InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
$ Circinate ptyxis is found in Angiosperms. ! The male reproductive organs of Angiosperms are called antheridia.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - D | |
| 352. |
$ Hypnospores are the thick walled resting spores produced in some Algae. ! The megaspores of Pinus are also called hypnospores.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 353. |
Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true forA. Radiation pollutantsB. UV radiation pollutantsC. Particle pollutantsD. All radioactive pollutants |
| Answer» Correct Answer - D | |
| 354. |
Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specifice statement is ture forA. `gamma`- raduation pollutantsB. U.V. radiation pollutantsC. `beta`- particle pollutantsD. All radioactive pollutants |
| Answer» Correct Answer - D | |
| 355. |
$ Modern wheat is hexaploid. ! Polyploidy leads to the formation of new varieties.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 356. |
The term taxonomy was coined byA. LinnaeuseB. De CandolleC. LamarckD. Aristotle |
| Answer» Correct Answer - B | |
| 357. |
$ Appearance of pubic hair in human beings indicates the onset of puberty. ! Pubis is a bone of the pelvic girdle of human beings.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - B | |
| 358. |
$ The endocrine part of human pancreas is represented by `alpha` a and `beta` cells. ! Endocrine gland have ducts.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 359. |
$ The patients of cholera, vomitting and dysentary are given intravenous drip of saline solution. ! The saline solution kills the disease causing micro-organisms, after vomitting and dysentary.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 360. |
Assertion (A) : Presently, the global atmosphere is warming up. Reason (R): The depletion of stratospheric ozone layer has resulted in increase in ultraviolet radiations reaching the Earth.A. Both (A) and (R) are true and (R) is the correct explanation of (A)B. Both (A) and (R) are true but (R) is not the correct explanation of (A)C. (A) is true statement but (R) is falseD. Both (A) and (R) are false |
| Answer» Correct Answer - B | |
| 361. |
The depletion of ozone layer is due to:A. oxide of NB. oxide of SC. oxide of CD. none of these |
| Answer» Correct Answer - A | |
| 362. |
Ozone depletion in stratosphere shall result in:A. forest firesB. global warmingC. increased incidence of skin cancerD. none of the above |
| Answer» Correct Answer - C | |
| 363. |
Maximum ozone depletion is caused byA. `CO_2`B. CFCC. `SO_2`D. `CH_4` |
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Answer» Correct Answer - B Maximum ozone depletion is caused by CFC (Chioro fluoro carbons). |
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| 364. |
An internationl treaty, recognising the the deleterious effects of ozone depletion is known as:A. Earth SummitB. Kyoto ProtocolC. Rio ConferenceD. Montreal protocol |
| Answer» Correct Answer - D | |
| 365. |
Maximum ozone depletion is caused byA. `CO_(2)`B. `SO_(2)`C. CFCD. `CH_(4)` |
| Answer» Correct Answer - C | |
| 366. |
Montreal protocol aims at:A. Control of `CO_(2)` emissionB. Reduction in ozone depleting substancesC. Biodiversity conservationD. Control of water pollution |
| Answer» Correct Answer - B | |
| 367. |
Assertion: Biomagnification of DDT can enhance the decline in bird population. Reason: DDT causes thinning of egg shell and their premature breaking by disturbing calcium metabolism.A. If both Assertion and Reason are true and the reason is the correct explanation of the assertion, then mark (1).B. If both Assertion and Reason are true but the reason is not the correct explanation of the assertion, then mark (2).C. If Assertion is true but Reason is false, then mark (3).D. If both Assertion and Reason are false, then mark (4). |
| Answer» Correct Answer - A | |
| 368. |
Biomagnification of DDT causes decline in bird population by:A. Bringing disturbance in calcium metabolismB. Thinning of egg shellC. Premature breaking of eggsD. All the above |
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Answer» Correct Answer - D Biomagnification of DDT causes decline in bird population. by bringing disturbance in calcium metabolism, thinning of egg shell and premature breaking of eggs. |
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| 369. |
How has DDT caused decline in bird population ? |
| Answer» High concentrations of DDT disturb calcium metabolism in birds , whish causes thinning of egg shell and their premature breaking, eventually causing decline in bird populations. | |
