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Signify the term - opercular gill.
The gill found in bony fish. Operculum is the outer covering of the gill. When it's drawn away from the body, it pulls water inside the buccal cavity across the gills. This motion, in combination with opening and closing of the mouth, aerates the fish gills.
Polarity in plants
In what ways is water lost from the body? Water is lost from the body by a) Evaporation (lungs and skin), b) Urination and defaecation (faeces always have water).
Which of the below are stems of plants that are leaf like in form, are green and perform functions of leaves. Additionally, they may bear fruit, flowers and temporary leaves?
Define about the Population Dynamics? In this unit, we are going to study about human population who eventually suffer from these problems. Why do we want to study about human
Menstrual cycle in human beings: 1) The cycle of changes in the female reproductive system that leads to formation of Ovum is called 'menstrual cycle'. It occurs once in 28 to
Characteristics of River Systems The basic function of the rivers is to convey surplus rain water from land to sea. Annually the rivers carry fresh water, equivalent to 25 cm
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What are the main structures within the cell nucleus? Within the cell nucleus the major structures are: the nucleolus, an optically dense region, spherical shaped, where there
Explain about the Magnesium - macro minerals? Magnesium (Mg) ranks fourth in overall abundance in body among the cations. It is also the least abundant among macro minerals, th
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