Demerits - Monocotyledons have been placed before dicotyledons in the system which is against the modern phylogenetic concepts, which was... View Article
Merits - Plants are grouped in a logical sequence of progressive evolution. Hence, it is a phylogenetic system Gymnosperms are treated as a... View Article
It is a characteristic fruit in the citrus species. The fruit is developed from superior, multicarpellary and syncarpous ovaries where the... View Article
As a result of fertilization, the following changes are observed in the flower - Diploid zygote is formed which develops into an embryo (2n)... View Article
Generally, three fusions occur in the embryo sac as follows - The fusion of two polar nuclei to form a secondary nucleus during embryo sac... View Article
The continued self-pollination through generations results in a weaker progeny as there is no genetic recombination. Due to cross-pollination... View Article
Flowers of Salvia have two stamens which are epipetalous. The two anther lobes are connected by a long curved connective. One of the anther lobes... View Article
Nectar is a sugary fluid or honey produced by many flowers. The gland that produces nectar is called the nectary. This may be present on the... View Article
Anemophily is pollination by wind. The anemophilous flowers exhibit these features - Flowers are small They do not have attractive colour... View Article
Even if self-pollination is normally prevented, in some flowers, autogamy becomes a rule under the following conditions - Cleistogamy - this... View Article
Ovules are classified into four main types based on the position of the micropyle with reference to the funiculus (ovule's stalk) - Type of... View Article
One of the steps in the cultivation of mushrooms is casing. Casing involves the covering of compost with a thin layer of sterile soil or any... View Article
General features of fungal members are - The plant body is called mycelium composed of hyaline, tubular, filamentous structures known as... View Article
Fossil diatoms form diatomaceous earth. Commercially, it is called diatomite or kieselguhr. Due to its lightweight, porosity and capacity to... View Article
Differences between bacteria and cyanobacteria are as follows - Attribute Bacteria Cyanobacteria Diameter of cell Typically ranges from... View Article
One of the methods through which vegetative reproduction exists in Nostoc is akinetes. Akinetes are resting pores formed to tide over adverse... View Article
Vegetative reproduction exists in Nostoc in several methods. One of which is hormogonium. Hormogonium is part of the trichome between two... View Article
