Observe the given figure representing substances (P, Q,
R and S) taken in or given out during photosynthesis
and select the incorrect option regarding them.
AQ could be the gas which is fixed through
photosynthesis to form carbohydrates whereas
P could be the gas which is used by plants in
respiration.
BP is the gaseous by-product of photosynthesis
whereas S is carbohydrate formed by plants
through photosynthesis.
CQ is taken up by plant leaves directly from
atmosphere through minute stomata present in
them whereas R represents water absorbed from
soil through plant roots.
DR and S show unidirectional movement within
the plant body, i.e., from source to sink.