Tag: mineral nutrition in plants

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Questions Related to mineral nutrition in plants

Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Necrosis refers to 

  1. Inhibition of cell division

  2. Delay in flowering

  3. Death of tissues

  4. Falling of leaves
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a living organism's cells or tissues die or degenerate, the condition is called necrosis. In a plant, necrosis causes leaves, stems and other parts to darken and wilt. Necrosis weakens the plant and makes it more susceptible to other diseases and pests. 

Thus, the correct answer is 'Death of tissues.'

Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Absence of light during plant growth, result in pale colour seeds known as:

  1. Photogenesis

  2. Phototonic effect

  3. Etiolation

  4. Photomophogenesis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Seedlings grown in the dark develop long hypocotyl and their cotyledons remain closed around the epicotyl in an apical hook. This is referred to as skotomorphogenesis or etiolation. Etiolated seedlings are yellowish in color as chlorophyll synthesis and chloroplast development depend on light

So the correct answer is 'Etiolation'.

Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Which combination of statement is correct?
i. Biosynthesis of nucleorides,proteins and fatty acids takes place in the cytoplasm.
II. Nucleolus is present in the cytoplasm.
iii. Golgi apparatus helps in the forrmation of lysosomes.
iv. Flattened sacs of golgi apparatus is known as cisternae.
v. Ribsomes are not found in prokaryotic cells.

  1. $i,iii \quad and \quad v$
  2. $ii,iii,iv \quad and \quad v$
  3. $i,iii \quad and \quad iv$
  4. $ii,iii \quad and \quad v$

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The biosynthesis of nucleotides, proteins and fatty acids occur in the cytosol of the cell. 

The nucleolus is a dense spheroidal body situated within the nucleus. 
Golgi apparatus stores lysosome enzyme produced by the endoplasmic reticulum and further buds off as small vesicles to develop lysosomes. 

Golgi complex is a membrane-bound organelle that is present in eukaryotic cells that are composed of stacks of flattened and membrane-bound bodies, called cisternae. 
Ribosomes are found in both prokaryotic and eukaryotic cells. 
So, the correct answer is option C. 


Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Deficiency symptons of nitrogen and potassium are visible first in.

  1. Young leaves

  2. Roots

  3. Buds

  4. Senescent leaves
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nitrogen and potassium are mobile elements within the plant. When they are deficient, the plant translocates these nutrients from older, senescent leaves to younger, growing tissues, causing the deficiency symptoms to appear first in the older leaves.

Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Apoptosis is programmed cell death characterised by the formation of apoptotic bodies whereas necrosis characterised by bursting of cells. Which of the following condition/s lead/s to necrosis ?
i) Gaps and nicks formed in DNA during replication cannot be repaired.
(ii) Developing neurons fail to make synapses with neighbouring cells.
(iii) Heart muscle cells damaged by oxygen depletion followed by cardiac infarction. 

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (i) only

  4. (iii) only
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Which one of the following statements can best explain the term critical concentration of an essential element? 

  1. Essential element concentration below which plant growth is retarded

  2. Essential element concentration below which plant growth becomes enhanced

  3. Essential element concentration below which plant remains in the vegetative phase

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Critical Concentration is the term which is used to define the concentration of essential elements below which the growth of plant is Retarded or Reduced. Also, if the concentration of essential elements rise above the critical concentrations.  it leads to Toxicity. So, the correct answer is "Essential elements concentration below which plant growth is retarded."