What classes are angiosperms divided into? Indicate the main signs by which this division occurs.

1) There are two classes of angiosperms – monocotyledonous and dicotyledonous.
2) Monocotyledonous plants have one cotyledon in the seed, arc or parallel venation of leaves, fibrous root system, three-membered flower.
3) Dicotyledonous plants have two cotyledons in the seed, reticular leaf venation and the root root system, a four or five-membered flower.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.