NEET Biology question
Not in NEET syllabus
Choose the true and false statements from the following.
I. Mycorrhizal association between a fungus and the root of a plant (*Pinus*) is often obligate. II. *Pinus* and orchid seeds can germinate and grow into a plant in the absence of mycorrhizal association. III. Absorption of water along with mineral solute by root hairs is purely a process of diffusion. IV. In the apoplast pathway, movement of water takes place through the cell wall and intercellular spaces. V. Fungal hyphae provide sugar and organic material to the root.
Solution
I is true — many conifer (e.g. *Pinus*) mycorrhizal associations are obligate for normal growth. IV is true — this is the standard definition of the apoplast pathway. II is false — *Pinus* and orchid seeds typically fail to germinate/establish without their mycorrhizal fungal partner. III
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