Cardiac muscles are involuntary muscles which show characteristics of both smooth and striated muscles. These muscles occur in the walls of the heart. Functions of Cardiac Muscles • Cardiac muscles contract and relax rapidly, rhythmically and tirelessly throughout life. They contract endlessly fromRead more
Cardiac muscles are involuntary muscles which show characteristics of both smooth and striated muscles. These muscles occur in the walls of the heart.
Functions of Cardiac Muscles
• Cardiac muscles contract and relax rapidly, rhythmically and tirelessly throughout life. They contract endlessly from early embryonic stage until death.
• The contraction and relaxation of heart muscles help to pump and distribute blood to various parts of body.
The differences between cell walls of parenchyma, collenchyma and sclerenchyma are given in the following table: Parenchyma Collenchyma Sclerenchyma 1. Cell wall is primary 1. Cell wall is primary. 1. Cell wall is secondary. 2. Cells have thin walls and 2. Cell walls are thickened 2. Cell wall is veRead more
The differences between cell walls of parenchyma, collenchyma and sclerenchyma are given in the following table:
Parenchyma Collenchyma Sclerenchyma
1. Cell wall is primary 1. Cell wall is primary. 1. Cell wall is secondary.
2. Cells have thin walls and 2. Cell walls are thickened 2. Cell wall is very thick
made up of cellulose. at the corners due to due to ligni deposition.
protein deposition.
The diffusion of water or solvent through a semi-permeable membrane from a solution of lower concentration of solutes to a solution of higher concentration of solutes, to which the membrane is relatively impermeable, is called osmosis. For more answers visit to website: https://www.tiwariacademy.comRead more
The diffusion of water or solvent through a semi-permeable membrane from a solution of lower concentration of solutes to a solution of higher concentration of solutes, to which the membrane is relatively impermeable, is called osmosis.
Amoeba has flexible cell membrane. It enables amoeba to engulf in food by the process called endocytosis. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
Amoeba has flexible cell membrane. It enables amoeba to engulf in food by the process called endocytosis.
What is the specific function of the cardiac muscle?
Cardiac muscles are involuntary muscles which show characteristics of both smooth and striated muscles. These muscles occur in the walls of the heart. Functions of Cardiac Muscles • Cardiac muscles contract and relax rapidly, rhythmically and tirelessly throughout life. They contract endlessly fromRead more
Cardiac muscles are involuntary muscles which show characteristics of both smooth and striated muscles. These muscles occur in the walls of the heart.
Functions of Cardiac Muscles
• Cardiac muscles contract and relax rapidly, rhythmically and tirelessly throughout life. They contract endlessly from early embryonic stage until death.
• The contraction and relaxation of heart muscles help to pump and distribute blood to various parts of body.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/
Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.
The differences between cell walls of parenchyma, collenchyma and sclerenchyma are given in the following table: Parenchyma Collenchyma Sclerenchyma 1. Cell wall is primary 1. Cell wall is primary. 1. Cell wall is secondary. 2. Cells have thin walls and 2. Cell walls are thickened 2. Cell wall is veRead more
The differences between cell walls of parenchyma, collenchyma and sclerenchyma are given in the following table:
Parenchyma Collenchyma Sclerenchyma
1. Cell wall is primary 1. Cell wall is primary. 1. Cell wall is secondary.
2. Cells have thin walls and 2. Cell walls are thickened 2. Cell wall is very thick
made up of cellulose. at the corners due to due to ligni deposition.
protein deposition.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/
What is osmosis?
The diffusion of water or solvent through a semi-permeable membrane from a solution of lower concentration of solutes to a solution of higher concentration of solutes, to which the membrane is relatively impermeable, is called osmosis. For more answers visit to website: https://www.tiwariacademy.comRead more
The diffusion of water or solvent through a semi-permeable membrane from a solution of lower concentration of solutes to a solution of higher concentration of solutes, to which the membrane is relatively impermeable, is called osmosis.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
How does an Amoeba obtain its food?
Amoeba has flexible cell membrane. It enables amoeba to engulf in food by the process called endocytosis. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
Amoeba has flexible cell membrane. It enables amoeba to engulf in food by the process called endocytosis.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
Where do the lipids and proteins constituting the cell membrane get synthesised?
Rough Endoplasmic Reticulum (RER) - synthesizes proteins constituting cell membrane. Smooth Endoplasmic Reticulum (SER) - synthesizes lipids constituting cell membrane. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
Rough Endoplasmic Reticulum (RER) – synthesizes proteins constituting cell membrane.
Smooth Endoplasmic Reticulum (SER) – synthesizes lipids constituting cell membrane.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/