Environmental Studies · Biology

Pesticides and Pest Control

1,236 Questions

Pesticides and Pest Control focuses on the management of invasive species through chemical, biological, and cultural methods. It includes topics like integrated pest management, herbicide targets, and the ecological impacts of toxic chemicals. This subject is frequently tested in environmental science and agriculture exams.

Integrated Pest ManagementBiological Control AgentsHerbicide MechanismsChemical Pesticide ToxicityGenetic Pest ResistanceInvasive Species Management

Pesticides and Pest Control Questions

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

DDT is a _____________ pollutant

  1. Bio degradable

  2. Non bio degradable

  3. Un-biodegradable

  4. Naturally degradable
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DDT (dichlorodiphenyltrichloroethane) is a synthetic pesticide that does not break down easily in the environment. Because it persists in soil and water and accumulates in organisms, it is classified as non-biodegradable.

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

An analysis of soil sample revealed $0.1 mg$ of a pesticide and $1 mg$ of the same of pesticide was found in grains. However in the adipose tissue of birds the concentration was $2 mg$. The reason for this is the phenomenon known as

  1. Bioabsorption

  2. Biotranslocation

  3. Biomagnification

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

Biomagnification is the accumulation or increasing bioconcentration of lipophilic pesticides in the top members of the food chain. During biomagnification, the concentration of pesticides goes on increasing according to the food chain and highest values occur in the consumers of the top trophic level. So, the value of pesticide will go on increasing from the soil, to the plant and to the bird. 

Thus, the correct answer is option C. 

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

Drawback of DDT as pesticide is

  1. It becomes ineffective after some time

  2. It is less effective than others

  3. It is not easily/ rapidly degraded in nature

  4. Its high cost
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Dichlorodiphenyltrichloroethane (DDT) is an organochlorine compound used as an insecticide in agricultural fields. The major disadvantage of DDT is bioaccumulation or not easily degrading nature, due to fat solubility it is accumulated in living tissues. The human body is not able to break it which cause its build up in the food chain and causing poisoning in the animals. Its effects can be seen in birds as the production of thin eggshells vulnerable to damage.

Hence, the correct answer is 'It is not easily/rapidly degraded in nature'.

Multiple choice biology waste products reduce, recycle, reuse importance of the conservation of natural resources recycling

The phenomenon of accumulation of non-biodegradable pesticides in human beings

  1. Biomagnification

  2. Bioaccumulation

  3. Biodegradation

  4. Bioremediation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bioaccumulation is the process by which substances, such as pesticides, build up in the tissues of an individual organism over time. Biomagnification refers to the increase in concentration of these substances as they move up the food chain.

Multiple choice biology transport in plants transport of food, water and minerals theories of translocation transport in the phloem of plants

Ammonium sulphate is a

  1. Pesticide

  2. Weedicide

  3. Fertilizer

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

Ammonium sulfate is a fertilizer as it increases the fertility of soil and plants can use it for their functions.

It cannot kill pests or weeds and hence is not a pesticide or a weedicide.
Tonic chemicals are medicines given to feel vigour. Ammonium sulfate has no such function.
So the correct answer is 'Fertilizer'.

Multiple choice business organisation and correspondence waste and its management sources of waste protecting our environment rules are for everyone

The pesticides need to be replaced because these 

  1. are very costly

  2. cannot be stored for a long time

  3. are mostly toxic and non-biodegradable

  4. cause abnormalities in, the target population.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The toxicity of pesticides is affecting the human health due to excessive accumulation of the pesticides in the food. Pesticides mixed with water are non-biodegrable in nature, due to which various water borne diseases are occurring in humans. 

Multiple choice chemistry for a pollution free nature properties of soil soil pollution and its effects soil and soil pollution

Use of pesticides which do not contaminate soil help in control of ________.

  1. air pollution

  2. soil pollution

  3. industrial pollution

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Development of such pesticides should be encouraged, which may save crops from pests and rodents but should not contaminate soil with toxic chemicals.
It is a measure to control soil pollution.

Multiple choice chemistry for a pollution free nature properties of soil soil pollution and its effects soil and soil pollution

Which of the following is a soil pollutant due to agricultural practice?

  1. Pesticides

  2. Herbicides

  3. Insecticides

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pesticides are substances meant for attracting, seducing, and then destroying any pest. 
Herbicides are substances that is toxic to plants, used to destroy unwanted vegetation.
Insecticides are substances used for killing insects.
All the are used in agriculture and harmful to soil.

Multiple choice chemistry for a pollution free nature properties of soil soil pollution and its effects soil and soil pollution

 There should be sufficient duration between the harvesting of crops and time of last spray of pesticides. This is a measure to control _________.

  1. air pollution

  2. water pollution

  3. soil pollution

  4. all of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There should be sufficient duration between the harvesting of crops and time of last spray of pesticides.
It is a measure to control soil pollution.
This will help in reducing contamination of pesticides, directly to the crop. It will also cause less contamination of chloride and other chemicals to the soil.

Multiple choice chemistry for a pollution free nature properties of soil soil pollution and its effects soil and soil pollution

Herbicides causes which type of disorder?

  1. Metabolic

  2. Physiological

  3. Both a and b

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Now-a-days, herbicides are frequently used in the place of pesticides. these are also chemical compounds such as $NaClO _3, Na _3AsO _3$ etc., has become more frequent but they are also toxic to mammals.

Multiple choice chemistry for a pollution free nature properties of soil soil pollution and its effects soil and soil pollution

 Bio-pesticides should be used in place of toxic chemical pesticides because it helps in control of ________.

  1. soil pollution

  2. air pollution

  3. thermal pollution

  4. all of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bio-pesticides should be used in place of toxic chemical pesticides. Organic fertilizers should be used in place of synthesized chemical fertilizers.
Ex: Organic wastes in animal dung may be used to prepare compost manure instead of throwing them wastefully and polluting the soil.