Agriculture Questions and Answers – Evapo-Transpiration

This set of Agriculture Multiple Choice Questions & Answers (MCQs) focuses on “Evapo-Transpiration”.

1. Which of the following is not a feature of Watershed Mangement Programme?
a) Soil and Water Conservation Measures
b) Scientific Dry Farming
c) Animal Husbandry and development of dairy
d) Escaping Drought
View Answer

Answer: d
Explanation: In soil and water conservation measures emphasis is given on soil surveying, contour and graded bunding, land reclamation, digging of farm ponds. Scientific Dry Farming includes Contour Ploughing, Deep Ploughing, Mulching, Development of new varieties according to agro-climatic zones.

2. The following diagram is an example of ____________

a) Inter row water harvesting
b) Inter plot water harvesting
c) Microplot water harvesting
d) Water harvesting in ponds
View Answer

Answer: a
Explanation: Inter-row water harvesting is practiced in arid region with light soil where annual rainfall does not exceed 400-450mm. The crop is sown in narrow strips between wide intervals that are ridged as artificial miniature watersheds.

3. A chemical when applied in soil, improves the aeration, infiltration and water holding capacity of the soil ___________
a) Jalshakti
b) Jaldhan
c) Shakti
d) Manthan
View Answer

Answer: a
Explanation: Jalshakti is a chemical which is useful to increase various physical properties of the soil.

4. Which of the following is not a way to reduce Evapo-transpiration losses?
a) Mulches
b) Antitranspirants
c) Wind Breaks
d) Photosynthates
View Answer

Answer: d
Explanation: Mulches are most commonly used to reduce Evaporation loss from the soil surface. Antitranspirants are used to reduce water loss from the plant. Windbreaks are the structures which break the wind flow and reduce the wind speed.

5. Phenyl mercuric acetate is an example of which type of antitranspirants?
a) Stomatal Closing Type
b) Film Forming Type
c) Reflecting Type
d) Growth Retardants
View Answer

Answer: a
Explanation: Phenyl mercuric acetate is an example of Stomatal Closing Type of Antitranspirant. Such Antitranspirants reduce water loss through stomatal closing.

6. Which of the following is not an example of Stomatal type of antitranspirant?
a) Atrazine
b) Absisic Acid
c) Carbon Dioxide
d) Kaolin
View Answer

Answer: d
Explanation: Kaolin is a typical example of reflecting type of antitranspirant. Application of 5% Kaolin spray reduces transpiration loss.

7. Which of the following is example of reflecting type of Film Forming antitranspirant?
a) Celite
b) Atrazine
c) Mobileaf
d) Kaolin
View Answer

Answer: c
Explanation: Mobileaf is an example of Film forming type of antitranspirant. Such antitranspirant retard moisture loss due to formation of thin film as physical barrier.

8. Chemicals which reduce shoot growth and root growth and thus enable the plants to resist drought ___________
a) Reflecting Type of antitranspirant
b) Growth Retardant Type of antitranspirant
c) Stomatal Closing Type of antitranspirant
d) Film Forming Type of antitranspirant
View Answer

Answer: b
Explanation: Example of Growth Retardent type of antitrasnpirant is Cycoel. Antiranspirant generally reduce photosynthesis. Therefore their use is limited to save the crop from death under severe moisture stress. They have some practical use in nurseries and horticultural crops.

9. What is the most limiting factor in dryland agriculture?
a) Soil Texture
b) Soil Structure
c) Soil Moisture
d) Wind Erosion
View Answer

Answer: a
Explanation: Soil Moisture is a most limiting factor in dryland agriculture. About 60-75% of the rainfall is lost through evaporation. We use mulches to cover soil surface to retain soil moisture.

10. The rows of trees or shrubs planted for protection of crop against the wind is called as ____________
a) Windbreaks
b) Shelterbelts
c) Mulch
d) Protector
View Answer

Answer: b
Explanation: Shelterbelts provide a protective shelter against wind and suitable habitat for birds and honeybees as well as produce cattle feed and fuelwood.

Sanfoundry Global Education & Learning Series – Agriculture.

To practice all areas of Agriculture, here is complete set of Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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