Wednesday, 29 August 2018

Class 9 - Biology - Improvement in Food Resources - Agriculture Improvements (Very Short Questions and Answers) (#cbsenotes)(#eduvictors)

Improvement in Food Resources - Agriculture Improvements 

Class 9 - Biology - Improvement in Food Resources - Agriculture Improvements (Very Short Questions and Answers) (#cbsenotes)(#eduvictors)

(Very Short Questions and Answers) 



Q1: Define crop.

Q2: Name the two major problems for food requirements due to overpopulated country like India?

Q3: Give two examples of scientific management practices to obtain a high yield of crops.
Q4: What are integrated farming practices?

Q5: Give three examples of cereals? Which type of major nutrient do they provide?

Q6: Lentils are rich in ________. Lentils, black gram (urad), green gram (moong) are collectvely called _________.

Q7: Give three examples of oilseeds? Name the major nutrient provided by them.

Q8: What do vegetables, spices and fruits provide?

Q9: What are fodder crops? Give three examples of fodder crops.

Q10: Define photoperiodism. What is its effect on plants?

Q11: In which season Kharif crops are grown?

Q12: Give three examples of Kharif crops.

Q13: Nutrients required in large quantities are called _________.

Three examples are: _______________________________________________

Q14: Name the nutrients provided by air to the plants.

Q15: (Fill in the blanks) Factors for which variety improvement is done:

a) H_________ : for increasing the productivity per acre.

b) ___________: quality considerations vary from crop to crop as per the requirements.

c) _______ resistance: crops should have sufficient resistance diseases, insects and nematodes.

d) ___________: the shorter the duration, the more economical is the variety.

e) ___________: it can be grown in different climatic conditions.

f)____________: tallness and profuse branching, Dwarfness etc..



Q16: Name two methods to improve crop variety.

Q17: Tallness and profused branching is desired agronomic characteristics for which type of crop?

Q18: How is quality measured in (i) wheat (ii) pulses

Q19: The crop variety produced by introducing a gene that would provide desired characteristics. Such type of crop is known as?

Q20: How many elements are essential for plant growth and reproduction? How are these classified?

Q21: Organic decomposition provide us ________ (manure/fertilizer).

Q22: Out of fertilizer and manure which one has a short-term objective?

Q23: Out of fertilizer and manure which one increases water holding capacity?

Q24: Based on the biological material used, manures are classified as ______________.

Q25: Leguminous plants like Sun-hemp or Cluster Bean are grown and then mulched give us what kind of manure? It is rich in which elements?

Q26: What are the main sources of bio-fertilizers?

Q27: Name the type of farming that uses bio-agents. What do bio-agents prepare?

Q28: Give two examples of bio-pesticides. Where are they used?

Q29: Name six sources of irrigation that must include at least two modern methods.

Q30: Identify the cropping pattern:

a) The practice of growing two or more crops simultaneously in a field

b) Growing two or more crops simultaneously with definite row patterns.

c) Growing dissimilar crops in the same area in sequential seasons.

Q31: Which cropping pattern seeks to balance the fertility demands of various crops to avoid excessive depletion of soil nutrients?

Q32: Between intercropping and mixed cropping, in which one has no competition between both crops.

Q33: Give two examples of weeds.

Q34: Name the three methods of insect pests attack plants.

Q35: Name the two weed control methods.

Q36: Name the biotic factors that lead to loss of grains in storage.

Q37: Name the abiotic factors that lead to the loss of grains in storage.

Q38: Name the three prevention and control methods used before storage of grains.

Q39: Name the preventive methods that help in weed control.

Q40: Grwoing groundnut + sunflower is an example of __________.




Answers:

1: Plants are grown on a large scale commercially.
2: hunger and malnutrition
3: mixed farming, intercropping, and integrated farming practices
4: combine agriculture with livestock/poultry/fisheries/ bee-keeping.
5: wheat, rice, maize, millets and sorghum (carbohydrates)
6: protein, pulses
7: soybean, groundnut, sesame, castor, mustard, linseed and sunflower provide us with necessary fats
8: a range of vitamins and minerals in addition to small amounts of proteins, carbohydrates and fats.
9: fodder crops like berseem, oats or sudangrass are raised as food for the livestock.
10: the response of an organism to seasonal changes in day length. Photoperiods are related to the duration of sunlight. The growth of plants and flowering are dependent on sunlight.
11: the rainy season 
12: Paddy, soybean, pigeon pea, maize, cotton, green gram and black gram are Kharif crops
13: macronutrients, nitrogen, phosphorus, potassium, calcium, magnesium, sulphur
14: C and O 
15: Higher yield, Improved quality, Biotic and abiotic resistance, Change in maturity duration, Wider adaptability, Desirable agronomic characteristics
16: Hybridisation and Genetically modified crops 
17: fodder crops
18: Baking quality of wheat, protein in pulses 
19: Genetically modified crops
20: 16. Macronutrients and Micronutrients
21: manure 
22: fertilizer 
23: manure
24: compost, vermicompost, green manure 
25: green manure, N and P
26: bacteria, cyanobacteria and fungi 
27: organic farming, bio-fertilizers
28: leaves of neem or turmeric for grain storage
29: Wells, Canals, River Lift Systems, Tanks, Rain Water Harvesting, Watershed management.
30: a) Mixed b) Intercropping c) Crop rotation
31: Crop rotation 
32: Intercropping 
33: Xanthium, Parthenium
34: (i) they cut the root, stem and leaf, (ii) they suck the cell sap from various parts of the plant, and (iii) they bore into stem and fruits.
35: Mechanical removal and chemical treatment.
36: Factors responsible for such losses are biotic— insects, rodents, fungi, mites and bacteria, and
37: abiotic— inappropriate moisture and temperatures in the place of storage.
38: Cleaning, Drying and Fumigation
39: Preventive methods such as proper seedbed preparation, timely sowing of crops, intercropping and crop rotation also help in weed control.
40: Mixed cropping




☛See also:
CH 15 - Improvement in Food Resources (Worksheet-1)
CH 15 - Improvement in Food Resources (Q & A)
CH 15 - Improvement in Food Resources (MCQs)
CH 15 - Improvement in Food resources (Agriculture)- Very Short QA