Question

3. Very short answer type questions : (i) What are Guard cells? (ii) Name the gas that is produced during photosynthesis? (iii) Write the word equation for photosynthesis. (iv) Give an example of Saprophyte. 4. Short answer type questions : (i) Why do organisms take food? (ii) Why is photosynthesis named so? (iii) Why is Cuscuta categorized as parasite? (iv) Plant cannot use the nitrogen present in the soil directly, why? 5. Long answer questions: (i) Differentiate between (a) Autotrophs and Heterotrophs (b) Parasite and Saprotroph (ii) (a) Why are insectivorous plants called partial heterotrophs? (b) What is the stored food form in sunflower seeds? (c) Why are manure / fertilizers spread in soil?

Answer 1

Answer:

3.i)found in epidermis of leaf

ii)Oxygen

iii)Carbon dioxide + water ----------> glucose + oxygen

iv)Yeast

4.I) food is an essential component of survival

ji)it is a light reaction

iii)depends upon plant

iv)Fixation doesn't occur normally