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Practice each question, then open the answer or worked solution.
Choose the odd one out from below with respect to reproduction.
Ans: The correct answer is option (d) Roots of the mango tree.
Eggs of hen hatches and produces new hen, seeds of the plant give rise to new plant and buds of potato produce new potato plant but the roots of mango tree do not reproduce a new mango tree on its own.
Although organisms die, their kind continues to live on earth. Which characteristic of living organisms makes this possible?
Ans: The correct answer is option (b) Reproduction.
Reproduction is the process by which new offspring or individuals are produced.
If you happen to go to a desert, what changes do you expect to observe in the urine you excrete? You would
(i) Excrete a small amount of urine.
(ii) Excrete a large amount of urine.
(iii) Excrete concentrated urine.
(iv) Excrete very dilute urine.
Which of the above would hold true?
(a) (i) and (iii) (b) (ii) and (iv)
(c) (i) and (iv) (d) (i) and (ii)
Ans: The correct answer is an option (a) (i) and (iii) i.e. Excrete a small amount of urine and excrete concentrated urine.
Deserts have less water. So to minimize loss of water human body will excrete less amount of urine and in a concentrated form