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Practice Science/EVS Bilingual Quiz Here: Attempt Now

Practice Science/EVS Bilingual Quiz Here: Attempt Now_30.1

Science is an important section for CTET, UPTET, REET, KVS,  and other STET and teaching exams as well.  Science is one of the most difficult sections of the CTET paper II , and it is quite difficult to get good marks in this subject. 30 questions will be asked in the Science section. All of these questions will be Multiple Choice, covering the syllabus from Std. VI to VIII.

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The science section divides its questions into two parts:

  • Science Content ( Biology, Physics, Chemistry) which consist of 15 marks.
  • Science Pedagogical issues, which consist of 15 marks.

At least 4-5 questions are asked from the Biology section in the CTET Science section. Here we are providing important question related to Biology.

How To Score 25+ in Science For CTET Exam

Q1. Upper part of sea/aquatic ecosystem contains
समुद्र / जलीय पारिस्थितिकी तंत्र के ऊपरी भाग में होता है:
(a) Plankton/ प्लवक
(b) Nekton/ नेक्टन
(c) Plankton and Nekton/ प्लवक और नेक्टन
(d) Benthos/ बेंथोस

Q2. In an ecosystem, which one shows one-passage?
एक पारिस्थितिकी तंत्र में, इनमे से क्या एक मार्ग दिखाता है?
(a) Free energy/ मुक्त ऊर्जा
(b) Carbon/ कार्बन
(c) Nitrogen/ नाइट्रोजन
(d) Potassium/ पोटैशियम

Q3. Gas released during Bhopal tragedy was
भोपाल त्रासदी के दौरान निकलने वाली गैस थी:
(a) Ethyl isocyanate / एथिल आइसोसाइनेट
(b) Potassium isothiocyanate/ पोटेशियम आइसोथियोसाइनेट
(c) Sodium isothiocyanate/ सोडियम आइसोथियोसाइनेट
(d) Methyl isothiocyante/ मिथाइल आइसोथियोसाइनेट

Q4. Homeostasis is
होमियोस्टैसिस है
(a) Tendency of biological systems to change with change in environment/ पर्यावरण में परिवर्तन के साथ जैविक प्रणालियों की प्रवृत्ति बदलना
(b) Tendency of biological systems to resist change/ परिवर्तन का विरोध करने वाली जैविक प्रणालियों की प्रवृत्ति
(c) Disturbance of self-regulatory system and natural controls/ आत्म-नियामक प्रणाली और प्राकृतिक नियंत्रण में बाधा
(d) Biotic materials used in homeopathic medicines/ होम्योपैथिक दवाओं में इस्तेमाल होने वाली जैविक सामग्री

Q5. Food chain in which microorganisms breakdown the food formed by primary producers is
खाद्य श्रृंखला जिसमें सूक्ष्मजीव प्राथमिक उत्पादकों द्वारा निर्मित भोजन को विघटित करते हैं, वह है
(a) Parasitic food chain/ परजीवी खाद्य श्रृंखला
(b) Detritus food chain/ डेट्राइटस खाद्य श्रृंखला
(c) Consumer food chain/ भक्षक खाद्य श्रृंखला
(d) Predator food chain/ परभक्षी खाद्य श्रृंखला

Q6. Fertility of soil is measured by its ability to
मिट्टी की उर्वरता को इसकी कौन-सी क्षमता से मापा जाता है?
(a) Retain nutrients/ पोषक तत्वों को बनाए रखने की क्षमता
(b) Hold organic materials/ कार्बनिक पदार्थों को धारण करने की क्षमता
(c) Hold water/ पानी को रोककर रखने की क्षमता
(d) Support life/ जीवनकाल को प्रोत्साहन देने की क्षमता

Q7. River water deposits
नदी का पानी जमा करता है:
(a) Loamy soil/ बलुई मिट्टी
(b) Alluvial soil/ जलोढ़ मिट्टी
(c) Laterite soil/ लैटेराइट मिट्टी
(d) Sandy soil/ रेतीली मिट्टी

Q8. A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is called
औद्योगिक कचरे,जिसमें पारा यौगिक होते हैं, इससे दूषित मछली खाने से होने वाली बीमारी है:
(a) Osteosclerosis/ ओस्टोस्क्लेरोसिस
(b) Hashimoto’s oxidase/ हाशिमोटो’स ओक्सिडेस
(c) Bright’s disease/ ब्राइट रोग
(d) Minimata disease/ मिनामाटा रोग

Q9. Which of the following is the main factor of desertification?
निम्नलिखित में से कौन मरुस्थलीकरण का मुख्य कारक है?
(a) Over-grazing/ अत्यधिक चराई
(b) Tourism/ पर्यटन
(c) Irrigated agriculture/ सिंचित कृषि
(d) All of these/ उपरोक्त सभी

Q10. Plants such as Prosopis, Acacia and Capparis represent examples of tropical
प्रोसोपिस, बबूल और कपारिस जैसे पौधे उदाहरण हैं उष्णकटिबंधीय
(a) Deciduous forests/ पर्णपाती वन
(b) Evergreen forests/ सदाबहार वन
(c) Grass lands/ चारागाह
(d) Thorn forests/ कांटे वाले वन


S1.Ans. (a)
Sol. Planktons are passively floating in upper water, nektons are actively swimming while benthos lead sedentary life upon the sea bottom. Planktons are producers and are present in large number.

S2.Ans. (a)
Sol. The behavior of energy in ecosystem can be termed energy flow due to unidirectional flow of energy, Flow of energy is only in one direction i.e., from solar radiation —> producers —> herbivorous —> carnivores. This energy cannot pass in the reverse direction.

S3.Ans. (d)
Sol. In Bhopal, the killer gas methyl isocyanate (MIC) was leaked into air from a chemical plant killing more than 2,000 people; many of the people are still suffering from various diseases and defects of eye.

S4.Ans. (b)
Sol. The ability to maintain a steady state within constantly changing environment is essential for the survival of living systems. The maintenance of a constant internal environment is called homeostasis.

S5.Ans. (b)
Sol. The dead organic matter of plant or animal is called as detritus. Many animals such as protozoan’s, nematodes, insects etc. depend on detritus and hence they are called as detrivores.

S6.Ans. (d)
Sol. Soil fertility is the characteristic of soil that supports abundant plant life. In particular the term is used to describe agricultural and garden soil.

S7.Ans. (b)
Sol. River water deposit alluvial soil. Alluvial soils are transported by water.

S8.Ans. (d)
Ans. Mercury gets changed to water soluble dim ethyl mercury which undergoes bio magnifications. Eating poisoned animals causes deformity known as minamata disease which is characterized by diarrhea, hemolysis, impairment of various senses, numbness of lips, tongue, limbs, deafness, blurring of vision, mental derangement, meningitis and death.

S9.Ans. (a)
Sol. Desertification means a process of spread of desert that occurs due to degradation of environment; cutting of trees, soil erosion etc. It can be natural or man-made. The main causes for desertification are over cultivation of poor soils, over grazing by animals, excessive cutting of fuel wood and inappropriate irrigation practices resulting in salinization. Among them overgrazing is the most important factor as it causes maximum effect.

S10.Ans. (d)
Sol. Tropical shrubs or thorn forests are found in places where moisture conditions are intermediate between desert and savanna on one hand and seasonal or rain forests on the other hand.

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