Which of the following statements are correct?
P – Cobalt ions help in the opening of stomata.
Q – Strawberry leaves show guttation.
R – Duplicated chromosomes are joined at centrosome.
S – Conversion of ADP to ATP occurs in the light dependent phase.
- (a)P and R
- (b)Q and R
- (c)P and S
- (d)Q and S
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Q and S
Reason — Guttation is the loss of water as droplets along the margins of leaves through hydathodes. It can be observed in many plants and is quite common in banana, nasturtium and strawberry so Q is correct. ADP is converted to ATP during the light dependent phase of photosynthesis, so S is correct. P is wrong because stomatal opening takes place by potassium ion exchange and not by cobalt ions. R is wrong because duplicated chromosomes are joined at the centromere and not at the centrosome.