Reasons why plants lack complex excretory organ like animals

Excretory system is defined as the process by which the waste materials are eliminated from the body of a plant, animals or human bodies. The excretory system of plants is somewhat different from animals and is quite simple. Plants can excrete their products such as-

1) Oxygen by absorbing carbon dioxide

2) Releasing water in the form of water vapor due to the evapotranspiration process

3) Releasing carbon dioxide at night

The plant bodies are so simple that it does not require any organs to remove its waste materials. So they are easily eliminated from their bodies.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus