Q. Which one among the following hormones stimulates the plant cells to grow in a manner such that the plant appears to be bent towards light?
1) Cytokinin
2) Auxin
3) Gibberellin
4) Abscisic Acid
Q. The main thinking part of the brain is
1) Midbrain
2) Hypothalamus
3) Forebrain
4) Hindbrain
Q. The pH of fresh milk is 6. When it turns sour, the pH
1) becomes < 6
2) remains the same, i.e., 6
3) becomes > 6
4) becomes neutral i.e., 7
Q. Consider the following statements regarding osmosis in animal cells:
1. If the water potential of the solution surrounding the cell is too high, the cell shrinks.
2. If the water potential of the solution surrounding the cell is too low, the cell swells and bursts.
3. It is important to maintain a constant water potential inside the animal body.
4. In animal cells, water potential far exceeds the solute potential.
Which of the statements given above is/are correct?
1) 1 and 2
2) 3 only
3) 4
4) 2 and 3
Q. Consider the following statements in relation to plant tissue 'chlorenchyma':
1. It is formed by the palisade and spongy mesophyll.
2. It is a form of parenchyma which contains chloroplasts.
3. It serves to transport organic solutes made by photosynthesis.
4. It is a thin transparent layer which has chiefly a protective function.
Which of the statements given above is/are correct?
1) 1 and 2 only
2) 1, 2 and 3
3) 2 and 4
4) 1 only
Q. Consider the following disease:
1. Cholera
2. Tuberculosis
3. Filaria
4. Typhoid
Which of the above disease are caused by the bacteria?
1) 1 and 3 only
2) 2 and 4 only
3) 1, 3 and 4
4) 1, 2 and 4
Q. The enzyme that converts glucose to ethyl alcohol is -
1) Invertase
2) Maltase
3) Zymase
4) Diastase
Q. The compounds leading to origin of life were -
1) Urea and nucleic acids
2) Amino acids and urea
3) Proteins and nucleic acids
4) Protein and amino acids
Q. Vitamin K is necessary for -
1) Prevention of rickets
2) Prevention of pernicious anaemia
3) Formation of Prothrombin
4) Formation of DNA
Q. Aldo sterone regulates -
1) Blood Gulcose
2) Serum Calcium
3) Urine Concentration
4) Sodium Absorption
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