Biology (School & UG)

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Q. What is the role of collenchyma cells in plants?
  • A. Storage of starch
  • B. Support in young stems and leaves
  • C. Water transport
  • D. Photosynthesis
Q. What is the role of cytokines in the immune response?
  • A. To directly kill pathogens
  • B. To signal and regulate immune cell activity
  • C. To form antibodies
  • D. To enhance phagocytosis
Q. What is the role of cytokinins in plant development?
  • A. Promote leaf senescence
  • B. Stimulate cell division
  • C. Inhibit root growth
  • D. Enhance photosynthesis
Q. What is the role of cytokinins in plant growth?
  • A. Promote root growth
  • B. Stimulate cell division
  • C. Inhibit leaf senescence
  • D. All of the above
Q. What is the role of dendritic cells in the immune response?
  • A. To produce antibodies
  • B. To present antigens to T cells
  • C. To kill infected cells
  • D. To secrete cytokines
Q. What is the role of dendritic cells in the immune system?
  • A. Produce antibodies
  • B. Present antigens to T cells
  • C. Kill pathogens directly
  • D. Secrete cytokines
Q. What is the role of essential oils derived from plants in human health?
  • A. Photosynthesis
  • B. Antimicrobial properties
  • C. Water absorption
  • D. Nutrient storage
Q. What is the role of essential oils in plants that can also benefit human health?
  • A. Photosynthesis
  • B. Defense against pests
  • C. Water absorption
  • D. Nutrient storage
Q. What is the role of essential oils in plants that can also have therapeutic effects on humans?
  • A. Photosynthesis
  • B. Defense mechanisms
  • C. Water storage
  • D. Nutrient absorption
Q. What is the role of essential oils in plants?
  • A. Photosynthesis
  • B. Defense against herbivores
  • C. Water storage
  • D. Nutrient absorption
Q. What is the role of fiber in the human digestive system?
  • A. Provides energy
  • B. Aids in digestion
  • C. Increases fat absorption
  • D. Stimulates bile production
Q. What is the role of helper T cells in the immune response?
  • A. Directly kill infected cells
  • B. Stimulate B cells and cytotoxic T cells
  • C. Produce antibodies
  • D. Engulf pathogens
Q. What is the role of histones in plant cells?
  • A. Energy production
  • B. DNA packaging
  • C. Photosynthesis
  • D. Cell division
Q. What is the role of messenger RNA (mRNA) in gene expression?
  • A. To replicate DNA
  • B. To carry genetic information from DNA to ribosomes
  • C. To form the structure of ribosomes
  • D. To transport amino acids
Q. What is the role of messenger RNA (mRNA)?
  • A. To store genetic information
  • B. To transport amino acids
  • C. To carry genetic information from DNA to ribosomes
  • D. To form the structure of ribosomes
Q. What is the role of monoclonal antibodies in biotechnology?
  • A. To enhance photosynthesis
  • B. To target specific cells in therapy
  • C. To produce insulin
  • D. To modify genetic sequences
Q. What is the role of mRNA in gene expression?
  • A. To replicate DNA
  • B. To transport amino acids
  • C. To carry genetic information from DNA to ribosomes
  • D. To form the ribosome structure
Q. What is the role of mutations in plant evolution?
  • A. They are harmful and should be avoided
  • B. They provide raw material for evolution
  • C. They have no role in evolution
  • D. They only occur in animals
Q. What is the role of mycorrhizae in plant ecology?
  • A. Water storage
  • B. Nutrient absorption
  • C. Photosynthesis
  • D. Seed dispersal
Q. What is the role of mycorrhizae in plant growth?
  • A. Water storage
  • B. Nutrient absorption
  • C. Photosynthesis
  • D. Gas exchange
Q. What is the role of mycorrhizal fungi in plant growth?
  • A. Photosynthesis
  • B. Nutrient absorption
  • C. Water storage
  • D. Pollination
Q. What is the role of NADPH in photosynthesis?
  • A. Energy storage
  • B. Electron transport
  • C. Carbon fixation
  • D. Light absorption
Q. What is the role of phloem in plants?
  • A. Transport of water
  • B. Transport of sugars
  • C. Support and structure
  • D. Storage of nutrients
Q. What is the role of phytochemicals in human health?
  • A. Provide energy
  • B. Enhance flavor
  • C. Prevent disease
  • D. Increase growth rate
Q. What is the role of phytosterols found in plants regarding human health?
  • A. Increase cholesterol levels
  • B. Lower cholesterol levels
  • C. Enhance flavor
  • D. Promote growth
Q. What is the role of phytosterols in human health?
  • A. Increase blood sugar
  • B. Lower cholesterol
  • C. Enhance digestion
  • D. Boost immunity
Q. What is the role of pollinators in plant reproduction?
  • A. To provide water to the plants
  • B. To assist in seed dispersal
  • C. To transfer pollen from male to female structures
  • D. To enhance photosynthesis
Q. What is the role of pollinators in the evolution of flowering plants?
  • A. They reduce genetic diversity
  • B. They facilitate cross-pollination
  • C. They increase competition
  • D. They have no role
Q. What is the role of restriction enzymes in molecular biology?
  • A. To cut DNA at specific sequences
  • B. To synthesize RNA
  • C. To amplify DNA
  • D. To repair DNA
Q. What is the role of Rhizobium bacteria in legume plants?
  • A. Decomposing organic matter
  • B. Fixing atmospheric nitrogen
  • C. Promoting root growth
  • D. Producing secondary metabolites
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