Yes your ugly hoped this helped
<span>a. Acoelomates. Flatworm is a type of acoelomate animal; they have no body cavity or ceolom but they have </span>mesenchyme in their body cavity that surrounds the gut and organs in one solid body.
Answer:
The correct options are: stomach, mouth, eyes, skin
Explanation:
Eyes: Our tears contain an enzyme which is beneficial in breaking down the cell wall of many bacteria's.The blinking of the eye also stops many bacteria's o enter into the eye.
Skin: The skin of a person acts as a barrier between any foreign pathogen and the body of a person. The hair present on the skin tend to trap many microorganisms and prevent them from entering into the body.
Mouth: Our mouth produces saliva which has many enzymes to kill pathogens in food.
Stomach: The stomach acids tend to kill any pathogens which enter through swallowing.
Different soil, location can be a factor, the amount of sun, wild and domesticated can vary
Answer:
option a. streak, pour
Explanation:
The best method to isolate single bacterial colonies is the "streak-plating" method.
The "streak-plate" procedure is used to isolate pure cultures of bacteria or also colonies, from mixed populations by mechanical separation. Millions of cells form a colony, they grow in a cluster on an agar plate. With this method, a mixture of cells is spread over the surface of a agar-based nutrient in a petri dish, that makes that less bacterial cells are deposited at widely separated point on the surface and, after incubation, they develop into colonies.
On the other hand, the best method to count colonies is the pour plate method. It helps to enumerate bacterial cells in a mixed sample, often used to count the number of microorganisms in those samples, which are added to a molten agar medium before its solidification occur. The result is colonies uniformly distributed throughout the solid medium when the appropriate sample dilution is plated.
