Q1 MULTIPLE CHOICE QUESTIONS
1. Plants take carbon dioxide from the atmosphere mainly through their:
a) roots b)stem c)flowers d)leaves
2. Main site of photosynthesis
a)Leaf b)Stem c)Chloroplast d)Guard cells
3. Photosynthesis is a
a)Catabolic process b)Parabolic process c)Amphibolic process d)Photochemical process
4. Entry of which substance in the guard cells opens the stoma?
a)Carbohydrate b)Carbon dioxide c)Starch d)Water
5. During an experiment on photosynthesis, what is the role of KOH?
a)Absorption of any carbon dioxide b)Supplying carbon dioxide for photosynthesis
c)Supplying water vapour for photosynthesis d)Removal of any oxygen
6. In the absence of which of the following will photosynthesis not occur in leaves?
a) Guard cells b) Chlorophyll c) Vacuole d) Space between cells
7. Pitcher plant traps insects because it
a) is a heterotrophic b) grows in soils which lack in nitrogen
c) does not have chlorophyll d) has a digestive system like human beings
8. The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is
a)autotrophic b) insectivorous c) saprophytic d) parasitic
9. Two organisms are good friends and live together. One provides shelter, water, and nutrients
while the other prepares and provides food. Such an association of organisms is termed as
a) saprophyte b) parasite c) autotroph d) symbiosis
10. Which of the following raw material is available in the air for photosynthesis?
a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen