Q. Choose true and false statements from the following I. Mycorrhizal association between fungus and root of plant ($Pinus$) is often obligate II. $Pinus$ and orchid seeds can germinate and grow into plant in absence of mycorrhizal association III. Absorption of water along with mineral solute by root hairs is purely a process of diffusion IV. In apoplast pathway, movement of water takes place through cell wall and intercellular spaces V. Fungal hyphae provide sugar and organic internal to root Choose the correct option
A) I, II and III are true while IV and V are false
B) IV, and V are true while I, II and III are false
C) I and IV are true
D) I, II and V are true
Explanation
Pinus and orchid seeds cannot germinate and develop into plants in the absence of mycorrhizal association. In mycorrihzal association, the fungal hyphae are specialised for absorption of water and minerals by extending sufficient distance into soil. The mycorrhizal association between fungus and roots of plant are obligate. Absorption of water along with mineral is an active absorption and followed by osmosis. Fungus are heterotrophic
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.