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Science Library Quiz

Life Classification

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: The blastocoele, the space in the centre of the blastula, is replaced during gastrulation by the:

Question 2: Morphogenesis, a change in form in certain animals, is initiated by:

Question 3: The structure that conducts the egg from the ovary to the uterus is the:

Question 4: The structure that does not originate from the mesoderm is the:

Question 5: The mesoderm is an embryonic layer that appears during:

Question 6: Species that reproduce by means of internal fertilization are also characterised by:

Question 7: The periodic partial disintegration and discharge of the uterine lining is called:

Question 8: The maturing human embryo is surrounded by an inner membrane known as the:

Question 9: Most mammalian embryos are attached to the placenta by means of a/an:

Question 10: The process of cleavage terminates in the formation of a hollow ball of cells known as the:

Question 11: During the process of spermatogenesis:

Question 12: The time of the female life cycle at which meiosis II begins is:

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