UPSC Essentials | Daily subject-wise quiz : Environment, Geography, Sci-Tech MCQs on Microalgae, Norwesters and more (Week 82)

1. They person debased photosynthesis efficiency.

2. They service arsenic concern earthy materials.

3. They turn precise rapidly.

Which of the statements fixed supra is/are correct?

(a) 1 only

(b) 2 and 3 only

(c) 1, 2 and 3

(d) 3 only

Explanation

— Microalgae are susceptible of increasing rapidly, their high photosynthesis efficiency coupled with the quality to accumulate a ample magnitude of bioproducts wrong their cells marque them a suitable campaigner to serve arsenic concern earthy material. Hence, connection 1 is not close and statements 2 and 3 are correct.

— TCL, 1 of India’s largest chemic businesses, is the archetypal commercialized institution to motion a woody with the CSMCRI to cultivate this taxon of microalgae and extract biodiesel from them. The Chlorella genus comprises 13 taxon of single-celled greenish algae. CSMCRI identified a taxon that tin turn successful some freshwater and marine.

Therefore, enactment (b) is the close answer.

QUESTION 2

Consider the pursuing statements astir Norwesters:

1. They originate during the pre-monsoon season.

2. These are terrible thunderstorms that originate implicit occidental parts of India.

Which of the statements fixed supra is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

Explanation

— Norwesters are convulsive thunderstorms that originate successful Eastern and North Eastern India, confederate Nepal, Bhutan, and Bangladesh. Hence, connection 2 is not correct.

— They signifier during the pre monsoon play (March–May). Hence, connection 1 is correct.

— They similar to migrate northwest to southeast, though they whitethorn sometimes question southwest to northeast.

— Locally, they are known arsenic Kalbaisakhis.

— The Norwesters bring terrible rain, lightning, thunder, hailstorms, particulate storms, squalls, downbursts, and, connected occasion, tornadoes.

Therefore, enactment (a) is the close answer.

(Other Source: mausamjournal.imd.gov.in)

QUESTION 3

With notation to the Indian Flying Fox, see the pursuing statements:

1. The Indian Flying Fox feeds connected the nectar and fruit.

2. The Indian Flying Fox is placed nether the “vermin” class successful the Wild Life (Protection) Act, 1972.

3. They play an important relation successful pollination and effect dissemination.

How galore of the statements fixed supra are correct?

(a) Only one

(b) Only two

(c) All three

(d) None

Explanation

— Indian flying foxes are recovered passim the tropics and, being frugivorous animals, play an important relation successful pollination and effect dissemination. Hence, connection 3 is correct.

— The colonisation of flying foxes is falling. Bat populations are declining successful India due to the fact that of precocious rates of deforestation, accrued pesticide usage, situation degradation, and quality consumption.

— The Indian flying fox, P.giganteus, often roosts successful ample trees.

— The Indian Flying Fox is the region’s largest bat and is known to reside adjacent to humans.

— These bats are noted for devouring nectar and fruit. Hence, connection 1 is correct.

— Indian flying foxes, classified arsenic vermin class successful the Wild Life (Protection) Act, 1972. They origin sizeable harm to effect crops. Hence, connection 2 is correct.

Therefore, enactment (c) is the close answer.

(Other Source: kbb.karnataka.gov.in)

QUESTION 4

With notation to the Naegleria fowleri, see the pursuing statements:

1. It lives successful freshwater.

2. Primary amebic meningoencephalitis (PAM) is simply a uncommon encephalon corruption that is caused by Naegleria fowleri.

3. It infects radical erstwhile it enters the assemblage done the ears.

Which of the statements fixed supra are correct?

(a) 1 and 2 only

(b) 2 only

(c) 2 and 3 only

(d) 1, 2 and 3

Explanation

— A five-year-old miss undergoing attraction for superior amoebic meningoencephalitis (PAM), a uncommon corruption caused by Naegleria fowleri oregon “brain-eating amoeba”, died astatine the Government Medical College Hospital successful Kozhikode.

— Primary amebic meningoencephalitis (PAM) is simply a uncommon encephalon corruption that is caused by Naegleria fowleri. It is simply a free-living amoeba oregon a single-celled surviving organism. Hence, connection 2 is correct.

— Naegleria fowleri lives successful lukewarm fresh h2o and soil each implicit the planet. Hence, connection 1 is correct.

— It infects radical by entering the assemblage done the nose. Hence, connection 3 is not correct.

— Higher temperatures of up to 115°F (46°C) beforehand its growth, and it whitethorn unrecorded for little periods of clip successful hotter conditions.

— The amoeba tin beryllium recovered successful lukewarm freshwater bodies specified arsenic lakes and rivers, swimming pools, splash pads, surf parks, and different recreational facilities that are poorly managed oregon person small chlorination.

— Naegleria fowleri enters the assemblage done the nose, mostly portion radical are swimming. It past travels to the brain, destroying encephalon insubstantial and inducing edoema.

— Notably, humans cannot go infected with Naegleria fowleri by ingesting h2o contaminated with the amoeba. PAM is besides noncommunicable.

Therefore, enactment (a) is the close answer.

QUESTION 5

T Coronae Borealis was successful the news. It is a:

(a) Centaurs

(b) Brown Dwarf

(c) Elliptical Galaxy

(d) Binary Star System

Explanation

— The satellite is astir to spot a uncommon nova explosion, a tremendous summation successful the brightness of a prima triggered by a thermonuclear detonation connected the aboveground of a dwarf star.

— T Coronae Borealis, often known arsenic the Blaze Star oregon T CrB, is simply a binary strategy successful the Northern Crown. This strategy contains the remains of a dormant prima the size of Earth, with a wide comparable to the Sun. The T CrB is simply a achromatic dwarf and a reddish elephantine satellite orbiting each other.

— According to NASA, the T Coronae Borealis lives successful the constellation Coronae Borealis. Because of its periodic explosive nature, scientists connected Earth person been attentively monitoring this prima strategy for galore years. It has been classed arsenic a recurrent nova owed to its repeated outbursts.

— It is simply a binary system, which means the T CrB is made up of 2 stars: a reddish elephantine and a achromatic dwarf. Both of these stars orbit each other, creating perfect conditions for periodic nova outbursts. The T CrB has a thermonuclear detonation connected its aboveground astir each 80 years. It was past observed from Earth successful 1946.

Therefore, enactment (d) is the close answer.

Previous Daily Subject-Wise-Quiz

Daily subject-wise quiz — Polity and Governance (Week 82)

Daily Subject-wise quiz — History, Culture, and Social Issues (Week 82)

Daily subject-wise quiz — Environment, Geography, Science and Technology (Week 81)

Daily subject-wise quiz — Economy (Week 81)

Daily subject-wise quiz – International Relations (Week 81)

Subscribe to our UPSC newsletter and enactment updated with the quality cues from the past week.

Stay updated with the latest UPSC articles by joining our Telegram channel – IndianExpress UPSC Hub, and travel america on Instagram and X.