Q46. With reference to ‘stem cells’, frequently in the news, which of the following statements is/are correct? 1. Stem cells can be derived from mammals only. 2. Stem cells can be used for screening new drugs. 3. Stem cells can be used for medical therapies. Select the correct answer using the codes given below:

With reference to the latest developments in stem cell research, consider the following statements 1. The only source of human stem cells are the embryos at bla

Consider the following statements: 1. Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent. 2. A person’s genome c

Recombination DNA technology (Genetic Engineering) allows genes to be transferred: 1. Across different species of plants 2. From animals to plants 3. From micro

Which of the following statements is/are correct? Viruses can infect 1. Bacteria 2. Fungi 3. Plants Select the correct answer using the code given below.

Consider the following statements: DNA Barcoding can be a tool to: 1. Assess the age of a plant or animal. 2. Distinguish among species that look alike. 3. Iden

‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why? 1. It is used in developing gene-silencing therapies. 2. It can be used i

With reference to Neem tree, consider the following statements: 1. Neem oil can be used as a pesticide to control the proliferation of some species of insects a

With reference to agriculture in India, how can the technique of ‘genome sequencing’, often seen in the news, be used in the immediate future? 1. Genome sequenc

With reference to the recent developments in science, which one of the following statements is not correct?

Which of the following statements is/are correct regarding vegetative propagation of plants? 1. Vegetative propagation produces a clonal population. 2. Vegetati

At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chromosome. How does this knowledge benefit us? 1. It

Which of the following statements is/are correct? Virus can infect 1. Bacteria 2. Fungi 3. Plants Select the correct answer using the code given below:

There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why? 1. They c

Microbial fuel cells are considered a source of sustainable energy. Why? 1. They use living organisms as catalysts to generate electricity from certain substrat

In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation techniques? 1. It is a technique for cleaning up pollution

Which of the following statements are correct regarding the general difference between plant and animal cells? 1. Plant cells have cellulose cell walls whilst a

Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy 2. Viruses can be cultured in any synthetic med

Consider the following statements: 1. According to the Indian Patents Act, a biological process to create a seed can be patented in India. 2. In India, there is

With reference to the current trends in the cultivation of sugarcane in India, consider the following statements: 1. A substantial saving in seed material is ma

The “Red Data Books” published by the International Union for Conservation of Nature and Natural Resource (IUCN) contain lists of 1. Endemic plant and animal sp

Consider the following activities: 1. Spraying pesticides on a crop field 2. Inspecting the craters of active volcanoes 3. Collecting breath samples from spouti

Consider the following statements: 1. Biofilms can form on medical implants within human tissues. 2. Biofilms can form on food and food processing surfaces. 3.

Consider the following statements: 1. Maize can be used for the production of starch. 2. Oil extracted from maize can be a feedstock for biodiesel. 3. Alcoholic

With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the pro

In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be potential sites for ca

Consider the following statements in respect of probiotics: 1. Probiotics are made of both bacteria and yeast. 2. The organisms in probiotics are found in food

Consider the following kinds of organisms: 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of the above kinds of organisms employ biopesticides?

Other than resistance to pests, what are the prospects for which genetically engineered plants have been created? 1. To enable them to withstand drought. 2. To

Organic Light Emitting Diodes (OLEDs) are used to create digital displays in many devices. What are the advantages of OLED displays over Liquid Crystal displays

Consider the following statements: 1. Agricultural soils release nitrogen oxides into the environment. 2. Cattle release ammonia into the environment. 3. Poultr

Consider the following pairs: Terms sometimes seen in the news: Their origin 1. Annex-I Countries: Cartagena Protocol 2. Certified Emissions Reductions: Nagoya

With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements: 1. If pure hydrogen i

When reference to carbon nanotubes, consider the following statements: 1. They can be used as carriers of drugs and antigens in the human body. 2. They can be m

In which of the following are hydrogels used? 1. Controlled drug delivery in patients 2. Mobile air-conditioning systems 3. Preparation of industrial lubricants

Consider the following techniques/phenomena: 1. Budding and grafting in fruit plants 2. Cytoplasmic male sterility 3. Gene silencing Which of the above is/are u

With reference to “Gucchi” sometimes mentioned in the news, consider the following statements: 1. It is a fungus. 2. It grows in some Himalayan forest areas. 3.

Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to 1. Resist drought and increase absorptive area

Consider the following statements: The nation-wide ‘Soil Health Card Scheme’ aims at: 1. Expanding the cultivable area under irrigation. 2. Enabling the banks t

A team of scientists at Brookhaven National Laboratory including those from India created the heaviest anti-matter (anti-helium nucleus). What is/are the implic

‘Wolbachia method’ is sometimes talked about with reference to which one of the following?

Which one of the following statements best describes the role of B cells and T cells in the human body?

In the context of hereditary diseases, consider the following statements: 1. Passing on mitochondrial diseases from parent to child can be prevented b

The term ‘ACE2’ is talked about in the context of:

Consider the following statements: 1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue. 2. Sexual tra

With reference to prepackaged items in India, it is mandatory for the manufacturer to put the following information on the main label, as per the Food

Consider the following minerals: 1. Calcium 2. Iron 3. Sodium Which of the minerals given above is/are required by the human body for the contraction

What is the role of ultraviolet (UV) radiation in the water purification systems? 1. It inactivates/kills the harmful microorganisms in water. 2. It r