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.  

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.