Home
Class 12
BIOLOGY
Following are the two statements regardi...

Following are the two statements regarding the origin of life
(i) The earliest organisms that appeared on the earth were non-green and presumably anaerobes
(ii) The first autotrophic organisms were the chemoautotrophs that never released oxygen
Of the above statements which one of the following options is correct?

A

Both (a) and (b) are false.

B

(a) is correct but (b) is false.

C

(b) is correct but (a) is false.

D

Both (a) and (b) are correct.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • AIPMT-(2015)(conducted by CBSE)(solved paper

    TRUEMAN BIOLOGY|Exercise MCQs|90 Videos

Similar Questions

Explore conceptually related problems

Following are the two statements regarding the origin of life : A. " " The earliest organisms that appeared on the earth were non-green and presumably anaerobes. B. " " The first autotrophic organisms were the chemoautotrophs that never relesed oxygen. Of the above statements which one of the following options is correct ?

Given below are the following statements regarding actin (i) Is the main constituent of light band (ii) Forms the Anisotropic band on its own (iii) Are te thicker filaments Are a part of the H zone. Choose the correct option

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen (iii) Chemosnthetic autotrophic bacteria synthesise cellulose from glucose (iv) Mycoplasma lack a cell wall and can survive without oxygen The correct statements are

Consider the following four statements (i-iv) regarding kidney transplant and select the two correct ones out of these. (i) Even if a kidney transplant is proper the recipient may need to take immunosuppressants for a long time (ii) The cell mediated immune response is responsible for the graft rejection (iii) The B-lymphocytes are responsible for rejection of the graft (iv) The acceptance or rejection of a kidney transplant depends on specific interferons The two correct statements are:

Read the statements given below with regard to the function performed by Golgi apparatus I. Transport and chemically modify the material contained within it. II. Stores and synthesizes fats. III. Secrets slime in the insectivorous plants Which of the following is the correct answer ?

Read the following statements regarding the mineral nutrition in plants (1) For the elements that are actively mobilized within the plants, the deficiency symptoms tend to appear first in the young tissues. (2) Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes. (3) Manganese inhibits calcium traslocation in shoot apex. (4) Rhodospirillum is aerobic free-living nitrogen fixing microbe. Which of these are correct

Read the following statements (i) the point of bifurcation of trachea is called carina and is at the level of 5th thoracic vertiebra (ii)the right bronchus is shorter wider and more in line with trachea than the left bronchus (iii) the bronchioles are without cartilaginous rings (iv) the surfactant of lungs is secrated in infants between 6th and 7th month of life which of these are correct ?

Read the following statements regarding muscle contraction (i) One ATP utillised for making and breaking of the cross bridge. (ii) The sarcomere lies between 2 Z-lines (iii) Troponin blocks the active sites in resting stage (iv) Ca^(++) ions help in unmasking active sites on HMM Choose the correct option

TRUEMAN BIOLOGY-(AIPMT(NEET Phase-1)-2016)(Conducted by CBSE on 01-05-2016)(Solved Paper)-MCQs
  1. Which of the following statements is wrong for viroids

    Text Solution

    |

  2. Analogous crgans are a result of

    Text Solution

    |

  3. Select the incorrect statement

    Text Solution

    |

  4. Which one of the following characteristics is not shared by bird...

    Text Solution

    |

  5. Which of the following statements is not correct ?

    Text Solution

    |

  6. Seed formation without fertilization in flowering plants involes the p...

    Text Solution

    |

  7. Which of the following approaches does not give the defined action of ...

    Text Solution

    |

  8. The amino acid Tryptophan is the precursor for the synthesis of

    Text Solution

    |

  9. A river with an inflow of domestic sewage rich in organic waste may r...

    Text Solution

    |

  10. Gause's principle of competitive exclusion states that

    Text Solution

    |

  11. Asthma may be attributed to

    Text Solution

    |

  12. The standard petal of a papilionaceous corolla is also called

    Text Solution

    |

  13. Which of the following is a restriction·endo- nuclease

    Text Solution

    |

  14. Is is much easier for a small animal to run uphill than for a large an...

    Text Solution

    |

  15. Following are the two statements regarding the origin of life (i) Th...

    Text Solution

    |

  16. A cell at telophase stage is observed by a student in a plant brought ...

    Text Solution

    |

  17. Depletion of which gas in the atmosphere can lead to an increaed incid...

    Text Solution

    |

  18. Joint Forest Management Concept was introduced in India during

    Text Solution

    |

  19. Which one of the following is the starter codon?

    Text Solution

    |

  20. The term ecosystem was coined by

    Text Solution

    |