10. Which of the following statement(s) is
(are) correct?
Statement 1: Unicellular organisms can live independently.
Statement 2:Amoeba engulfs its food by endocytosis.
Statement 3: Prokaryotic cells do not have a well-defined nuclear region.
O (a) Statement 1
O
(b) Statement 2
0 (c) Statement 2 and 3
O (d) Statement 1, 2 and 3
Answers
Answer:
(d) Statement 1, 2 & 3
Explanation:
1) According to the Cell theory, any unicellular organism is capable of independent existence.
2) Endocytosis is the process of intake of soluble(liquified) food in form of vesicles.
It is achieved in Amoeba by Pseudopodia formation..
3) Pro(primitive) , karyote (nucleus).
Prokaryote organisms lack nuclear membrane but still the genetic material is compact due to protein called Polyamine and is termed as Nucleoid .
Answer:
(d) Statement 1,2 and 3
Explanation:-
Statement 1:
Amoeba is a single celled organism That can perform everything a living organism needs to. It can take its own food, respire, reproduce etc. Hence, it is not dependent on anyone and can live independently. so, It can be also called a complete organism.
Statement 2:
Endocytosis is a process by which amoeba engulfs its food. Amoeba has a flexible membrane and finger-like projections called pseudopodia.
Statement 3:
In prokaryotic cells, nucleus is not defined properly because, it is not surrounded by nuclear membrane, with inner nucleoplasm and chromatin material. So, it is poorly defined and it's called nucleoid or gonophore.