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.
Which of the following characteristics is NOT common to all protists?
Eukaryotic cell structure
Presence of a nucleus
Membrane-bound organelles
Multicellularity
Diatoms are unique due to their cell walls being composed of:
Cellulose
Chitin
Silica
Peptidoglycan
Which protist group is responsible for red tides?
Euglenoids
Diatoms
Dinoflagellates
Slime molds
Which group of protists includes organisms with a pellicle, providing flexibility and shape?
Dinoflagellates
Slime molds
Euglenoids
Diatoms
Plasmodium, the causative agent of malaria, belongs to which group of protists?
Amoeboids
Flagellates
Ciliates
Sporozoans
Which of the following features is NOT characteristic of the Kingdom Monera?
Membrane-bound organelles
70S ribosomes
Asexual reproduction
Presence of cell wall
Methanogens, a unique group of archaebacteria, are found in which of the following environments?
Hot springs
Gut of ruminant animals
Salt lakes
Acidic soils
Which of these bacterial cell wall components is responsible for its gram-positive staining?
Thick peptidoglycan layer
Outer lipopolysaccharide layer
Teichoic acids
Thin peptidoglycan layer
Which of the following is NOT a method of genetic recombination in bacteria?
Binary fission
Transduction
Transformation
Conjugation