Which of the followings is/are symbiotic associations between autotrophic and heterotrophic organisms only?
(A) Mycorrhiza between fungi and roots of higher plants.
(B) Lichen between phycobiont and mycobiont.
(C) Coralloid roots of Cycas have cyanobacteria.
(D) Obligate association between Pinus roots and fungi making mycorrhizae.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

A and B only

A, B and C only

A, B and D only

B and C only

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Autotrophs examples are plants and cyanobacteria. A heterotroph example is fungi. Hence, the association between coralloid roots of Cycas and cyanobacteria is not considered as an association between autotroph and heterotroph as both are autotrophs.

Watch 3-min video & get full concept clarity

hear from our champions

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET