Biology

Consider statements: no virus can survive in ocean waters; no virus can infect bacteria; no virus can change cellular transcriptional activity in a host.

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?

Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?

Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?

Consider the following statements : 1. Some :rp.ushrooms have medicinal properties. 2. Some mushrooms have psycho- active properties. 3. Some mushrooms have insecticidal properties. 4. Some mushrooms have biolumi- nescent properties. How many of the above statements are correct?

Consider the following statements : 1. Some microorganisms can grow in environments with temperature above the boiling point of water. 2. Some microorganisms can grow in environments with temperature below the freezing point of water. 3. Some microorganisms can grow in highly acidic environment with a pH below 3. How many of the above statements are correct?

Which one of the following makes a tool with a stick to scrape insects from a hole in a tree or a log of wood?

'Microsatellite DNA' is used in the case of which one of the following?

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. Biofilms can exhibit antibiotic resistance. Which of the statements given above are correct?

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 foods we ingest but they do not naturally occur in our gut. 3. Probiotics help in the digestion of milk sugars. Which of the statements given above is/are correct?

In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements: 1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform. 2. Sputnik. V vaccine is manufactured using vector-based platform. 3. COVAXIN is an inactivated pathogen-based vaccine. Road, Patna, Bihar 800001 | Hyderabad - 1st & 2nd Floor, SM Plaza, RTC X Rd, Indira Park Road, Jawahar Nagar, Hyderabad, Telangana 500020 Which of the statements given above are correct?

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

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

In the context of hereditary diseases, consider the following statements: 1. Passing on mitochondrial diseases from parent to child can be prevented by mitochondrial replacement therapy either before or after in vitro fertilization of egg. 2. A child inherits mitochondrial diseases entirely from mother and not from father. Which of the statements given above is/are correct?

Consider the following: Bacteria, Fungi, Virus. Which of the above can be cultured in artificial/synthetic medium?

Consider the following statements: 1. Adenoviruses have single-stranded DNA genomes whereas retroviruses have double-stranded DNA genomes. 2. Common cold is sometimes caused by an adenovirus whereas AIDS is caused by a retrovirus. Which of the statements given above is/are correct?

Which one of the following is used in preparing a natural mosquito repellent?

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 can be edited before birth at the early embryonic stage. 3. Human induced pluripotent stem cells can be injected into the embryo of a pig. Which of the statements given above is / are correct?

What is the importance of using Pneumococcal Conjugate Vaccines in India? 1. These vaccines are effective against pneumonia as well as meningitis and sepsis. 2. Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced. 3. These vaccines have no side effects and cause no allergic reactions. Select the correct answer using the code given below:

Which of the following statements are correct regarding the general difference between plant and animal cells? 1. Plant cells have cellulose cell walls whilst animal cells do not. 2. Plant cells do not have plasma membrane unlike animal cells which do 3. Mature plant cell has one large vacuole whilst animal cell has many small vacuoles. Select the correct answer using the code given below:

In the context of recent advances in human reproductive technology, “Pronuclear Transfer” is used for

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 no Intellectual Property Appellate Board. 3. Plant varieties are not eligible to be patented in India. Which of the statements given above is/are correct?

The word ‘Denisovan’ is sometimes mentioned in media in reference to

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

‘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 in developing therapies for the treatment of cancer 3. It can be used to developer hormone replacement therapies 4. It can be used to produce crop plants that are resistant to viral pathogens Select the correct answer using the code given below.

Which of the following are the reasons for the occurrence of multi-drug resistance in microbial pathogens in India? 1. Genetic predisposition of some people. 2. Taking incorrect doses of antibiotics to cure diseases 3. Using antibiotics in livestock farming. 4. Multiple chronic diseases in some people Select the correct answer using the code given below.

what is Cas9 protein that is often mentioned in news?

Which one of the following statements is not correct?

With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements : 1. GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests. 2. GM mustard has the genes that allow the plant cross-pollination and hybridization. 3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University. Which of the statements given above is/are correct ?

Consider the following statements: 1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue 2. Sexual transmission of Zika virus disease is possible. Which of the statements given above is/are correct?

1. Viruses can infect 2. bacteria 3. fungi 4. plants

Among the following, which were frequently mentioned in the news for the outbreak of Ebola virus recently?

With reference to the use of nano-technology in health sector, which of the following statements is/are correct?

HINI virus is sometimes mentioned in the news with reference to which one of the following diseases?

With reference to bio-toilets used by the Indian Railways, consider the following statements:

Consider the following pairs: Vitamin Deficiency disease 1. Vitamin C Scurvy 2. Vitamin D Rickets 3. Vitamin E Night blindness Which of the pairs given above is/are correctly matched?

Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of

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 and mites. 2. Neem seeds are used in the manufacture of biofuels and hospital detergents. 3. Neem oil has applications in pharmaceutical industry. Which of the statements given above is/are correct?

Which one of the following is the process involved in photosynthesis?

Which of the following statements is / are correct regarding vegetative propagation of plants? 1. Vegetative propagation produces clonal population. 2. Vegetative propagation helps in eliminating the virus. 3. Vegetative propagation can be practiced most of the year.

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 used to create transgenic crops?

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 beverages can be produced by using maize. Which of the statements given above is/are correct?

Among the following organisms, which one does not belong to the class of other three?

With reference to Bombay Natural History Society (BNHS), consider the following statements: 1. It is an autonomous organization under the Ministry of Environment and Forests. 2. It strives to conserve nature through action-based research, education and public awareness. 3. It organizes and conducts nature trails and camps for the general public. Which of the statements given above is/are correct?

With reference to a conservation organization called Wetlands International’, which of the following statements is/are correct? 1. It is an intergovernmental organization formed by the countries which are signatories to Ramsar Convention. 2. It works at the field level to develop and mobilize knowledge, and use the practical experience to advocate for better policies.

Recombinant DNA technology (Genetic Engineering) allows genes to be transferred 1\. across different species of plants 2\. from animals to plants 3\. from microorganisms to higher organisms Select the correct answer using the codes given below.

Consider the following animals: 1\. Sea cow 2\. Sea horse 3\. Sea lion Which of the above is/are mammal/mammals?

Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by

Which of the following diseases can be transmitted from one person to another through tattooing? 1\. Chikungunya 2\. Hepatitis B 3\. HIV-AIDS Select the correct answer using the codes given below.

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

Fruits stored in a cold chamber exhibit longer storage life because

Many transplanted seedlings do not grow because

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 medium. 3\. Viruses are transmitted from one organism to another by biological vectors only. Select the correct answer using the codes given below.

Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss? 1\. Hard and waxy leaves 2\. Tiny leaves or no leaves 3\. Thorns instead of leaves Select the correct answer using the codes given below.

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? 1 Smelting units 2 Pens pencils 3 Paints 4 Hair oils and cosmetics **select the correct answer using the codes given below:**

Consider the following: 1. Photosynthesis 2. Respiration 3. Decay of organic matter 4. Volcanic action Which of the above add carbon dioxide to the carbon cycle on Earth?

Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?

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 is possible to know the pedigree of livestock. 2. It is possible to understand the causes of all human diseases. 3. It is possible to develop disease-resistant animal breeds. Which of the statements given above is/are correct?

A company marketing food products advertises that its items do not contain trans- fats. What does this campaign signify to the customers? 1. The food products are not made out of hydrogenated oils. 2. The food products are not made out of animal fats/oils. 3. The oils used are not likely to damage the cardiovascular health of the consumers. Which of the statements given above is/are correct?

Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use?

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is

When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because

A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed. The objective of this is