Biology General Knowledge Questions and Answers – Set 4

Q1. Tonoplast is :
A. A feature of all cells.
B. Found in prokaryotic cells only.
C. Found in plant cells only.
D. Found in animal cells only

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Q2. The cell wall of both bacteria and cyanobacteria contains:
A. Lipid
B. Pectin
C. Protein
D. Muramic acid

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Q3. The stage of meiosis in which pairing of homologous chromosomes starts, is
called:
A. Leptotene
B. Zygotene
C. Diplotene
D. Pachytene –

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Q4. A duplicated chromosome has how many chromatids ?
A. One
B. Two
C. Three
D. Four

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Q5. The Ecological pyramid that is always upright:
A. Pyramid of Energy
B. Pyramid of Biomass
C. Pyramid of Number
D. None of the options

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Q6. The main components of photochemical smog are:
A. Water Vapour
B. Sulphur Dioxide
C. Oxides of Nitrogen
D. All options are correct

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Q7. Which of the following chromosomes are responsible for most of the sexlinked traits?
A. 13
B. Y
C. 15
D. X

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Q8. The taxonomic unit ‘Phylum’ in the classification of animals is equivalent to which hierarchical level in classification of plants:
A. Class
B. Order
C. Division
D. Family

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Q9. The anthesis is a phenomenon, which refers to:
A. Development of anthers
B. Stigma receptors
C. Opening of flower bud
D. Reproduction in plants

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Q10. The fruit of coconut is:
A. Berry
B. Drupe
C. Nut
D. Pome

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