained from which of the following ?

12 / 65

‘Cry-gene’ prevents which crop from bollworm ?

13 / 65

Termination codon is –

14 / 65

DNA double helix is –

15 / 65

Which organelle is not present in the cytoplasm of ovum ?

16 / 65

Which enzyme is required in the process of transcription ?

17 / 65

Wings of insects and birds are called as -

18 / 65

Relaxin is secreted by –

19 / 65

Which one is pioneer in a xerosere ?

20 / 65

Which of the following is a heavy-metal water pollutants ?

21 / 65

Ovulation takes place in –

22 / 65

Where is the Ranthambore National Park situated ?

23 / 65

Sex chromosome of human beings are –

24 / 65

The mobile genetic element is –

25 / 65

Peripatus is connecting link between –

26 / 65

Hugo de Vries proposed –

27 / 65

Transgenic ‘hirudin’ is obtained from which of the following?

28 / 65

Entamoeba histolytica is a pathogen of which disease in the
following?

29 / 65

The two components of an ecosystem are –

30 / 65

Reproduction which does not involve gametic union is called ?

31 / 65

Eutrophication is found in –

32 / 65

The F2 phenotypic ratio in dihybrid cross is –

33 / 65

Roots of which plant give rise to a new plant ?

34 / 65

Which one is an example of endomycorrhiza ?

35 / 65

What causes acid rain ?

36 / 65

vuchreriya bancrafty who spread filariasis in human, is group of ?

37 / 65

EcoR1 source of enzyme-

38 / 65

Lymphocyte produce-

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pollution indicator-

40 / 65

Do algae reproduce asexually?

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Genetic engineering used as-

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chipko movement started-

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Male bee developed by-

44 / 65

which one is Bisexual organism?

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Which one is STD in following?

46 / 65

Cause of allergy chemical is-

47 / 65

Menstruation cycle occurs in-

48 / 65

who introduced the theory of chromosomal inheritance

49 / 65

food chains interconnection makes-

50 / 65

External DNA and conductor DNA make after mixture

51 / 65

How many week is secure for MTP after pregnancy?

52 / 65

Ratio of mono hybrid cross is-

53 / 65

Penicillin antibiotics produced from-

54 / 65

Secretion of which gland give nutrition to spermatozoa?

55 / 65

Yeast is used for-

56 / 65

What are called different stage of gene?

57 / 65

Poly-mares chain reaction is useful in

58 / 65

How many kinds of nucleic acid are there?

59 / 65

the formation of mRNA is in-

60 / 65

Replication of DNA is-

61 / 65

which one is used for insulin in following by Hereditary engineering ?

62 / 65

How formed lagging strand  in DNA replication?

63 / 65

leydig cell secrets-

64 / 65

Semen of ox is reserve in-

65 / 65

Which one is present on transfer of RNA?

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