Gymnosperms and angiosperms, which are seed plants, alternate between ( 2 ) generations.
Gymnosperms are non-flowering plants with (EXPOSED SEEDS)
and angiosperms are flowering plants with . ( PROTECTED SEEDS)
Sporophytes produce spores for reproduction. In seed plants, the male reproductive structure produces , (MICROSPORES)
and the female reproductive structure produces . (MEGASPORES)
Gametophytes produce (GAMETES)
through the process of . (MITOSIS)
Answers are in the question yw :)

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

c. live where it’s cold and icy