What are the conditions necessary for autotrophic nutrition and what are its by products ?

What is the role of saliva in digestion of food?

How does the digestion of fat take place in our body? Where does this process take place?

By fission of pyruvate, it gives carbon dioxide, water and energy and this reaction takes place in : (a) cytoplasm (b) mitochondria (c) chloroplast (d) Nucleus.

For autotrophic nutrition _________ is necessary. (a) carbon dioxide and water (b) chlorophyll (c) sunlight (d) all of the above.

Xylem in plant is responsible for : (a) transport of water (b) transport of food (c) carrying amino acids (d) carrying oxygen