science mcq class 10

25 This gives rigidity to the cell 1. cell membrane 2. cell wall 3. nucleus 4. none

24 This is necessary for the preparation of slide 1. dropper 2. needle 3. cover slip 4. all of the above

23 The following one is a staining agent ....... 1. red ink 2. saffranine 3. methylene blue 4. all of the above

22 This will result in plants if there are not stomata in terrestrial plants (mostly) 1. no transpiration will occur 2. no exchange of gases will takes place 3. there will be no affect on plants 4. both 1 and b