Which best describes fertilization and meiosis in the life cycle of plants?
i. these processes are part of the life cycle.
ii. these processes produce gametophytes.
iii. fertilization produces a zygote, and meiosis produces haploid spores.
iv. fertilization is used only by seedless plants; meiosis is used only by seed plants.

The correct answer is III. Fertilization produces a zygote, and meiosis produces haploid spores.  

As a result of meiosis in the microspore mother cell four haploid microspores are formed which develops into male gametophytes, whereas, megaspores are formed as a result of meiosis in the megaspore mother cell later megaspore develops into female gametophyte.

Fertilization is the fusion of male and female gametes to form a zygote which later develops into embryo.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger