Find the correct statements:
(a) The viability of seed can be tested out by T.T.C. (2, 3, 5, triphenyl tetrazolium chloride).
(b) The seeds being products of sexual reproduction, they generate new genetic combinations leading to variations.
(c) Entomophilous flowers are unattractive and without nectar.

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a and b

b and c

a and c

a, b and c

answer is A.

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Detailed Solution

Viability of seed is highly variable. The viability of seed can be tested out by T.T.C. (2, 3, 5, triphenyl tetrazolium chloride). The embryonal axis of living seed becomes pink in colour in the solution of T.T.C.

The seeds being products of sexual reproduction, they generate new genetic combinations leading to variations. This is because during sexual reproduction there is random segregation of paternal and maternal chromosome at the time of gamete formation and there is exchange of genetic material between homologous chromosomes during formation of gametes.

Entomophilous flowers are attractive and have nectar. Plants that are pollinated by abiotic agents are generally unattractive and nectarless.

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