Question

Which one of the following is the correct structural organization of any animal?

• A. Tissues → Organs → Systems → Cells
• B. Cells → Tissues → Organs → Systems
• C. Cells → Organs → Systems → Tissues
• D. Systems → Organs → Cells → Tissues

Hint:

In biological systems, cells form tissues, tissues form organs, and organs make up systems.

Answer 1

The Correct Option is B

Step 1: Understanding the structural organization.
The correct organization in animals starts at the cellular level, where cells group together to form tissues. Tissues then form organs, which in turn make up organ systems.
Step 2: Analyzing the options.
(A) Tissues → Organs → Systems → Cells: Incorrect. This option presents the organization in the wrong order.
(B) Cells → Tissues → Organs → Systems: Correct. This is the proper hierarchy of biological organization in animals.
(C) Cells → Organs → Systems → Tissues: Incorrect. This sequence is not correct, as tissues precede organs.
(D) Systems → Organs → Cells → Tissues: Incorrect. This sequence is entirely incorrect as it does not follow the biological hierarchy.
Step 3: Conclusion.
The correct answer is (B) Cells → Tissues → Organs → Systems.