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How do birds reproduce?
Birds, like each vertebrate, have sexual reproduction. Their embryos develop within shelled eggs having extraembryonic membranes and outside the mother's body.
Birds copulate. Fecundation is internal and it happens only before the female gamete is included by the calcareous eggshell.
Locomotion All animals, simple or complex, are able of performing necessary bodily functions. One of these functions is Locomotion. Motility is one of the characteristics and
Q. Of what substances is the nucleolus made? Is there a membrane around the nucleolus? Nucleolus is a region within the nucleus made of proteins and ribosomal RNA (rRNA). It is
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Explain about the Observation and Classification of Arthropoda? Introduction In the previous unit you have examined the representatives of artliropoda. In this unit, you wi
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What types of individuals in a population are represented by the two ends of a bell curve?
State the term in detail hydrostatic skeleton. Formed from a fluid-filled and closed cavity surrounded by a body wall comprising muscles oriented in different directions. Muscu
Define Nutritional Requirements of Fats and Oils? As with the other macronutrients, we do compute requirements of visible fats too for all age groups and give guidelines for se
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