Class 9 Chapter 6 Tissue

 Class 9 Chapter 6 Tissue

• Q: What is a tissue? A: A tissue is a group of cells that are similar in structure and work together to achieve a particular function.

• Q: What type of tissue is responsible for the growth of plants in specific regions? A: The dividing tissue responsible for growth is known as meristematic tissue.

• Q: Which specific meristematic tissue increases the length of stems and roots? A: The apical meristem, located at the growing tips, increases the length of the stem and root.

• Q: What is the process of differentiation? A: Differentiation is the process by which cells formed by meristematic tissue take up a permanent shape, size, and function, resulting in permanent tissue.

• Q: Which simple permanent plant tissue is primarily responsible for storing food? A: The loosely arranged simple permanent tissue that generally stores food is called parenchyma.

• Q: What gives plants flexibility to bend in parts like tendrils without breaking? A: The permanent tissue called collenchyma allows bending and provides mechanical support.

• Q: Which tissue makes the husk of a coconut hard and stiff? A: The husk of a coconut is made of sclerenchymatous tissue, which consists of dead cells with thickened walls due to lignin.

• Q: What are the small pores in the epidermis of a leaf used for gas exchange called? A: These pores are called stomata, and they are enclosed by kidney-shaped guard cells.

• Q: Which tissues make up the vascular bundle in complex plants? A: Xylem and phloem, both complex permanent tissues, constitute the vascular bundle and act as conducting tissues.

• Q: What is the main function of phloem in plants? A: Phloem transports food from the leaves to other parts of the plant.

• Q: What type of animal tissue is blood? A: Blood is a type of connective tissue with a fluid matrix called plasma.

• Q: Which connective tissues link bones to each other and muscles to bones? A: Ligaments connect bones to bones, while tendons connect muscles to bones.

• Q: Which animal tissue stores fat and acts as an insulator? A: Adipose tissue, found below the skin and between internal organs, stores fat globules.

• Q: What type of muscle controls involuntary movements like the rhythmic contraction of the heart? A: Cardiac muscles control the continuous rhythmic contraction and relaxation of the heart.

• Q: What are the cells of the nervous tissue called? A: The cells highly specialized for receiving and transmitting stimuli are called nerve cells or neurons.