Science Biology MCQ-243

General Science-Biology online Exam NDA, UPPSC, SSC, UPSC, RBI, CDS, JPSC, CivilsPrelims Exams

Consider the following statements:
1. Molasses is a by-product of sugar production process.
2. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories.
3. Sugar can only be produced from sugarcane as the raw material.
Which of these statements are correct?


Consider the following statements:
1. Kyoto protocol came into force in the year 2005.
2. Kyoto protocol deals primarily with the depletion of the ozone layer.
3. Methane as a green house gas is more harmful than carbon dioxide.
Which of the statements given above is/are correct?


Assertion (A): Cellulose is used in making shatter-proof glass.
Reason (R) : Polysaccharides are not soluble in water.


Which one of the following parts of the pitcher plant becomes modified into a pitcher?


Which of the following types of light are strongly absorbed by plants?


Consider the following
1. Rice fields
2. Coalmining
3. Domestic animals
4. Wet 1 ands
Which of the above are sources of methane, a major greenhouse gas?


Which one of the following is an insectivorous plant?


Consider the following statements about probiotic food:
1. Probiotic food contains live bacteria which are considered beneficial to humans.
2. Probiotic food helps in maintaining gut flora. Which of the statements given above is/are correct?


Consider the following statements:
1. Sweet orange plant is propagated by grafting technique.
2. Jasmine plant is propagated by layering technique.
Which of the statements given above is/are correct?


In making the saffron spice, which one of the following parts of the plant is used?


Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/ reasons is this attributable?
1. The anaerobic conditions associated with rice cultivation cause the emission of methane.
2. When nitrogen based fertilizers are used, nitrous oxide is emitted from the cultivated soil.
Which of the statements given above is / are correct ?


Given below are the names of four energy crops. Which one of them can be cultivated for ethanol?


Consider the following pairs :
Protected area– Well-known for
1. Bhiterkanika, Orissa


Some species of plants are insectivorous. Why?


Mon 863 is a variety of maize. It was in the news for the following reason.


Though coffee and tea both are cultivated on hill slopes, there is some difference between them regarding their cultivation. In this context, consider the following statements:
1. Coffee plant requires a hot and humid climate of tropical areas whereas tea can be cultivated in both tropical and subtropical areas.
2. Coffee is propagated by seeds but tea is propagated by stem cuttings only.
Which of the statements given above is /are correct?


Consider the following statements :
1. Biodiversity hotspots are located only in tropical regions.
2. India has four biodiversity hotspots i.e.. Eastern Himalayas, Western Himalayas, Western Ghats and Andaman and Nicobar Islands.
Which of the statements given above is / are correct?


Consider the following statements :
1. The boundaries of a National Park are defined by legislation.
2. A Biosphere Reserve is declared to conserve a few specific species of flora and fauna.
3. In a Wildlife Sanctuary, limited biotic interference is permitted.
Which of the statements given above is / correct ?


A pesticide which is a chlorinated hydrocarbon is sprayed on a food crop. The food chain is :Food crop – Rat – Snake – Hawk. In this food chain, the highest concentration of the pesticide would accumulate in which one of the following?


With reference to soil conservation, consider the following practices:
1. Crop rotation
2. Sand fences
3. Terracing
4. Wind breaks
Which of the above are considered appropriate methods for soil conservation in India,


Other than Jatropha curcas, why is Pongamiapinnata also considered a good option for the production of bio-diesel in India?
1. Pongamia pinnata grows naturally in most of the arid regions of India.
2. The seeds of Pongamia pinnata are rich in lipid content of which nearly half is oleic acid.
Which of the statements given above is/ are correct?


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


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 increase the nutritive value of the produce
3. To enable them to grow and do photosynthesis in spaceships and space stations
4. To increase their shelf life
Select the correct answer using the codes given below :


Which one of the following sets is correctly matched?
(1) Diphtheria, Pneumonia and Leprosy: Hereditary
(2) AIDS, Syphilis and Gonorrhoea: Bacterial
(3) Colour blindness, Haemophilia and Sickle cell anaemia: Sex linked
Polio, Japanese B encephalitis and Plague: Viral


A person with ‘AB’ blood group is sometimes called a universal recipient because of the