Which sequence goes from simpler to more complex biological organisation?
Cell → organ → tissue → organelle
Organ system → tissue → cell → organ
Organelle → cell → tissue → organ → organ system
Tissue → cell → organelle → organ
Answer / جواب
Organelle → cell → tissue → organ → organ system
Which substances are secreted by the stomach's epithelial tissue?
Mucus, hydrochloric acid and pepsinogen
Only oxygen
Only glucose
Only insulin
Answer / جواب
Mucus, hydrochloric acid and pepsinogen
Which stomach-wall layer contains blood vessels and nerves supporting the inner tissues?
Nuclear membrane
Lumen contents
Inner connective tissue layer
Surface mucus layer
Answer / جواب
Inner connective tissue layer
Which leaf tissue mainly carries out photosynthesis?
Protective epidermis without chloroplasts
Mesophyll
Phloem
Xylem
Answer / جواب
Mesophyll
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