CARBOHYDRATES
rubabCarbohydrates are polyhydroxy aldehydes or ketones. Carbohydrates are sugars and their polymers. They are composed of carbon, hydrogen and oxygen. The word carbohydrates literally mean hydrated carbons. The ratio of…
Factors which affect transpiration rate
sanaFollowing factors affect the rate of transpiration: (a) External factors Humidity of air Water is evaporated through the stomata. This follows the simple law of diffusion. 'Ibis diffusion can take…
Subjective Question Of Classification
sidraDiscuss different systems of classification. Describe artificial classification of Carolus Linnaeus. Describe classification system of .fussieu. Describe classification system of Bentham and Hooker. Discuss classification system of Wilhelm Eichler. Discuss…
Transpiration in Plants and its types
The evaporation of water from the aerial part of plant is called transpiration. Transpiration is not a purely ph) sical process like evaporation. It is a vital phenomenon. It plays…
Theories of acent of SAP in Plants
Here are following theories which explain the ascent of sap in plants: a) Root pressure (b) Capillarity (c) Vital theory and (d) Cohesion-tension theory. (a) ROOT PRESSURE The hydrostatic pressure…
DEFINITIONS AND KEY POINTS FOR CLASSIFICATION
Classification The arrangement of plants into groups and sub-groups on the basis of similarities is called classification. The characters which are uses as basis of classification are called criteria of…
Bessey’s Classification system
Charles E. Bessey (1845-1915) proposed a modified system of classification of Bentham and Hooker. He separated the gymnosperms from angiosperms. He reorganized the orders of angiosperms. His system is popularly…
SEX LINKED INHERITANC OBJECTIVES
Multiple Choice Questions (MCQs) I. Sex chromosomes were discovered by: (a) Carl Correns (b) Nilsson Fhle(c) 1.1 1. Morgan (d) Mendel The J shaped chromosome in drosophila is: (a) Autosomes…
RANSLOCATION (ASCENT OF SAP
The upward movement of water in a plant is called-the ascent of sap. A large quantity of water is absorbed by the roots. It must be conducted upwards to the…
SEX LINKED INHERITANC SHORT QUESTIONS
How many chromosomes are present in male and female grasshopper? A ns: The numbers of chromosomes in male are 23. It has I I pairs and one X chromosome. So…