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Q. What is gastrulation? How during gastrulation are the first two germ layers formed? What are these germ layers?
Gastrulation is the process through which a portion of the blastula wall undergoes invagination inside the blastocele, forming a tube known archenteron (primitive intestine). The cells of the inner side of the tube form the cells of the outer side and the endoderm (germ layer) form the ectoderm (another germ layer). It is the start of the tissue differentiation in embryonic development.
Exudate gums Most exudates gums come from compounds produced when the plant is wounded and these substances seal the wound. Most widely used exudate gum is 'gum Arabic' exuded
what normally cause type one sugar diabetes
Explain briefly about Foams Consider the following example. Take some liquid in a glass and agitate or shake it vigorously. What do you observe at the top of the liquid. Yes,
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Pregnancy toxaemia in sheep (twin lamb disease, sleeping ewes disease, pregnancy ketosis). Pregnancy toxaemia is a multifactor disorder of energy metabolism affecting sheep du
Electro magnetic radiation Light is one form of energy. The light rays consist of tiny particles called photons. The energy carried by photon is called quantum. Light
What is the main function of chloroplasts? Ans) Chloroplasts are organelles represent in the cytoplasm of plant and algae cells. Similarly mitochondria, chloroplasts have two bo
Q. How to Use a Key? The use of a key is analogous to travelling a high way, that forks repeatedly, each fork having roadside directions. If a traveller follows the proper dire
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