| 370. |
Biomagnification of DDT causes decline in bird population by:A. Bringing disturbance in calcium methabolismB. Thining of egg shellC. Premature breaking of eggsD. All the above |
| Answer» Correct Answer - D | |
| 371. |
$ Wing of a bat is said to be homologous to the wing of bird and analogous to the wing of an insect. ! Homologous organs are similar inhiction but analogous organs are similar in origin.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 372. |
Tendrils and twiners come in contact with their support by means ofA. NutationB. ThigmonastyC. ThigmotropismD. Anemotropism |
| Answer» Correct Answer - A | |
| 373. |
$ Weak stems which can climb a support without any climbing organs are called Twiners. ! Some Twiners have clinging roots.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - C | |
| 374. |
Ecofriendly method isA. Plantation of `C_3` plantsB. Plantation of sugarcaneC. Energy plantationD. None of the above |
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Answer» Correct Answer - C Ecofriendly method is energy plantation. |
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| 375. |
A person has impaired nervous system and signs of madness due to continued intake of metal contaminated water. The metal isA. MercuryB. CalciumC. ManganeseD. Lead |
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Answer» Correct Answer - D A person has impaired nervous system and signs of madness due to continued intake of metal contaminated water. The metal is lead. |
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| 376. |
Hospital wastes areA. Hazardous and disposed by incineratorB. Non-hazardous and disposed by incineratorC. Hazardous and disposed into waterD. Non-hazardous and disposed into water |
| Answer» Correct Answer - A | |
| 377. |
If a water body is contaminated with toxicant , its biomagnification will be more marked inA. PlanktonB. Small fishC. BirdsD. Water |
| Answer» Correct Answer - C | |
| 378. |
Which one of the following pairs of gases are the major cause of "Greenhouse effect" ?A. `CO_(2) and CO`B. `CFCs and SO_(2)`C. `CO_(2) and N_(2)O`D. `CO_(2) and O_(3)` |
| Answer» Correct Answer - C | |
| 379. |
Which one of the following pairs of gases are the major cause of "Greenhouse effect" ?A. `CO_(2) and N_(2)O`B. `CO_(2) and O_(3)`C. `CO_(2)` and COD. CFCs and `SO_(2)` |
| Answer» Correct Answer - A | |
| 380. |
Which of the following statements regarding the greenhouse effect are correct. I. Global warming will result in an increases in the number of tropical storms. II. Addition of greenhouse gases to the atmosphere results in increased heat energy in the atmosphere. III. Global warming will result in rising sea levels. IV. Full recovery from the enhanced greenhouse effect will require many centuries.A. I, III and IVB. I and IIC. III and ID. IV and I |
| Answer» Correct Answer - A | |
| 381. |
What are floes? State their role in effluent treatment and their ultimate fate in sewage treatment tank. |
| Answer» Flocs are the masses of bacteria associated with fungal filaments to form mesh-like structure. | |
| 382. |
Greenhouse effect is the comulative result of the influences of certain gases. Identify the gas which is not involved in this influence:A. MethaneB. Carbon dioxideC. ChloroflurocarbonsD. Nitrogen |
| Answer» Correct Answer - D | |
| 383. |
Effluent from secondary treatment contains…… which are killed by….. |
| Answer» Correct Answer - Mircroorganisms, Chlorination; | |
| 384. |
Which is correct matched ? 1. Arsenic poisoning -Black foot disease. 2. Secondary Effluent treatment-Biological process. 3. Pyrolysis -Solid soil waste disposal. 4. Tubifex -Water pollution indicator. 5. Biomagnification -Degradable pollutants.A. 1,2,3,5B. 1,3,4,5C. 2,3,4,5D. 1,2,3,4 |
| Answer» Correct Answer - D | |
| 385. |
$ The two strands of a chromosome are called sister chromatids ! The two sister chromatids get separated during Anaphase.A. If both As and R are correct and R is correct explanation of AsB. If both As and R are correct but R is not correct explanation of AsC. If As is correct, R is wrongD. If both As and R are wrong. |
| Answer» Correct Answer - A | |
| 386. |
Water logging and soil salinity are of the problems that have come in the wake of the Green Revolution. Discuss their causes and adverse effects to the environment. |
