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Human Reproduction — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Reproduction1 Mark
Question
For two statements are given-one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both assertion and reason are true, and reason is the correct explanation of assertion.
  2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
  3. Assertion is true, but reason is false.
  4. Both assertion and reason are false.
Assertion: In blastulation, cell masses show morphogenetic movements.
Reason: A three layered blastocyst is fanned during blastulation.
✓

Answer

  1. Both assertion and reason are false.

Explanation:

In blastulation cells do not move. A single layered hollow blastocyst is formed.

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