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In earthworms, when the ovaries mature, the clitellum secretes a viscous substance in the form of a girdle. This girdle hardens in to a cocoon around the clitellum. The ova are discharged into cocoon. When this cocoon moves over the spermathecae openings, the sperms which are already collected from another worm and stored in the spermathecae are discharged into the cocoon. The cocoon finally, comes out of the body and fertilization takes place in the cocoon. As it is taking place outside the body, it is called as "external fertilization".
Subphylum Mandibulata Most of them have three pairs of walking legs, mandibles, compound eyes, antennas, some with wings. There are four classes. Crustacea - aquatic with
Which one of the following has its own DNA? 1. Mitochondria 2. Dictyosome 3. Lysosome 4. Peroxisome Mitochondria
Explain about the Biuret Method? The Biuret reaction was one of first colorimetric assays developed for protein estimation. It is most often used in applications requiring a fa
The major hazards encountered in the biological lab work are diseases like infections and allergies which are caused by handling live animals. dissections, plant and animal tissues
What is commensalism? Commensalism is the ecological interaction in which one individual advantage while the other is neither benefited nor harmed. Commensalism is a harmonious
Define Proteins in the immune system? Proteins such as γ-globulin serve to protect the body against foreign cells. The immunoglobulin produced by lymphocytes is the large polyp
Q. Why are the salt and sugar used in the production of dried fruits and dried meat? Substances that sustain a highly hypertonic environment, like salt and sugar, are used in t
Lipid profile control Evaluation of lipid profile is essential to the management of diabetes and should be performed at initial visit in all patients with diabetes. You have l
How does water move inside sponges? What is the function of the pores in these animals? Sponges are filtering beings. They make water enter their bodies by their lateral pores
Why is it important to study biology? By studying biology, you can create informed decisions on issues that impact you and society, like environmental issues, health, and tech
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