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Q. How do birds reproduce?
Birds like every vertebrate have sexual reproduction. Their embryos develop within shelled eggs containing extraembryonic membranes and exterior the mother's body.
Birds copulate. Fecundation is interior and it occurs only before the female gamete is involved by the calcareous eggshell.
What is Muller Manoeuver explain in details? In this manoeuver, patient forcibly inspires while the nose is held closed and mouth firmly sealed for 10 seconds. It exaggerates t
External Respiration: Diffusion of oxygen into blood and carbon dioxide into alveoli (external respiration) is the diffusion of oxygen from air in the alveoli of lungs to bl
It is the preparatory phase. Cell organelle replicate and size of the cell increases. DNA molecule undergoes replication. Each chromosome exists as a pair of chromatids joined toge
What is meant when it is said that a bacteria is an obligate anaerobe? Obligate anaerobes are the living beings that do not survive in the presence of oxygen. For instance, the
Q. Patient care plan for hypertensives? - Lifestyle changes: Avoiding smoking, use of tobacco, and excess alcohol intake Physical activity like walking, 4 times a week or 40 mi
Advantage of solar energy: 1. It is renewable: it produce comes from sun, so it is plentiful and will always be there as long we need it . 2. Solar
Mechanism of Stomatal Opening It has been known for over a century that stomata open because of reversible turgor changes in the guard cells. Stomata open when turgor in the g
What is adaptive radiation? The Adaptive radiation is the appearance of several other species from one common ancestral species that have spread to various regions or environme
Protozoans are microscopic in size however some are large enough to be seen with naked eye. Microscopic organisms such as these have numerous advantages, one of which is that they
Irritability If a bright torch of light is flashed across your eyes, you close your eyes instinctively. The bright light acts as a stimulus (pl, stimuli) and closing your eyes
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