it's the weight of the air pressing on everything in the environment
The main function of the nematocyst is prey capture. The correct option among all the options given in the question is option "B". The nematocysts are used by Cnidarians like hydra, jellyfish etc. It is actually a specialized capsule that contains venom and it is used to paralyze and capture small preys for food and also to sting any enemy that comes near.
The correct answer is battery
<span>Karotypes are best prepared using cells that have been arrested in metaphase. In metaphase or prometaphase, the chromosomes are most condensed.</span>
C...the key is that they are photosynthetic...so they produce oxygen (like plants)!
