The leaves of gymnosperms are well-adapted to withstand extremes of temperature, humidity and wind, because of which of the following features?

Assertion : The leaves in gymnosperms are well adapted to withstand extremes of temperature, humidity and wind Reason : Unlike bryophytes and pteridophytes, in gymnosperms the male and female gametophytes do not have an independent free living existence.

Assertion : The leaves in gymnosperms are well adapted to withstand extremes of temperature, humidity and wind Reason : Unlike bryophytes and pteridophytes, in gymnosperms the male and female gametophytes do not have an independent free living existence.

Assertion : The leaves in gymnosperms are well adapted to withstand extremes of temperature, humidity and wind Reason : Unlike bryophytes and pteridophytes, in gymnosperms the male and female gametophytes do not have an independent free living existence.

Pollen grains are able to tolerate extremes of temperature and desiccation because their exine consists of

Pollen grains are able to tolerate extremes of temperature and desiccation because their exine consists of:

Pollen grains are able to tolerate extremes of temperatures and desiccation because their exine consists of

Pollen grains are able to tolerate extremes of temperature and desiccation because their exine consists of