NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Unicellular organisms include bacteria, some algae, and some animals. They live in virtually every environment on the planet. Which of the following statements BEST describes the ratio of unicellular animals to multi-cellular animals?
A
Multicellular organisms outnumber unicellular organisms only in terrestrial environments
B
Unicellular and multicellular organisms exist in about the same number in both aquatic and terrestrial environments
C
Unicellular organisms outnumber multicellular organisms in both aquatic and terrestrial environments.
D
Multicellular organisms outnumber unicellular organisms only in aquatic environments.
Explanation: 

Detailed explanation-1: -These are called unicellular organisms. Although much smaller, unicellular organisms can perform some of the same complex activities as multicellular organisms. Many unicellular organisms live in extreme environments, such as hot springs, thermal ocean vents, polar ice, and frozen tundra.

Detailed explanation-2: -When all the vital functions which are necessary for life are performed by a single cell then such cell is called the unicellular organism. Some examples of unicellular organisms are Amoeba, Paramecium etc.

Detailed explanation-3: -Unicellular organisms include bacteria, protists, and yeast.

There is 1 question to complete.