Home
Class 12
BIOLOGY
Toxicity of manganese in a plant result ...

Toxicity of manganese in a plant result in a. Brown spot surrounded by chlorotic veins, b. Increases in uptake of Fe, c. Inhibition of Ca translocation in shoot apex

A

Only a

B

Both a and b

C

Only c

D

Both a and c

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • TEST 5

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|625 Videos

  • TEST 4

    AAKASH INSTITUTE ENGLISH|Exercise TYPE |1 Videos

  • TEST 6

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|712 Videos

Similar Questions

Explore conceptually related problems

Brown leaf spots surrounded by chlorotic veins are charactersied by :

A plant exhibits the appearance of brown spots surrounding by chlorotic veins. When inspected in more detail , it is observed that its calcium translocation to the shoot is also disrupted. The plant is showing toxicity of

Assertion: The prominent symptom of manganese toxicity is the appearance of brown spots surrounded by chlorotic veins. Reason: Excess of maganese may induce deficiencies of iron, magnesium and calcium.

State true or false : (i) In the initial phase of absorbation of elements the ions are absorbed passively. (ii) Deficiency of manganese leads to inhibition of Ca translocation to shoot apex.

A : Maganese toxicity cause brown spots ,chlorotic veins and inhibintion of calcium translocation to shoot apex. R : Toxic effects may be due to direct excess of micronutrients or its interference in the absorbtion and functioning of other nutrients.

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 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

Increase in concentration of substrate in case of competitive inhibition results in (a) No change in rate of reaction (b) Increase in rate of reaction to original V_max (c) Decrease in K_m value of the enzyme (d) Both (b) & (c)

Which of the following statement are false ? (a) Most cells are tiny with volume range of 1-100 nm^(3) (b) Some cells have microvilli to increases the absorptive surface area (c) All cells arise from pre-existing cells (d) In plants, translocation of solutes is performed by xylem vessels and tracheids (e) According to cell theory, all cells arise from abiotic material

Mycorrhiza does not help the host plant in (a) Enhancing its phosphorus uptake capacity (b) Increasing its tolerance to drought (c) Enhancing its resistance to root pathogens (d) Increasing its resistance to insects

AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
  1. Identify the element on the basis of given statements a. Its deficency...

    Text Solution

    |

  2. Chosse the odd one w.r.t the elements which help in maintainig cation-...

    Text Solution

    |

  3. Toxicity of manganese in a plant result in a. Brown spot surrounded by...

    Text Solution

    |

  4. Movement of ions into symplast area of a plant cell

    Text Solution

    |

  5. 2NH3 + 3O2 2NO2- + 2H+ + 2H2O The organism responsible for th...

    Text Solution

    |

  6. Enzyme nitrogenese will be absent in

    Text Solution

    |

  7. The region of nodule where Rhizobium is active lacks

    Text Solution

    |

  8. Read the following statements and mark them as True (T) or False (F) A...

    Text Solution

    |

  9. A + NH 4 + B rightarrow C -Glutamate + H2O + D complete the above ...

    Text Solution

    |

  10. Read the following statements and choose the correct option A: Aspara...

    Text Solution

    |

  11. Mark the odd statement for ureides

    Text Solution

    |

  12. Which of the following is not a benefit of hydroponics

    Text Solution

    |

  13. Defeciency of which element is not responsible for death of leaf tissu...

    Text Solution

    |

  14. Mark the incorrect match.

    Text Solution

    |

  15. Elements found in ferredoxin are

    Text Solution

    |

  16. Chlorophyll synthesis will be largely affected due to deficiency of wh...

    Text Solution

    |

  17. T.W. Engelmann prepared the first action spectrum of photosynthesis by...

    Text Solution

    |

  18. A pigment appears yellow-orange in the chromatogram and found in leave...

    Text Solution

    |

  19. which of the given statements are true regarding PS I and PS II? a. bo...

    Text Solution

    |

  20. the condition(s) under which cyclic photophosphorylation occurs is/a...

    Text Solution

    |