Read this article in Hindi to learn about the modifications of adventitious roots. मूसला जड़ों के समान ही अपस्थानिक जड़ें (झकड़ा जड़ें) भी भोजन संग्रह हेतु या पौधे को सहारा देने हेतु विभिन्न प्रकार से रूपान्तरित हो जाती हैं । इनमें से कुछ मुख्य निम्नलिखित हैं: 1. सतावर (Asparagus): (i) यह सतावर की अपस्थानिक जड़ों का गुच्छे के रूप में [...]
The following points highlight the top three theories of root apical meristem in plants. The theories are: 1. Apical Cell Theory 2. Histogen Theory 3. Korper-Kappe Theory. 1. Apical Cell Theory: This theory was proposed by Nageli who drew the attention to the occurrence of a single apical cell or apical initial that composes the root meristem. A single apical [...]
The following points highlight the three main types of structures of root-apex according to plant groups. The types are: 1. Root Apex of Pteridophyte 2. Root Apex of Gymnosperm 3. Root Apex of Angiosperm. Type # 1. Root Apex of Pteridophyte: Most of the vascular cryptogams have a promeristem with a single apical cell. But some members of Marattiaceae exhibit [...]