A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is

A commensalism
B amensalism
C ectoparasitism
D symbiosis.

Verified Solution

Answer & Solution

Correct Answer

(D) symbiosis.

Step-by-step Solution

Detailed explanation

(d) : Sea anemone gets associated to the shell of hermit crab. It provides camouflage and protection to the crab due to presence of stinging cells in sea anemone. In turn, sea anemone is transported to new places reaching new food sources. This is symbiosis as both the organisms are benefitted.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Given below are two statements : one is labelled as Assertion (A), and the other is labelled as Reason (R).
Assertion (A) : The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.
Reason (R) : Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.
In the light of the above statements, choose the correct answer from the options given below :

NEET 2025 Easy

Match the hominids with their correct brain size

\((a)\) Homo habilis	\((i)\) \(900\; \mathrm{cc}\)
\((b)\) Homo neanderthalensis	\((ii)\) \(1350\; \mathrm{cc}\)
\((c)\) Homo erectus	\((iii)\) \(650-800\; \mathrm{cc}\)
\((d)\) Homo sapiens	\((iv)\) \(1400\; \mathrm{cc}\)

Select the correct option. \((a)\quad (b)\quad (c)\quad (d)\)

NEET 2019 Easy

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