Most of the plants release many substances from their cell cytoplasm to the exterior and they are called as Plant-secretions. Among these secretions, some are beneficial to the plant and some are not. The beneficial substances secreted from the plant parts are called as secretions. The chemical composition of plant […]
Gymnosperms PPT: What are Gymnosperms? Characteristics of Gymnosperms, Morphology of Gymnosperms, Reproduction of Gymnosperms, Anatomy of Gymnosperms, Male Cone and Female Cone, Microsporophyll and Megasporophyll, Microsporangium and Megasporangium, Megaspore and Microspores of Gymnosperms; Male and Female Gametophytes of Gymnosperms, Fertilization, Zygote and Embryo development of Gymnosperms, Life Cycle and Alternation […]
Gymnosperms are primitive seed-producing plants of Spermatophytes (Phanerogams). They are ‘Naked-Seed’ Plants. The term is derived from two Greek words: ‘gymnos’ meaning naked and ‘sperma’ meaning seeds. They are characterized by naked ovules (i.e., ovule without the ovary). The ovules of Gymnosperms are borne directly on the surface of the […]
Hydathodes are specialized pores (openings) particularly present on the leaf margins, which exudes or secretes drops of water. The exudation of water as drops from the tip or margin of the leaves is called guttation. The process of guttation is facilitated by the hydathodes. They are also called as Water […]
Kerala PSC HSST Zoology 2018 Question Paper with Answer Key Higher Secondary School Teacher: Junior Question Paper Code 051/2018 Original solved question paper of Kerala PSC HSST Zoology Junior (Higher Secondary School Teacher Botany) examination conducted by Kerala PSC (Public Service Commission) on 19/04/2018 for the appointment of HSST (Higher […]