The human brain; a comprehensive note

The brain is housed in and protected by the  cranium. It is divided into three (3) parts which are; forebrain, midbrain and hindbrain. Now let’s explain them one after another Forebrain: This is made up of the olfactory lobes and the cerebral hemispheres. Cerebrum is the largest and most dominant part of the brain. It is […]

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Blood circulation in mammals

Mammals have a closed blood circulatory system. The heart is four chambered and acts as a double pump for a double circulatory system with the pulmonary circulation completely separated from the systematic circulation.   Blood that has circulated round the body in arteries, arterioles and capillaries return to the right auricle of the heart by […]

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What is Adaptation?

Generally, organisms develop features that enable them to live (adapt) successfully and reproduce in a particular environment.  These features may be as a result of changes in structure, functions or behaviors for the purpose of survival in an environment. Definition of Adaptation Adaptation is simply defined as the ability of an organism to survive in […]

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What is ecological succession

This is a process by which ecosystem change over time. It is a product of complex interactions of biotic and a biotic factors. There is a gradual and continuous replacement of a dominant species until a relatively complex and stable ecosystem develops. The developmental stages are known as ere or several stages and final steady […]

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transpiration and factors that influence transpiration

Before looking at the factors firstly let’s dive ( know ) what is Transpiration? Definition of transpiration :¬†Transpiration is the loss of water in the form of water vapor from the plant to the atmosphere under the influence of sunlight.¬† Most water loss is through the stomata of the leaves while little is lost through […]

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Brief note on hydrophytes

Hydrophytes are plant that live in fresh water. All plants of their body is immersed in water.  They are adapted to their environment in the following ways 1.  They have the ability to float in water 2.  They have poorly developed root system 3.  Well developed stomata on the upper surface only 4.   Submerged plants […]

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Brief note on mesophytes

MESOPHYTES are land plants found in environment with adequate (moderate) water supply. They posses the following characteristics 1.  Well developed root and shoot system 2.  Broad and flattened leaves for faster rate of transpiration 3.  Waxy article covers the body surfaces to minimize water loss 4.  Stomata are present on leaves in a moderate quantity […]

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A comprehensive note on agricultural classification of plants

In Agricultural practice plants are classified according to their uses as follows : Cereal Plant :These are plants rich in carbohydrate they contain low level of protein. Their fruits are one seed small low level of protein.  Their fruits are one seed and small. They are known as grains examples are maize, rice, wheat, barley, […]

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Comprehensive note on maize crop production

A crop is a plant which is cultivated by man for some beneficial purposes. Therefore all crops are plant but not all plant are crops. CEREALS  These are crops that look like grasses having long and flat leaves. They are monocotyledonous crops. The crops are grown because of their seeds which are rich in carbohydrate […]

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A comprehensive note on animal improvement

MEANING AND AIMS OF Animal Improvement Animal improvement refers to the conscious attempts by man to improve and produce better breeds of farm animals to satisfy human needs.  The aims of animal improvement can be outlined as follows: 1. To increase the productivity of animals: Farm animals are improved upon in order to obtain higher […]

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