Will give
which statement about plant classification below is true?
a. no nonvascular plants bear seeds, but not all vascular plants bear seeds
b. not all angiosperms produce flowers, but all gymnosperms produce cones.
c. not all nonvascular plants bear seeds, but all vascular plants do bear seeds.
d. all vascular plants are angiosperms, but not all nonvascular plants are mosses.

No nonvascular plants bear seeds, but not all vascular plants bear seeds (Ans A)

Explanation:

Vascular plants having a vascular system that includes phloem and xylem which are helping them to transport food , water and minerals to other parts of the plant. Examples of vascular plants are: Angiosperm (Seed producing plant), gymnosperm (Seed producing plant), Ferns (Non-seed plant), fern is the example of not all vascular plant bear seeds.

Non-vascular plants do not have a vascular system. They also lack true seed, leaves & flowers. Instead of roots they have rhizoids to absorb water and minerals. Examples of non-vascular plants are : Mosses , Liverworts & Hornworts.  

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.