Question

Assertion : The embryo which is capable to germinate should have well-developed radicle plumule and one or two cotyledons.
Reason : In the Orobanchaceae and Orchidaceae the embryo never differentiates a true radicle, plumule and cotyledons, but can germinate.

• A. Both assertion and reason are true and reason is a correct explanation of the assertion.
• B. Both assertion and reason are true but reason is not a correct explanation of the assertion.
• C. Assertion is true but Reason is false
• D. Both Assertion and Reason are false
• E. Assertion is false but Reason is true

Answer 1

The correct option is B Both assertion and reason are true but reason is not a correct explanation of the assertion.

Irrespective of its mode of development a mature embryo generally possesses an embryonic root (radicle) an embryonic shoot (plumule) and one or two cotyledons. However, some groups of plants are characterised by the presence of reduced embryos, lacking the differentiation of these organs, for example, the plants of Balanophoraceae,Orchidaceae, Orobanchaceae.