Consider the following statements. 1. Microplastics are small pieces of plastic, less than 50 mm in length, that occur in the environment as a consequence of plastic pollution. 2. Microplastics are present in cosmetics, synthetic clothing, plastic bags and bottles. 3. Normal Plastic and Microplastics both are biodegradable. Which of the above statements is/are correct?

Consider the following statements. 1. Microplastics are small pieces of plastic, less than 50 mm in length, that occur in the environment as a consequence of plastic pollution. 2. Microplastics are present in cosmetics, synthetic clothing, plastic bags and bottles. 3. Normal Plastic and Microplastics both are biodegradable. Which of the above statements is/are correct? Correct Answer 2 only

The correct answer is 2 only

Key Points

  • Microplastics, small pieces of plastic, less than 5 mm (0.2 inch) in length, that occur in the environment as a consequence of plastic pollution. Hence, statement 1 is incorrect.
  • Microplastics are present in a variety of products, from cosmetics to synthetic clothing to plastic bags and bottles. Many of these products readily enter the environment in wastes. Hence, statement 2 is correct.
  • Normal plastic is biodegradable while, Microplastics are not biodegradable. Thus, once in the environment, primary and secondary microplastics accumulate and persist. Hence, statement 3 is incorrect.

Additional Information

  • Microplastics are either manufactured, for instance, microbeads that are used in cosmetics and beauty products, or they are formed when larger pieces of plastic break down.
  • The small, shiny particles advertised as “cooling crystals” in certain toothpaste qualify as microplastics if the ingredients of the toothpaste mention “polyethylene”.
  • Even so, manufactured microbeads are not a major contributor to microplastic pollution.
  • One of the main contributors to this pollution, instead, is plastic waste, 90% of which is not recycled.
  • Plastic bottles, bags, fishing nets, and food packaging are some examples of the larger pieces that break down into microplastics, eventually finding their way into the soil, water, and the air we breathe.

Related Questions

Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. Many farmers use synthetic pesticides to kill infesting insects. The consumption of pesticides in some of the developed countries is touching 3000 grams/hectare. Unfortunately, there are reports that these compounds possess inherent toxicities that endanger the health of the farm operators, consumers and the environment. Synthetic pesticides are generally persistent in environment. Entering in food chain they destroy the microbial diversity and cause ecological imbalance. Their indiscriminate use has resulted in development of resistance among insects to insecticides, upsetting of balance in nature and resources of treated populations. Natural pest control using the botanical pesticides is safer to the user and the environment because they break down into harmless compounds within hours or days in the presence of sunlight. Plants with pesticidal properties have been in nature for millions of years without any ill or adverse effects on the ecosystem. They are easily decomposed by many microbes common in most soils. They help in the maintenance of biological diversity of predators and human health hazards. Botanical pesticides formulated from plants are biodegradable and their use in crop protection is a practical sustainable alternative. On the basis of the above passage, the following assumptions have been made: 1. Synthetic pesticides should never be used in modern agriculture. 2. One of the aims of sustainable agriculture is to ensure minimal ecological imbalance. 3. Botanical pesticides are more effective as compared to synthetic pesticides. Which of the assumptions given above is/are correct?
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. Many farmers use synthetic pesticides to kill infesting insects. The consumption of pesticides in some of the developed countries is touching 3000 grams/hectare. Unfortunately, there are reports that these compounds possess inherent toxicities that endanger the health of the farm operators, consumers and the environment. Synthetic pesticides are generally persistent in environment. Entering in food chain they destroy the microbial diversity and cause ecological imbalance. Their indiscriminate use has resulted in development of resistance among insects to insecticides, upsetting of balance in nature and resources of treated populations. Natural pest control using the botanical pesticides is safer to the user and the environment because they break down into harmless compounds within hours or days in the presence of sunlight. Plants with pesticidal properties have been in nature for millions of years without any ill or adverse effects on the ecosystem. They are easily decomposed by many microbes common in most soils. They help in the maintenance of biological diversity of predators and human health hazards. Botanical pesticides formulated from plants are biodegradable and their use in crop protection is a practical sustainable alternative. Which of the following statements is/are correct regarding biopesticides? 1. They are not hazardous to human health. 2. They are persistent in environment. 3. They are essential to maintain the biodiversity of any ecosystem. Select the correct answer using the code given below.