Which of the following describes advantages to using seeds as part of a reproductive strategy?

a. faster evolution through alternation of generations
b. gametes survive extensive radiation and heat
c. hydrodynamic locomotive forces and variable gametophyte generation
d. disperse offspring through both time and space
e. sufficient food and shelter to allow gamete survival

Explanation:

Gametes are able to survive extensive heat and radiation. The gametes have storage tissue that supply nutrients needed, sustain growth and protective coat this hardened tissue prevent dessication i.e dryness through loss of water and maintain its water level. Abscissic acid helps keep the plant in shape if desssication occur. Ability to regulate fluid helps maintain heat.

d. disperse offspring through both time and space, seeds are disperse via diverse means such as insect, wind, mechanical transport. The protective covering on the seeds help them to last longer and protect damage to the cells till they get a favourable condition to establish and grow. Hence offspring can be disperse in space and time.

Seeds contains endosperm which are food reserves for developing embryo. In seeds adequate nutrients required for growth are supplied for gamete to survive

Alteration of generation occur in plant where a multicellular gametophyte that has n chromosome i.e haploid chromosome will alternates with

A diploid sporophyte with 2n chromosome this two then fuse to products a gametes.

Hence, A,B,D,E are correct

but c. hydrodynamic locomotive forces and variable gametophyte generation is not correct because Locomotive forces and variable gametophytic generation in seed plants do not often occur. Gametophytes produces pollen and embryo sacs.

substitution is the answer in this case

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: