Biology - MOST IMPORTANT Delhi Police Previous Year Questions
Practice real questions from previous year exams of Delhi Police.
📘 Cell Structure and Organelles📚 Cell Membrane (Plasma Membrane)
Q1
What types of proteins reside within the bilayer membrane that surrounds cells and organelles, and play an important role in the movement of molecules across them and the transmission of energy and signals?
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📘 Important Scientists of Biology📚 Other scientists and discoveries
Q2
Who conceptualised the idea about animal ecology in 1927?
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📘 Classification of Kingdom📚 Classes of Vertebrates: Amphibians
Q3
Which of the following is NOT an amphibian animal?
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📘 Nervous System📚 Receptors (Olfactory, Gustatory, etc.)
Q4
What are the paired organs of balance commonly found in aquatic invertebrates which are usually fluid-filled vesicles with sensory hairs?
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📘 Cell Division📚 Misc
Q5
Which of the following statements is NOT correct about cell cycle?
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📘 Classification of Kingdom📚 Phylum Platyhelminthes
Q6
How many openings does the digestive system in Platyhelminthes have?
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📘 Botany- Plant Classification- Phanerogams📚 Misc
Q7
Which of the given statements about Phylum Angiosperms are correct? A. Angiosperms are non-vascular plants with stems, roots and leaves. B. The seeds of the angiosperm are naked. C. These make up the majority of all plants on earth. D. The seeds develop inside the plant organs and form fruit.
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📘 Classification of Kingdom📚 Phylum Arthropoda
Q8
Which species of Arthropods is horseshoe shaped, with hard shell and spine-like tail?
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📘 Botany- Plant Classification- Cryptogams📚 Pteridophyta
Q9
Which of the following is an example of Pteridophytes?
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📘 Botany- Plant Classification- Cryptogams📚 Pteridophyta
Q10
Who is the only living representative of the extremely ancient and diverse group, Sphenopsida, commonly known as ‘horsetails’?
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📘 Hormone related Diseases📚 Cushing's Syndrome
Q11
Which syndrome causes a fatty hump between the shoulders, a round face and pink or purple stretch marks on the skin?
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📘 Botany- Plant Classification- Phanerogams📚 Gymnosperm
Q12
Which is the oldest living tree species with fan-shaped leaves commonly used in the treatment of blood disorders and memory issues?
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📘 Botany- Plant Classification- Cryptogams📚 Thallophyta- Algae
Q13
Which genus of the Rhodophyceae family possesses an erect series of branches and a filamentous prostrate section attached to the substratum by means of unicellular rhizoids?
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📘 Cell Structure and Organelles📚 Vacuoles
Q14
Vacuoles in plant cells can occupy up to what percentage of the cell's volume?
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📘 Reproduction in Organisms- VII (Sexual Reproduction in Plants)📚 Fertilization
Q15
Which physical component is required for transfer of antherozoids?
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📘 Cell Structure and Organelles📚 Cell Membrane (Plasma Membrane)
Q16
When was Singer and Nicolson's fluid mosaic model accepted as the foundational model for the interpretation of existing data on membrane proteins and lipids, and their dynamics?
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📘 Botany- Plant Classification- Phanerogams📚 Misc
Q17
Which of the following is the most dominant flora of the plant kingdom?
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📘 Cell Fundamentals📚 Discovery of Cell and its Parts
Q18
Who is credited with the discovery of the cell after observing cork slices under a microscope?
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📘 Cell Structure and Organelles📚 Mitochondria
Q19
Which cell organelle is known as the 'powerhouse of the cell' because it is the site of cellular respiration and ATP production?
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📘 Cellular Transport📚 Hypotonic, Isotonic and Hypertonic Solutions
Q20
What happens to an animal cell when it is placed in a hypotonic solution?
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