Get premium membership and access questions with answers, video lessons as well as revision papers.
Internal Fertilization
The more familiar form of fertilization in the animal kingdom is internal fertilization, a type of fertilization that occurs inside the female reproductive tract when sperm is deposited inside or near the female's reproductive tract. There are specific adaptation in the animal kingdom that allows sperm to be placed near an egg and reach it quite efficiently.
Another benefit to this kind of fertilization is that it can occur in a dry environment.
External Fertilization
External fertilization is a kind of fertilization where eggs are released into the environment in order to be fertilized by the male. In this kind of fertilization, a moist environment is necessary. Because;
- The gametes, ie the sperm and eggs, can dry out and become non-functional in a dry environment.
- Moist environment allows the sperm to move towards the eggs in order to fertilize them.
How it occurs. In many cases individuals of the same species found in the same area will release their gametes into the water simultaneously, this is known as spawning. In other instances this doesn't happen simultaneously. Instead, some individuals release their gametes after receiving chemical inducers that others have already done so.
Titany answered the question on September 13, 2021 at 08:52
- Draw the structure of a flower and label all the parts(Solved)
Draw the structure of a flower and label all the parts
Date posted: September 13, 2021. Answers (1)
- Compare sexual vs asexual reproduction in plants(Solved)
Compare sexual vs asexual reproduction in plants
Date posted: September 13, 2021. Answers (1)
- Define cell division(Solved)
Define cell division
Date posted: September 13, 2021. Answers (1)
- Give five classes of vertebrates(Solved)
Give five classes of vertebrates
Date posted: September 13, 2021. Answers (1)
- Describe four mechanisms of digestion(Solved)
Describe four mechanisms of digestion
Date posted: September 13, 2021. Answers (1)
- Discuss three importance of plants(Solved)
Discuss three importance of plants
Date posted: September 13, 2021. Answers (1)
- Draw a plant while labelling all the parts correctly(Solved)
Draw a plant while labelling all the parts correctly
Date posted: September 13, 2021. Answers (1)
- List three ways of disposing infectious microorganisms(Solved)
List three ways of disposing infectious microorganisms
Date posted: September 13, 2021. Answers (1)
- List three types of stain used for staining in the lab(Solved)
List three types of stain used for staining in the lab
Date posted: September 13, 2021. Answers (1)
- Describe the Nutrient Agar(Solved)
Describe the Nutrient Agar
Date posted: September 13, 2021. Answers (1)
- Discuss three types of culture media in a lab(Solved)
Discuss three types of culture media in a lab
Date posted: September 13, 2021. Answers (1)
- Describe the colonial morphology of bacteria(Solved)
Describe the colonial morphology of bacteria
Date posted: September 13, 2021. Answers (1)
- List three acceptable identifiers of a lab specimen(Solved)
List three acceptable identifiers of a lab specimen
Date posted: September 13, 2021. Answers (1)
- Factors to consider when collecting specimen(Solved)
Factors to consider when collecting specimen
Date posted: September 13, 2021. Answers (1)
- Describe four types of microorganisms stating their characteristics(Solved)
Describe four types of microorganisms stating their characteristics
Date posted: September 13, 2021. Answers (1)
- Discuss three modes of Paper Chromatography (Solved)
Discuss three modes of Paper Chromatography
Date posted: September 13, 2021. Answers (1)
- List four uses and applications of Paper Chromatography (Solved)
List four uses and applications of Paper Chromatography
Date posted: September 13, 2021. Answers (1)
- Discuss five classification of enzymes(Solved)
Discuss five classification of enzymes
Date posted: September 13, 2021. Answers (1)
- Describe how enzymes work(Solved)
Describe how enzymes work
Date posted: September 13, 2021. Answers (1)
- List four characteristics of enzymes(Solved)
List four characteristics of enzymes
Date posted: September 13, 2021. Answers (1)