Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

The soil pollutants that affect the food chain and food web by killing microorganisms and plants are

  1. Nitrogen oxides

  2. Pathogens

  3. Pesticides

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

Pesticides are the chemical compounds which are used for the elimination of the harmful pests and insects. When the pesticides are used in excess, it results in the degradation of the soil and water quality. These are non-biodegradable compounds which enter the food chain and the concentration increases with the increase in the trophic level. The pesticides accumulation in the tissues causes toxicity in the organisms and leads to death. 

Thus, the correct answer is option C. 

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which of the following is dissolved in water to make a Bordeaux mixture?

  1. Calcium chloride

  2. Copper sulphate

  3. Sodium chloride

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

Bordeaux mixture is a combination of copper sulphate and hydrated lime. It is used mainly to control garden, vineyard and farm infestations of fungus.

Thus, the correct answer is option B.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Shell of egg in bird becomes thin (not properly formed) due to the pollution of pesticides. This is due to interference in the activity of

  1. Ca ATPase

  2. Mg ATPase

  3. Calmodulin

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to chronic injection of pesticides like DDT in birds resulted in thinner and weaker shell. The Ca-ATPase pump responsible for transporting Ca which is inhibited by the pesticide and results in less Ca in the shell. Thus , the correct answer is option A. 

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which of the following statement is an impact of biomagnification?
A) Salmon exposed to a sub-lethal dose of the DDT increases the sensitivity to cold.
B) Dialdrin decreases the growth rate of female white-tailed deer.
C) The contamination caused at the primary level is less than the secondary level.

  1. Both A and B

  2. Both A and C

  3. Only A

  4. A, B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biomagnification is the process where the concentration of toxins increases as they move up the food chain. All listed examples (DDT effects on salmon, Dialdrin effects on deer, and the concentration gradient between trophic levels) are recognized impacts or characteristics of this phenomenon.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

The process of accumulation of pesticides in a biological system is known as 

  1. Bioaccumulation

  2. Bioconcentration

  3. Bioremediation

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

The accumulation of chemicals in the living cells is known as bioaccumulation. When there is excessive use of the pesticides for the protection of fruits and vegetables against the harmful pests, this may lead to its accumulation in the food products. When these products are consumed, the chemicals deposit in the fatty tissues of the host. This phenomenon is called bioaccumulation of the chemicals in the living system.

Thus, the correct answer is option A.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Development of resistant strains of target pest is a

  1. Positive effect of bimagnification

  2. Negative impact of pesticides

  3. Negative impact of population

  4. Positive effect of using biosensor
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The development of resistant pest strains is a significant drawback of pesticide use, as it renders the chemicals less effective and necessitates higher doses or new chemicals. This is classified as a negative impact of pesticide application.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Integrated pest management aims at 

  1. Controlling the number of pest

  2. Decreasing the development of pests resistance

  3. Increasing the pest resistance capability

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Integrated Pest Management (IPM) is a strategy that combines various methods to keep pest populations below economic injury levels while minimizing environmental impact. This includes controlling pest numbers and managing the development of resistance.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

.........., a related phenomenon, occurs when the genetic mutation that made the pest resistant to one pesticide also makes it resistant to others

  1. Multiple resistance

  2. Cross-resistance

  3. Mutation

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
In multiple resistance the pests are resistant to more than one class of pesticide. This can happen when pesticides are used in sequence, with a new class replacing one to which pests display resistance with another.
Cross resistance occurs when the genetic mutation that made the pest resistant to one pesticide also makes it resistant to others, often those with a similar mechanism of action.
Mutation is the changing of the structure of a gene, resulting in a variant form which may be transmitted to subsequent generations.
So, the correct answer is option B.
Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which of the following is involved in inhibition of growth of plants which is produced due to human activities?

  1. Auxins

  2. Phytotoxin

  3. Mycotoxins

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

Auxin is a plant hormone which causes the elongation of cells in shoots and is involved in regulating plant growth.
Phytotoxins refers to substances that are inhibitory to the growth of or poisonous to plants. Phytotoxic substances may result from human activity, as with herbicides, or they may be produced by plants, by microorganisms, or by naturally occurring chemical reactions.
Mycotoxins are toxic chemical products produced by fungi that readily colonize crops.
Antitoxins are antibodies that counteracts a toxin.
So, the correct answer is option B.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which of the following has the potential of thyroid disruption properties in rodents?

  1. Atrazine

  2. Carbamate

  3. Triazole

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Both carbamates and triazoles have been studied for their potential to interfere with thyroid hormone regulation in rodent models. Therefore, both are considered to have thyroid-disrupting properties.