Class 10
1.Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva? (a) Starch breaking down into sugars. (b) Proteins breaking down into amino acids. (c) Absorption of vitamins. (d) Fats breaking down into fatty acids and glycerol. 2.Which among the following is a unicellular organism that reproduces by budding: (a) Hydra (b) Planaria (c) Yeast (d) Spirogyra 3.Which among the following does not reproduce by spore formation: (a) Penicillium fungus (b) Yeast fungus (c) Mucor fungus (d) Rhizopus fungus 4. The rapid spreading of bread mould on slices of bread are due to: (i) Presence of large number of spores in air (ii) Presence of large number of thread-like branched hyphae (iii) Presence of moisture and nutrients (iv) Formation of round shaped sporangia (a) (i) and (iii) (b) (ii) and (iv) (c) (i) and (ii) (d) (iii) and (iv) 5. The asexual reproduction in the Spirogyra involves: (a) Breaking up of filaments into smaller bits (b) Division of