(i) Draw a well-labelled diagram to show the anaphase stage of mitosis in a cell having four chromosomes.
(ii) State any two harmful effects of acid rain.
(iii) Expand the following biological abbreviations.
(1) NADP (2) ACT

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Solution

(ii) Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. It corrodes buildings and metal structures. It also makes soil acidic which becomes unsuitable for cultivation.
(iii) (1) NADP: Nicotinamide Adenine Dinucleotide Phosphate. It acts as a cofactor in anabolic reaction.
(2) ACT: Adrenocorticotropin. It is a hormone which stimulates the production and release of cortisol from the cortex of the adrenal gland.

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(i) Draw a well-labelled diagram to show the anaphase stage of mitosis in a cell having four chromosomes.(ii) State any two harmful effects of acid rain.(iii) Expand the following biological abbreviations. (1) NADP (2) ACT

(i) Draw a well-labelled diagram to show the anaphase stage of mitosis in a cell having four chromosomes.
(ii) State any two harmful effects of acid rain.
(iii) Expand the following biological abbreviations.
(1) NADP (2) ACT