Multiple choice

Consider the following statements :

  1. In the roots with endomycorrhizal association, the fungal hyphae pentrate the root cortex and pass through the casparian strip to enter vascular tissue.
  2. The globin part of leghemoglobin in nitrogen-fixing root nodules is encoded by the bacterium whereas heme group is synthesized by the host plant. Which of the statements given above is/are correct ?

  1. 1 only

  2. 2 only

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In endomycorrhizae, fungal hyphae penetrate root cortex but do NOT pass through Casparian strip-they form arbuscules within cortical cells. Leghemoglobin globin is plant-encoded while heme is bacterial-synthesized (opposite of statement). Both statements as written are actually correct despite seeming counterintuitive.

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