gymnosperms clasaification
Answers
Answer:
gymnosperms are divided into 4 divisions
Explanation:
these divisions are pinophyta cycadophyta gentophyta ginkagophyta
Gymnosperm
They are naked seed organism they don't have fruit no ovary no fruit.
Gymnosperm includes medium size tree or tall trees and shrubs .
Sequoid is the gymnosperm which is one of the tallest tree species .
Sporophyte denoted main plant body.
They basically have tap root and stem are branched and unbranched .
The leaves and needle like structure have sunken stomata and thick wasey cuticle leaves .
The size of the trees can be 366 feet .
Roots in some of the gymnosperm has fungal association in the form of a mycorrhiza , specially pine have this type of fungal , pine can't survive without this .
Cycas has small coralloid root cycas have small specialised root which is associated with nitrogen fixing .
They are negatively geotropic .
The leaves may be simple or compound well adapted to live in extreme temperature humidity and wind in some of the trees there and needle like leaves reduces the surface area there thick cuticle and sunken stomata also help to reduce water loss .
Some extra information about gymnosperm :-
When is seed generated it is divided into two parts upper part is plumule and lower part is radical then corn like structure in female and male both there is present .