Prepare for NEET Biology Biological Classification with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert guidance to classify and identify organisms.
Bare rock surfaces are initially colonized by organisms like lichens. What is the ecological term for such organisms?
Pioneer species
Climax community
Keystone species
Indicator species
Which characteristic allows lichens to thrive as pioneer species on bare rock?
Secretion of rock-dissolving acids
Deep root systems
Tolerance to shade
Dependence on organic matter
How do viroids differ from viruses?
RNA without protein coat
DNA with protein coat
DNA without protein coat
RNA with protein coat
Which of the following statements accurately describes the structural composition of a viroid?
Double-stranded DNA with a protein coat
Circular single-stranded RNA without a protein coat
Single-stranded DNA without a protein coat
Double-stranded RNA with a protein coat
Which component is ABSENT in viroids but PRESENT in viruses?
RNA
Protein coat
Genetic material
Infectivity
Identify the incorrect statement regarding cell division:
Meiosis results in four daughter cells with half the number of chromosomes as the parent cell.
Mitosis produces genetically diverse daughter cells.
Cytokinesis is the division of the cytoplasm.
Mitosis is essential for growth and repair of tissues.
Which of the following statements is NOT true about the differences between mitosis and meiosis?
Mitosis results in two daughter cells, while meiosis results in four daughter cells.
Mitosis results in genetically identical daughter cells, while meiosis results in genetically diverse daughter cells.
Mitosis is involved in growth and repair, while meiosis is involved in sexual reproduction.
Mitosis results in haploid cells, while meiosis results in diploid cells.
Concerning the role of cell division in organisms, which statement is FALSE?
Cell division is essential for growth and development.
Cell division is involved in tissue repair and regeneration.
Cell division produces energy for the organism.
Cell division plays a role in reproduction.
Which statement incorrectly describes a feature of cell division?
Mitosis results in two diploid cells.
Meiosis results in two diploid cells.
DNA replication occurs before both mitosis and meiosis.
Meiosis produces genetically diverse cells.
Which group of organisms possesses cell walls composed of two thin overlapping shells that fit together like a box and lid?
Dinoflagellates
Diatoms
Euglenoids
Green algae
