internal and external fertilization

This is the simplest type of modem to install because you don't have to open the computer. External modems have their own power supply and connect with a cable to a computer's serial port. The telephone line plugs into a socket on the rear panel of the modem. Because external m..

Most internal modems come installed in the computer you buy. Internal modems are more directly integrated into the computer system and, therefore, do not need any special attention. Internal modems are activated when you run a communication programme and are turned of..

: Include different types of soils, their fertility and vast biological wealth in them. Forest resource: Include all types of forests and other naturally grown plant sources. Crop resources: include all cultivated crops and their potentialities. Marine and aquatic resources: Include plant..

Respiratory system - Lungs are the respiratory organs. The passage way for air is formed by external nostrils, pharynx, larynx, trachea and bronchi. Lungs contain large number of minute alveoli in which external respiration takes place. Surrounding the lungs and the heart is a t..

Photosynthesis is influenced by two categories of factors - external or environmental and internal or plant factors. According to the law of limiting factors, put forward by F.F.Blackman in 1905, photosynthesis is limited by the most limiting facto..

In multicellular organisms, the male gametes called the are produced by the male reproductive part and the female gametes called the eggs are produced by the female reproductive part. The male gamete of one individual fertilizes the female gamete of another individual to produce the ..

>hermaphrodite . However, fertilisation is between the gametes of different individuals. Most of the animals are unisexual with an individual only producing either male or female gametes. The male gamete of one individual fertilizes with the female gamete of another individual to produce ..

Plant growth is influenced by a number of external and internal factor..

Types of Modems - Depending upon how your computer is configured and your preferences, you can have an external, internal or PC modem card. All three types work the same way, but each has its advantages and disadvantag..

Sense Organs - Eyes - There are five sense organs in humans - eyes, ears, nose, tongue and skin. Sensation is the conscious or unconscious awareness of external or internal stimuli. Sensing external environment is extroception. Example: Reading a page Sensing of bodys ..