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2021 21 questions

Q582021 · 14 Nov 2021
Shoots of plant show upward movement and it can be designated to be
1. A.Negatively phototropic
2. B.Positively chemotropic
3. C.Positively hydrotropic
4. D.Negatively geotropic
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Answer: D
Q592021 · 14 Nov 2021
Which one of the following statements about the process of photosynthesis is correct?
1. A.Chemical energy is converted into light energy.
2. B.Carbon dioxide is oxidized to form carbohydrate.
3. C.Water molecule splits into hydrogen and oxygen.
4. D.Light energy is directly used to split water.
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Answer: C
Q602021 · 14 Nov 2021
How are evergreen plants with woody stems having naked seed classified ?
1. A.Angiosperms
2. B.Monocotyledons
3. C.Pteridophytes
4. D.Gymnosperms
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Answer: D
Q622021 · 14 Nov 2021
Girth of stem of a plant increases due to division of cells in
1. A.apical meristem only.
2. B.lateral meristem only.
3. C.apical and intercalary meristem.
4. D.both apical and lateral meristem.
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Answer: B
Q632021 · 14 Nov 2021
Different varieties of the same gene are called
1. A.Genotypes
2. B.Sib pairs
3. C.Alleles
4. D.Isomers
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Answer: C
Q642021 · 14 Nov 2021
Which one of the following viruses used to be responsible for highly infectious disease Smallpox ?
1. A.Adenovirus
2. B.Variola virus
3. C.Aichi virus
4. D.Coxsackie virus
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Answer: B
Q782021 · 14 Nov 2021
The device used to produce electric current is known as
1. A.motor
2. B.generator
3. C.ammeter
4. D.galvanometer
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Answer: B
Q822021 · 14 Nov 2021
Cornea in human eye
1. A.is a light sensitive screen.
2. B.is a muscular diaphragm.
3. C.contains blood vessels.
4. D.is composed of proteins and cells.
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Answer: D
Q842021 · 14 Nov 2021
What is the total number of chambers in the stomach of domestic animals like cattle, buffalo, goat and sheep ?
1. A.Four
2. B.Two
3. C.One
4. D.Three
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Answer: A
Q852021 · 14 Nov 2021
Intestinal bacteria are main source of which one of the following vitamins ?
1. A.Vitamin E
2. B.Vitamin C
3. C.Vitamin $B_{12}$
4. D.Vitamin A
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Answer: C
Q862021 · 14 Nov 2021
Which one of the following hormones is responsible for the development of female sexual characters ?
1. A.Prolactin
2. B.Estrogen
3. C.Oxytocin
4. D.Progesterone
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Answer: B
Q882021 · 14 Nov 2021
Nuclear energy is generated by
1. A.nuclear fission and its expression was proposed by Einstein.
2. B.nuclear fission and its expression was proposed by Rutherford.
3. C.nuclear fusion and its expression was proposed by Bohr.
4. D.nuclear fusion and its expression was proposed by Heisenberg.
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Answer: A
Q512021 · 18 Apr 2021
If human blood is placed in a 2% detergent solution, what will happen to the RBC?
1. A.The RBC will shrink.
2. B.The RBC will swell and become turgid.
3. C.The RBC will swell and burst.
4. D.The RBC will lyse.
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Answer: D
Q522021 · 18 Apr 2021
The major source of vitamins and minerals for vegetarians is
1. A.black gram and wheat.
2. B.rice and mustard.
3. C.vegetables and fruits.
4. D.Soyabean and milk.
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Answer: C
Q742021 · 18 Apr 2021
Which one of the following statements about the cleansing action of soap is not true?
1. A.The oil and dirt gets collected in the centre of the micelle
2. B.Soap micelles scatter light
3. C.Soaps are ammonium salts of long chain carboxylic acids
4. D.Soap forms insoluble precipitates with the calcium and magnesium ions in hard water
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Answer: C
Q912021 · 18 Apr 2021
Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
1. A.Ribosomes
2. B.Mitochondria
3. C.Lysosomes
4. D.Endoplasmic reticulum
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Answer: D
Q922021 · 18 Apr 2021
In mitochondria, ATP synthesizing chemical reaction take place in the
1. A.Outer membrane
2. B.Matrix
3. C.Inner membrane
4. D.DNA of mitochondria
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Answer: C
Q932021 · 18 Apr 2021
Squamous epithelial cells are found in the inner lining of
1. A.Oesophagus
2. B.Small intestine
3. C.Ducts of salivary gland
4. D.Kidney
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Answer: A
Q942021 · 18 Apr 2021
Transformation of meristematic cells into specific permanent tissues occurs by the process of
1. A.Cell differentiation
2. B.Cell division
3. C.Cell multiplication
4. D.Cell regeneration
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Answer: A
Q952021 · 18 Apr 2021
The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
1. A.Respiration and Nitric oxide
2. B.Transpiration and Water vapour
3. C.Photosynthesis and Oxygen
4. D.Germination and carbon dioxide
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Answer: C
Q962021 · 18 Apr 2021
In a dicot pot herb, vaseline/vegetable oil was applied on the upper surface of one leaf (Experimental leaf 1) and on the lower surface of another leaf (Experimental leaf 2). Vaseline/Vegetable oil was not applied to the control leaf. The plant was deliberately not watered for several days. Which leaf will dry up last?
1. A.Experimental leaf 1
2. B.Experimental leaf 2
3. C.Control leaf
4. D.All the leaves will dry up simultaneously
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Answer: B