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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".
LIGHT MICROSCOPY (LM) A study of the structure of organisms is an essential requirement of biology. However, unaided human eye cannot see objects smaller than 0.1 mrn(100 p) in d
Define the term- Ultrafiltration Ultrafiltration occurs when the flow of a substance across a cell membrane is increased by a hydrostatic pressure. This process was initially b
Explain Procedure for nelson somogyi method for glucose estimation? Carry out the procedure following the steps enumerated herewith: 1. Label a series of Folins tubes as bl
Generalised Seizures Generalised seizures are bilaterally symmetrical without focal onset. One subtype, the grand mal attack, is characterised by loss of consciousness and by s
What are the benefits of high-throughput expression analysis in molecular biological investigations? Ans) These methods permits simultaneous analysis of the expression of a lot
Vitamin A (Retinol) Purified vitamin A is a viscous yellowish oil. It is freely soluble in most organic solvents such as methanol, ether, acetone, chloroform and petroleum ethe
Glucometer mainly for the following purpose. (i) In acute and chronic care facilities at the patient's bedside, in clinics or hospitals. (ii) In physician's clinics. (iii
Define water losses by Insensible perspiration? Insensible perspiration accounts for a relatively constant amount of water loss that is proportional to the surface area of the
Which type of chemical bond maintains the pairing of each chain in the DNA molecule? To produce the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds
Explain Chemical Structure of saponins? Let us briefly understand their chemical nature. Their structures are characterized by the presence of a steroid or triterpene group, i.
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