Tag: evs

Quizzes (439) Questions (4580)

Questions Related to evs

Multiple choice evs animals- nature's gift animal and habitat wonderful world of bholu food material and source

Sealing wax is

  1. Vegetable wax

  2. Hard paraffin wax

  3. Shellac

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

Sealing wax is a wax material of a seal which, after melting, hardens quickly forming a bond that is difficult to separate without noticeable tampering. Typically these are a mixture of wax and resin; usually beeswax and shellac.

So, the correct answer is 'Shellac'.

Multiple choice evs animals- nature's gift animal and habitat wonderful world of bholu food material and source

Which of the following animal is used for the domestic purpose?

  1. Fish

  2. Parrot

  3. Duck

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

Horse is used for domestic purpose. It is used as means of transport. It is also used as draught animals  on fields. It is also used for racing and riding. The milk produced by the female horse is known as mare. It is rich in whey protein, polyunsaturated fatty acids and vitamin C.

Fish is aquatic animals and it is not used for domestic purpose. Parrot and duck are the birds which is not used for domestic purpose.
So, the correct answer is option D.

Multiple choice evs fertility of the soil crop yield improvement food supply crop improvement methods and organisations

What is the advantage of crop rotation?

  1. Getting different kinds of crops

  2. Increasing the quality of minerals

  3. Increasing the fertility of soil

  4. Increasing the quality of proteins
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Crop rotation is a traditional practice of growing different crops in the same area, so as to increase the fertility of the soil. 
  • This process helps to build up the lost nutrients of the soil and when the rotation is done with growing cereals, it replenishes the nitrogen levels of the soil because crop rotation is mostly done by using legumes and paddy crops.
So, the correct answer is option C.
Multiple choice evs life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

The seeds respirate at the time of germination.White showing this experiment a test tube with KOH is kept in the conical flask to _____________. 

  1. Supply oxygen necessary for respiration.
  2. create space in the conical flask by absorbing $CO _3$.

  3. absorb water from the seeds and dry them

  4. make the air in the conical flask acidic
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice evs life within the seed developmental journey of seed introduction to plant organs and germination seed to plants

Which of the following members of spermatophyte is able to produce seed but not cones?

  1. Eucalyptus and Wolfia

  2. Pinus & Cycas

  3. Pteris & Dryopteris

  4. Eucalyptus & Pinus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Spermatophytes are seed-bearing plants. Eucalyptus is an angiosperm (flowering plant) and Wolffia is an angiosperm; both produce seeds but do not produce cones, as cones are characteristic of gymnosperms like Pinus and Cycas.

Multiple choice evs receding water table patterns of cropping rotation of crops common irrigation systems

Water from rivers is the only source for irrigation in the fields

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Irrigation is the application of controlled amounts of water to plants at needed intervals. Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall.
  • Sources of irrigation water include groundwater, through springs or wells, surface water, through rivers, lakes, or reservoirs, or even other sources, such as treated wastewater or desalinated water.
  • Hence Water from rivers is the only source for irrigation in the fields is a false statement.
  • So, the correct answer is 'False'.
Multiple choice evs receding water table patterns of cropping rotation of crops common irrigation systems

Of the following all are the traditional method of irrigation except

  1. Chain pump

  2. Pulley system

  3. Persian wheel

  4. Basin irrigation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Basin irrigation is a type of surface irrigation especially in regions with layouts of small fields having level surfaces and surrounded by low bunds which prevent the water from flowing to the adjacent fields. This method is generally suitable for crops that are unaffected by standing water for long periods. for e.g., rice cultivation areas.
Chain pump, pulley system, and persian wheel belongs to the traditional system of irrigation.
So, the correct answer is option D.
Multiple choice evs transportation in animal and plants blood transfusion transfusion of blood blood and organ donation

The device used by the doctor to amplify the heartbeat is

  1. Periscope

  2. Thermometer

  3. Stethoscope

  4. Microphone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The stethoscope is an acoustic (hearing) medical device used for auscultation (listening of internal sounds of the body. The doctor will place a small metal circle called a bell, against the chest, at the spot where a person can feel the heartbeat. Hence the device used by the doctor to amplify the heartbeat is stethoscope.
So, the correct answer is 'Stethoscope'.