Ectocarpus Occurrence, Structure ,Reproduction & Division
abidaOccurrence Ectocarpus is a brown alga. It is abundantly found throughout the world in cold waters. A few species occur in fresh waters. The plant grows attached to rocks and…
POLLUTION
sanaPollution has been defined by Odum (1971) as "the undesirable change in the physical, chemical or biological characteristics of air, land and water that may affect the human life. The…
SHORT QUESTIONS OF ANGIOSPERMIC FAMILIES
sidraGive medicinal and condiment uses of family Ranunculaceae: ANS:Medicinal plants: Some members are used as medicinal plants. Aconitwn yields an alkaloid aconitina. Thu ields mamira. It is used in the…
SALINITY
The soil in which salt crust is left due to evaporation of water is called saline soil and this problem is called salinity. A saline soil has electrical conductivity of…
Type : Laminaria – Occurrence , Structure & Reproduction
Occurrence Laminaria is found along coasts of oceans. Most of the species are perennial. Vegetative structure Plant body The plant body is sporophyte. The sporophyte is differentiated into three parts:…
WATER LOGGING
The soil which is saturated with water is called water logged soil and this problem is called water logging. Causes of water Logging Pakistan has one of the best canal…
Conservation
The management of the earth resources to restore and maintain balance between human requirement and other species in the world is called conservation. Conservation includes continuous renewing of renewable resources.…
TYPE: Pinnularia – occurance ,reproduction & division
Occurrence Pinnularia is a fresh water alga. It is found in pond. It is also present on the moist soil It is unicellular. Its cell is elongated and elliptical. Cell…
BIODIVERSITY
The variety of living organisms in an ecosystem is called biodiversity. The exact number of species in the world is not known. The taxonomists have described about 1.4 million species.…
ARIDITY
The word arid means dry. The dry land is called arid land. This problem is called aridity. Arid climate is defined as the climate in which precipitation is less than…