Tag: deficiency symptoms

Quizzes (0) Questions (19)

Questions Related to deficiency symptoms

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

Chlorosis, i.e., loss of chlorophyll leading to yellowing in leaves, is caused by the deficiency of 

  1. N, K, Mg

  2. S, Fe, Zn

  3. Mn, Mo, Mg

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chlorosis is a symptom caused by the deficiency of various essential mineral elements, including Nitrogen, Potassium, Magnesium, Sulfur, Iron, Zinc, Manganese, and Molybdenum, which are all required for chlorophyll synthesis or stability.

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

While in N, K and Mg deficiency, chlorosis appears first in _____ leaves; in S and Ca deficiency,_____ leaves are the first to be affected.

  1. Young, old

  2. Old, young

  3. Old, old

  4. Young, young
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Elements like N, K, and Mg are mobile in plants, so they are transported to young leaves when deficient, causing symptoms to appear first in old leaves. S and Ca are relatively immobile, so deficiency symptoms appear first in young leaves.

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

Deficiency symptoms of radially mobilised essential elements will first appear in _________

  1. Younger tissues

  2. Older tissues

  3. Roots

  4. Shoots
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When essential elements are mobile (radially or systemically), the plant redistributes them from older tissues to younger, actively growing tissues. Therefore, deficiency symptoms for these elements appear first in older tissues.

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

Necrosis mainly occurs by the deficiency of  

  1. Ca, Mg

  2. N, S

  3. Mn, Mo

  4. Fe, Mn
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Necrosis, or the death of plant tissue, is commonly caused by the deficiency of minerals like calcium, magnesium, copper, and potassium. Among the choices, calcium and magnesium are well-documented elements whose deficiency leads to localized tissue death.

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

Premature leaf fall is due to deficiency of 

  1. Sodium

  2. Potassium

  3. Zinc

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

Premature leaf fall is a classic symptom of phosphorus deficiency in plants. Phosphorus is mobile within the plant, and its lack disrupts energy transfer and metabolic processes, leading to early senescence and abscission.

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.