Q1. What is the main function of the gelatinous sheath found in cyanobacteria?A. Protection and buoyancyB. MovementC. Digestion of foodD. Protein synthesis
Q2. Which of the following organisms is a cyanobacterium?A. EuglenaB. ParameciumC. NostocD. Plasmodium
Q3. Which of the following statements about diatoms is correct?A. Diatoms are exclusively heterotrophic.B. Diatoms have silica-embedded cell walls.C. Diatoms lack a nucleus.D. Diatoms reproduce only sexually.
Q4. Which of the following statements about diatoms is correct?A. Diatoms have silica-embedded cell walls.B. Diatoms reproduce only sexually.C. Diatoms are prokaryotic organisms.D. Diatoms do not contribute to marine ecosystems.
Q5. Which of the following statements about Mycoplasma is correct?A. Mycoplasma have a well-defined cell wall.B. Mycoplasma are the smallest living cells known.C. Mycoplasma can perform photosynthesis.D. Mycoplasma have a double-membrane nucleus.
Q6. Which of the following is a distinguishing feature of dinoflagellates?A. Presence of ciliaB. Two flagella in different orientationsC. Cell wall made of silicaD. Parasitic mode of nutrition
Q7. Which of the following groups includes organisms that use pseudopodia for locomotion?A. CiliatesB. FlagellatesC. AmoeboidsD. Sporozoans
Q8. Which type of spore is formed by fungi during unfavorable conditions?A. ZoosporeB. BasidiosporeC. ConidiaD. Oospore
Q9. Which of the following statements about Mycoplasma is incorrect?A. Mycoplasma are the smallest free-living organisms.B. Mycoplasma lack a cell wall.C. Mycoplasma contain peptidoglycan in their cell walls.D. Mycoplasma are resistant to antibiotics that target cell wall synthesis.
Q10. Which of the following statements about diatoms is correct?A. Diatoms have silica-embedded cell walls.B. Diatoms are exclusively heterotrophic.C. Diatoms do not contribute to oxygen production.D. Diatoms lack a nucleus.