alleryStart learning →The roots of orchids that allow the plant to grow on another plant develop what?
AA thick starchy cortex for storage
BA hardened cap for splitting the bark
CA spongy tissue that absorbs moisture
DA dense sheath of nitrogen fixing cells
Answer & Solution
Correct answer: C. A spongy tissue that absorbs moisture
1. Epiphytic roots let a plant grow on another plant.
2. In orchids these roots develop a spongy tissue that absorbs moisture.
3. That tissue is the adaptation being asked about, since an epiphyte has no soil to draw on.
4. Nitrogen fixing sheaths belong to root nodules of legumes, so that option imports a different adaptation.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.3 Roots_
Keep practising Plant Form and Physiology
Browse all Plant Form and Physiology questions for ICAR JRF, or explore more Plant Sciences topics.
Related questions
Which defence compound of the cassava root becomes toxic only after a herbivore eats it?A tree exposed to constant strong wind shows which developmental response?Jasmonates elicit the synthesis of volatile compounds that attract which agents?In ripening fruit, ethylene stimulates which conversion?Low soil moisture raises the level of abscisic acid, which then does what?Gibberellins are described as a group of about how many closely related hormones?The effect of cytokinins was first reported after adding what to plant embryos in culture?Which is the only naturally occurring auxin that shows physiological activity?