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How do Organisms Reproduce?
State the changes that take place in the uterus when :
Female gamete/egg is not fertilised
If the egg is not fertilised, it lives for about one day. Since the thickened uterus lining is no more required, it will slowly break down and comes out through the vagina as blood and mucous known as menstruation.
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A student while observing an embryo of a gram seed listed various parts of the embryo as listed below :
Testa, Micropyle, Cotyledon, Tegmen, Plumule, Radicle. On examining the list the teacher commented that only three parts are correct. Select these three correct parts :
Name the type of asexual reproduction in which two individuals are formed from a single parent and the parental identity is lost. Write the first step from where such a type of reproduction begins. Draw first two stages of this reproduction.
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival - the one reproducing asexually or the one reproducing sexually ? Give a reason to justify your answer.
(a) Write the function of following parts in the human female reproductive system :
(i) Ovary (ii) Oviduct (iii) Uterus
(b) (a) Write the function of following parts in the human female reproductive system :
(i) Ovary (ii) Oviduct (iii) Uterus
(b) Describe in brief the structure and function of the placenta
Name the process by which an amoeba reproduces. Draw the various stages of its reproduction in a proper sequence
A student is viewing under a microscope a permanent slide showing various stages of asexual reproduction by budding in yeast. Draw diagrams of what he observes. (in proper sequence)
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