SEBA Class 9 Solanaceous Crop Cultivator Chapter 4 Soil Nutrient Management in Vegetable Crops

SEBA Class 9 Solanaceous Crop Cultivator Chapter 4 Soil Nutrient Management in Vegetable Crops Solutions English Medium, SEBA Class 9 Solanaceous Crop Cultivator Question Answer, SEBA Class 9 Solanaceous Crop Cultivator Chapter 4 Soil Nutrient Management in Vegetable Crops Question Answer to each chapter is provided in the list so that you can easily browse throughout different chapter SEBA Class 9 Solanaceous Crop Cultivator Chapter 4 Soil Nutrient Management in Vegetable Crops English Medium Solutions and select needs one.

SEBA Class 9 Solanaceous Crop Cultivator Chapter 4 Soil Nutrient Management in Vegetable Crops

Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. SEBA Solanaceous Crop Cultivator Elective Class 9 Question Answer. These solutions are part of SCERT All Subject Solutions. Here we have given SEBA Class 9 Solanaceous Crop Cultivator Chapter 4 Soil Nutrient Management in Vegetable Crops Solutions for All Chapter, You can practice these here.

Soil Nutrient Management in Vegetable Crops

Chapter – 4

Session – 1: Macro and Micro-nutrients in Soil System

Check Your Progress

(A) Fill in the Blanks: 

1. Compounds made up of carbon, hydrogen and oxygen together are called _________________. 

Ans: Carbohydrates.

2. Plants obtain carbon, hydrogen and _________________ from air and water. 

Ans: Oxygen.

3. Micro-nutrients are also known as minor or _____________ elements. 

Ans: Trace.

4. The function of _________________ is to give dark green colour and improve the quality of foliage. 

Ans: Nitrogen.

5. Stimulating root formation and their healthy growth are the functions of _________________. 

Ans: Phosphorus.

6. Calcium is an important constituent of the _____________. 

Ans: Cell wall. 

7. Magnesium helps in _________________ assimilation. 

Ans: Fats.

8. Zinc fastens the rate of _________________ in plants. 

Ans:Maturity.

9. Manganese is involved in the _________________ process of photosynthesis. 

Ans: Oxidation-reduction.

10. Nitrogen fixation and nitrate assimilation are the functions of _________________.

Ans: Molybdenum.

(B) Multiple Choice Questions:

1. _________________ essential elements are required for plant growth and development. 

(a) 15    

(b) 16    

(c) 17    

(d) 18 

Ans: (c) 17

2. _________________ are the micro-nutrients. 

(a) Ca, Mg, S.

(b) N, P, K. 

(c) C, H, O.

(d) Zn, Cu, B

Ans:  (d) Zn, Cu, B.

3. ____________ helps in the synthesis of the bases of RNA.

(a) Boron.

(b) Molybdenum.

(c) Chlorine.

(d) All of the above. 

Ans: (b) Molybdenum.

4. Molybdenum in plant is necessary for _________________. 

(a) Protein synthesis.

(b) Photosynthesis.

(c) Chlorophyll.

(d) Nitrogen fixation. 

Ans: (d) Nitrogen fixation.

5. Deficiency of boron results in _________________. 

(a) Loss of apical dominance.

(b) Rosette appearance.

(c) Syrupy exudation from the leaf blade.

(d) All of the above.

Ans: (d) All of the above.

(C) Descriptive Questions: 

1. What are the criteria of essentiality of nutrients?

Ans: There are a total of 17 nutritive elements, which are necessary for the growth of plants. All elements are equally important irrespective of their requirement or presence in a plant. 

According to Arnon and Stout (1939), an element must meet the following three criteria:

(i) A plant cannot complete its life cycle in the absence of that mineral element.

(ii) The element is specific and cannot be replaced. 

(iii) The element must be directly involved in plant metabolism.

2. What are micro and macro-nutrients? Give examples. 

Ans: Macronutrients: These are the nutrients required in large amounts by plants for their growth and development.

Examples: 

This is further divided into:

(i) Primary nutrients: These consist of Nitrogen, Phosphorus and Potassium. These nutrients are supplied through fertilisers. 

(ii) Secondary nutrients: They include Calcium, Magnesium and Sulphur.

(iii) Micro-nutrients: These are the nutrients required in very small (trace) amounts, but are still essential for plant health.

Examples: 

They include: Iron (Fe), Manganese (Mn), Copper (Cu), Zinc (Zn), Chlorine (Cl), Boron (B) Molybdenum (Mo) and Nickel (Ni). 

3. What are the important functions of nitrogen. Write its deficiency symptoms.

Ans: Functions: 

(a) Promotes the growth of leaves and stems. 

(b) Enhances the dark green colour in plants and improves the quality of foliage. 

(c) Necessary for the development of cell protein and chlorophyll. 

(d) Improves the uptake and assimilation of other nutrients, like phosphorus, potassium, magnesium and sulphur. 

Deficiency symptoms: 

(a) Loss of vigour and yellowing of green parts.

(b) Shortening of the stem, leaves become paler and remain small in size.

(c) Slow growth and a plant becomes dwarf.

(D)  Match the Columns:

Nutrients	Functions/deficiency causes
1. Phosphorus	(a) Synthesis of the bases of RNA
2. Potassium	(b) Nitrogen fixation and nitrate assimilation
3. Sulphur	(c) Synthesis of chlorophyll
4. Calcium	(d) Assimilation of fats
5. Magnesium	(e) Tryptophan
6. Zinc	(f) Failure of terminal bud development
7. Iron	(g) Reddening of stems and inward curling of leaves
8. Molybdenum	(h) Dark bluish green leaves
9. Boron	(i) Curled up and purplish in colour

Ans: 

Nutrients	Functions/deficiency causes
1. Phosphorus	(e) Tryptophan
2. Potassium	(g) Reddening of stems and inward curling of leaves
3. Sulphur	(d) Assimilation of fats
4. Calcium	(f) Failure of terminal bud development
5. Magnesium	(c) Synthesis of chlorophyll
6. Zinc	(h) Dark bluish green leaves
7. Iron	(i) Curled up and purplish in colour
8. Molybdenum	(b) Nitrogen fixation and nitrate assimilation
9. Boron	(a) Synthesis of the bases of RNA

Session – 2: Manures and Fertilisers

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