Question

Which of the following is the incorrect statement?
i. Each living cell has the capacity to perform certain basic functions
ii. There is a division of labor in multicellular organisms.
iii. Each kind of cell organelle performs a special function.
iv. All activities inside the cell do not interact with the environment.
(a) (i) And (ii) (b) (ii) and (iii) (c) (iii)and (iv) (d) only (iv)​

Answer 1

The incorrect statement is (d) All activities inside the cell do not interact with the environment.

Explanation:ss

1.Multicellular organisms are made up of millions and trillions of cells. All these cells perform specific functions. All the cells specialised for performing similar functions are grouped together as tissues in the body.

2.Hence, a particular function is carried out by a group of cells at a definite place in the body. Similarly, different functions are carried out by different groups of cells in an organism and this is known as the division of labour in multicellular organisms.

3.Multicellular organisms have a lot of cells so their cells are divided into tissues and then they perform division of labour.

Answer 2

Answer:

(d) only (iv)​ is incorrect.

Explanation:

• The cell is the basic fundamental unit of life, the presence of which makes an organism living. All organisms are composed of cells.

• Each cell can perform certain basic functions of life which are essential for the independent existence of the living organism. Thus statement (i) is correct.

• Multicellular organisms are composed of many cells. All the cells are grouped as tissues which are specialised for performing similar functions in the body.
• Hence a specific function is carried out by a group of cells at a definite place in the body. Different functions are carried out by different groups of cells in an organism and this is called the division of labour. Thus statement (ii) is correct.

• The membranes and organelles of the cells play an important role to acquire a structure and performing some basic functions In a multicellular body with higher degrees of differentiation, specialization and division of labour, cells group together to form tissues which make up specific functions of the body.

     Cells→ Tissues→ tissue system→ organ→ organ system→ organisms

• Each organelle performs specific functions. For example, ribosome performs protein synthesis, mitochondria → respiration, Nucleus→ DNA replication etc. Thus statement (iii) is correct.

• All the cellular activities do interact with the environment. This is possible due to the structural components. The cells integrate signals from their external and internal environment into fundamental processes such as growth, proliferation and survival. Thus statement (iv) is correct.

Hence option (d) iv. All activities inside the cell do not interact with the environment is incorrect.