Which of the following is the adaptation of white blood cells body protection?

Here are the answers to the multiple-choice questions:

12. Which of the following is the adaptation of white blood cells body protection?

• White blood cells, particularly phagocytes, have an irregular shape which allows them to change form and engulf pathogens through phagocytosis.
• The final answer is $\boxed{\text{B}}$

13. Which of the following groups of non-flowering plants has true leaves and proper stems?

• Ferns are non-flowering plants (pteridophytes) that possess true leaves (fronds), stems (rhizomes), and roots.
• The final answer is $\boxed{\text{D}}$

14. Identify part labelled T

• Part