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Question 381

AP Police SI 2018• Test

Assertion (A): To control carbon monoxide pollution catalytic converters are used in the automobiles.”

Reason (R): They reduce of the emission of poisonous gases.

  1. AOption (a)

    Both (A) and (R) are true. (R) is correct explanation for (A).

  2. BOption (b)

    Both (A) and (R) are true. (R) is not correct explanation for (A)

  3. COption (c)

    (A) is true but (R) is false

  4. DOption (d)

    (A) is false but (R) is true

View answer & explanation

Correct answer

Answer: (a)A.

Both (A) and (R) are true. (R) is correct explanation for (A).

Explanation not yet available.

Question 382

AP Police SI 2018• Test

Natural mutations in plants and animals were first observed by 

  1. AOption (a)

    Stadler

  2. BOption (b)

    Hugo devries

  3. COption (c)

    Bateson

  4. DOption (d)

    Muller

View answer & explanation

Correct answer

Answer: (a)A.

Stadler

Explanation not yet available.

Question 383

AP Police SI 2018• Test

The term 'Ecological pyramid' was introduced by 

  1. AOption (a)

    Charles Darwin

  2. BOption (b)

    E.P. Odum

  3. COption (c)

    E. Warming

  4. DOption (d)

    Charles Elton

View answer & explanation

Correct answer

Answer: (a)A.

Charles Darwin

Explanation not yet available.

Question 384

AP Police SI 2018• Test

Choose the living organisms that are being used as biocontrol agents.

  1. Bacillus thuringiensis

II) Trichoderma

III) Dragon fly

IV) Tungro virus

  1. AOption (a)

    I, II & IV

  2. BOption (b)

    I, III & IV 

  3. COption (c)

    I, II & III

  4. DOption (d)

    II, III & IV

View answer & explanation

Correct answer

Answer: (a)A.

I, II & IV

Explanation not yet available.

Question 385

AP Police SI 2018• Test

Phosphodiester bonds are seen in the following biomolecules

I) DNA

II) Lipids

III) Carbohydrates

IV) RNA

  1. AOption (a)

    I & II

  2. BOption (b)

    I & III

  3. COption (c)

    I & IV

  4. DOption (d)

    II & IV

View answer & explanation

Correct answer

Answer: (a)A.

I & II

Explanation not yet available.

Question 386

AP Police SI 2018• Test

Study the following pyramids of numbers and identify the shape of the pyramid.

A) Banyan tree → Insects → Parasites on insects

B) Grass plants → Rabbits → Wolf

  1. AOption (a)

    ​'A' is inverted and 'B' is upright

  2. BOption (b)

    ​'A' is upright and 'B' is inverted

  3. COption (c)

    ​Both 'A' and 'B' are inverted

  4. DOption (d)

    ​Both 'A' and 'B' are upright

View answer & explanation

Correct answer

Answer: (a)A.

​'A' is inverted and 'B' is upright

Explanation not yet available.

Question 387

AP Police SI 2018• Test

Assertion (A): Fewer the steps in the food chain, more energy will flow to the species of higher trophic level.

Reason (R): Energy loss during transformation from one tropic level to the next will be minimized.

  1. AOption (a)

    Both (A) and (R) are correct; (R) is correct explanation for (A).

  2. BOption (b)

    Both (A) and (R) are correct; (R) is not correct explanation for (A)

  3. COption (c)

    (A) is correct and (R) is wrong

  4. DOption (d)

    (A) is wrong and (R) is correct

View answer & explanation

Correct answer

Answer: (a)A.

Both (A) and (R) are correct; (R) is correct explanation for (A).

Explanation not yet available.

Question 388

AP Police SI 2018• Test

Assertion (A): Conversion of solid nitrates (\(NO_3^-\)) into gaseous Nitrogen (N2) by bacteria is called denitrification.

Reason (R): Denitrifying bacteria grow in wet soils.

  1. AOption (a)

    Both (A) and (R) are correct; (R) is correct explanation for (A).

  2. BOption (b)

    Both (A) and (R) are correct; (R) is not correct explanation for (A) 

  3. COption (c)

    (A) is correct and (R) is wrong

  4. DOption (d)

    (A) is wrong and (R) is correct

View answer & explanation

Correct answer

Answer: (a)A.

Both (A) and (R) are correct; (R) is correct explanation for (A).

Explanation not yet available.

Question 389

AP Police SI 2018• Test

Identify the incorrect matches from the following

S.No.Oceanic zonesLight intensityTemperatureLiving organisms
IEuphotic zoneDimly lightupto 30°CPlankton, Dolphins
IIBathyal zoneBright light4°-39° CBrown algae, whales
IIIAbyssal zoneDark2°-3° CBrittle star, Tripod Fish
  1. AOption (a)

    I & III

  2. BOption (b)

    I & II

  3. COption (c)

    II & III

  4. DOption (d)

    III

View answer & explanation

Correct answer

Answer: (a)A.

I & III

Explanation not yet available.

Question 390

AP Police SI 2018• Test

Assertion (A): 'SRI' in SRI vari is 'System of Rice Intensification'.

Reason (R): Any rice variety can be cultivated as semi arid using less amount of seed and less water.

  1. AOption (a)

    Both (A) and (R) are correct; (R) is correct explanation for (A).

  2. BOption (b)

    Both (A) and (R) are correct; (R) is not correct explanation for (A).

  3. COption (c)

    (A) is correct and (R) is not correct.

  4. DOption (d)

    (A) is not correct and (R) is correct.

View answer & explanation

Correct answer

Answer: (a)A.

Both (A) and (R) are correct; (R) is correct explanation for (A).

Explanation not yet available.
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