Option A because autonomic systems are involuntary and unconscious.
The microorganisms was unicellular and had a well - defined nucleus.
Answer:
An individual skeletal muscle may be made up of hundreds, or even thousands, of muscle fibers bundled together and wrapped in a connective tissue covering. Each muscle is surrounded by a connective tissue sheath called the epimysium. Fascia, connective tissue outside the epimysium, surrounds and separates the muscles.
Explanation:
Also, cellular respiration is c6h12o6 + o2 -> h2o + co2 and energy and photosynthesis is backwards of photosynthesis. It’s light energy + co2 + water to make c6h12o6 and o2. So the reactants in cellular respiration are the products in photosynthesis and the products in cellular respiration are the reactants of photosynthesis
No, they don't have organs and organ system.
Cells form tissues, Tissues form organs, Organs forms organ system; Unicellular have their own one cell only. So, it can't possible that they have organs or organ system.
