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An Assertion (A) and a Reason (R) are given below. Assertion (A) : Earthworms are not good for agriculture. Reason (R) : Earthworms break down the soil into fine particles and make it soft. Choose the correct option.

An Assertion (A) and a Reason (R) are given below. Assertion (A) : Earthworms are not good for agriculture. Reason (R) : Earthworms break down the soil into fine particles and make it soft. Choose the correct option. Correct Answer A is false but R is true

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Select from the following, the reasons of considering the earthworms as the friends of the farmers: A) Earthworms soften the soil of the field in which they live by digging the soil underneath. B) The tunnels dug by earthworms provide easy passage for air and water into the soil. C) The earthworms eat the weeds and save the main crop. D) The earthworms eat the dead leaves and plants. The dropping of the earthworms makes the soil more fertile. The correct statements are
An assertion and a reason are given below. Assertion: The phenomenon of nuclear fission generates great energy. Reason: The process in which a nucleus is broken into two parts is called nuclear fission. Choose the answer. A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion. B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. C. Both Assertion and Reason are false. D. Assertion is true but Reason is false.
Consider the following statements about the earthworms: A. Earthworm make tunnels in the fields which provide easy passage to air and water into the soil. B. Earthworms soften the soil by digging underneath. C. Earthworms save the main crops from weeds. D. The droppings of the earthworms fertilise the soil. The true statements are
Characteristics of 3 types of soil A, B and C are given below. Which of these is best for growing wheat?  Soil type Particle proportion Water retaining property A Large number of big particles Low B Large numbers of fine particles High C About same number of big and fine particles Moderate
Dhanu, Fani, Ganu and Tinu were playing cricket. One of them threw the ball on window by mistake and glass was broken. They all know who has done this and each one makes a statement about this. Select the person who has done the mistake if only one of them is making true statement. Dhanu : I didn't make the mistake and Ganu also didn't break it. Fani : I didn't make the mistake and Dhanu also didn't break it. Ganu : I didn't make the mistake and Fani also didn't break it. Tinu : I didn't make the mistake and Dhanu also didn't break it.
The critical reasoning question is based on a short argument, a set of statements, or a plan of action. For each question, select the best answer of the choices given. The size of particles is directly linked to their potential for causing health problems. Small particles less than 10 micrometers in diameter cause the greatest problems, as they can get deep into the lungs and some may get into the bloodstream. One being exposed to such particles can affect both the lungs and the heart of a person. But there are particles that are causing environmental effects too, few of which are given below.  Which among the following below options does not talk about the effects of these particles on the environment?
The rate of infiltration normally declines rapidly during the early part of rainstorm event and reaches a constant value after several hours of rainfall. The factors responsible for this phenomenon are I. the filling of fine soil pores with water, which reduces capillary forces II. moistened soil, clay particles to swell and reduce the size of pores III. raindrop impact breaking up with soil clumps, splashing fine particles into pores
The rate of infiltration normally declines rapidly during the early part of rainstorm event and reaches a constant value after several hours of rainfall. The factors responsible for this phenomenon are
  1. I. the filling of fine soil pores with water, which reduces capillary forces
  2. II. moistened soil, clay particles to swell and reduce the size of pores
  3. III. raindrop impact breaking up with soil clumps, splashing fine particles into pores
Consider the following statements about earthworms: A. They soften the soil as they keep digging underneath to make tunnels. B. They eat the dead leaves and plants and their droppings fertilise the soil. C. They turn the waste into compost. D. They produce compost which is costlier than the fertilizers made in factories. E. Spraying chemicals (pesticides) does not affect the earthworms. The true statements are
Which of the following statements with regard to the Mediterranean agriculture is/are correct? 1. The Mediterranean agriculture is highly specialized commercial agriculture. 2. It is intensive subsistence agriculture dominated by wet paddy cultivation. 3. It is primitive subsistence agriculture. 4. Viticulture is a speciality of the Mediterranean region. Select the correct answer using the code given below.