The following points highlight the three families under which cordaitales has been classified. The families are:- 1. Pityaceae 2. Poroxylaceae 3. Cordaitaceae. Family # 1. Pityaceae: Pityaceae is known only from trunks of wood and a few vegetative shoots. Occurring in the Devonian and the Lower Carboniferous, they comprise the oldest of the Cordaitales. Arnold […]
Classification of Cordaitales: 3 Families | Plants
Article Shared by 
Cycas: Distribution, Reproduction and Economic Importance
Article Shared by 
In this article we will discuss about:- 1. Distribution of Cycas 2. Morphological Features of Cycas 3. Internal Structure 4. Reproduction 5. Economic Importance. Distribution of Cycas: It is the only genus of the family Cycadaceae, which is represented in India. It has got about 15 species (Sporne, 1965), 20 species (Willis, 1966) which are […]
Gymnosperms: Definition, External Features and Reproduction
Article Shared by
In this article we will discuss about:- 1. Definition of Gymnosperms 2. External Features of Gymnosperms 3. Classification 4. Internal Structure 5. Reproduction 6. Affinities and Relationship 7. Evolutionary Significance. Definition of Gymnosperms: The term gymnosperms (gymnos = naked; sperma = seed) was introduced by Theophrastus in 300 BC to describe plants with unprotected seeds. […]
This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Answer Now and help others.
Answer Now
Answer Now
Here's how it works:
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top
Powered by WordPress. Designed by 