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Answer» Water logging and soil salinity is caused by extensive irrigation without proper drainage of water. Continuous presence of water draws salt to the surface of the soil, which gets deposited as a thin crust on the land surface or collecting at the roots of the plants. Adverse effects (i) Increased salt content stunts the growth of crop plants. Root cells saturated with saline water gets damaged. (iii) Plants die. (iv) Crop yield gets affected. (v) Financial loss to the farmers. |
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| 387. |
Domestic waste mostly constitute:A. Nonbiodegradable pollutionB. Biodegradable pollutionC. EffluentsD. Air pollution |
| Answer» Correct Answer - B | |
| 388. |
Domestic waste mostly constitute:A. non-biodegradable pollutionB. biodegradable pollutionC. effluentsD. air pollution |
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Answer» Correct Answer - B Domestic waste constitutes biodegradable pollutants, such pollutants are naturally present organic compounds which can be broken down by microorganisms and can be recycled, e.g., sewage. |
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| 389. |
The collecting ducts in the kidney converge to formA. PyramidB. CalyxC. PelvisD. Column of Bertin |
| Answer» Correct Answer - A | |
| 390. |
Read and select the incorrect option about desertification.A. A desert is created when barren patches of land meet.B. Desertification is the result of increased urbanisation.C. Deserts are arid patches of land.D. Slash and burn method is one of the major cause of desertification. |
| Answer» Correct Answer - D | |
| 391. |
Increasing skin cancer and high mutation rate are the result ofA. Acid rainB. Ozone depletionC. CO pollutionD. `CO_2` pollution |
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Answer» Correct Answer - B Increasing skin cancer and high mutation rate are due to ozone depletion. |
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| 392. |
Increasing skin cancer and high mutation rate are the result ofA. Acir rainB. Ozone depletionC. CO pollutionD. `CO_(2)` pollution |
| Answer» Correct Answer - B | |
| 393. |
Montreal Protocol is associated withA. control of emission of ozone depleting substancesB. control of radioactive wastesC. control of desertificationD. protection and management of forsets. |
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Answer» Correct Answer - A Recognising the deleterious affects of ozone depletion, an international treaty, known as the Montreal Protocol, was signed at Montreal (Canada) in 1987 (effective in 1989) to control the emission of ozone depleting substances. |
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| 394. |
Select the correct arrangement of the types of ultraviolet radiations according to the intensity of their effect on human skinA. `UV-A gt UV-B gt UV-C`B. `UV-B gt UV-C gt UV-A`C. `UV-C gt UV-B gt UV-A`D. `UV-A gt UV-C gt UV-B` |
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Answer» Correct Answer - B Ultraviolet radiations are of three types -UV-C (100-280 nm), UV-B (280-320 nm) and UV-A (320-390 nm). Shorter ultraviolet radiations (UV-C) ar absorbed by the atmosphere. The longer ones are not much hjarmful. The intermediate or UV-B are harmful as well as capable of deep penetration. Thinning of ozone layer increases the amount of UV-B radiations reaching the earth. UV-B radiations damage skin cells cause ageing of skin and skin cancer. |
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| 395. |
Increasing skin cancer and high mutation rate are the result ofA. ozone depletionB. acid rainC. CO pollutionD. `CO_(2)` pollution. |
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Answer» Correct Answer - A Ozone depletion occur widely in the stratosphere due to increased amount of CFCs which causes various types of skin cancer and mutations. |
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| 396. |
Which of the following can cause DNA damage and mutations in humans ?A. Absorption of UV-A and UV-BB. Absorption of UV-BC. Absorption of UV-AD. Absorption of UV-A and UV-C |
| Answer» Correct Answer - B | |
| 397. |
Agricultural use of DDT was banned in India duringA. 1962B. 1972C. 1974D. 1989 |
| Answer» Correct Answer - D | |
| 398. |
Which of the following is a cytokinin ?A. PhytochromeB. LeucineC. EthyleneD. Zeatin |
| Answer» Correct Answer - D | |
| 399. |
Phytochrome was isolated byA. Butter et alB. W.WentC. R.HillD. Borthwick et al |
| Answer» Correct Answer - A | |
| 400. |
Movements caused by internal factors areA. ParatonicB. IntrinisicC. RheotropismD. Autonomic |
| Answer» Correct Answer - D | |