Question

Answer the following questions :

1. Differentiate between meristematic tissue and permanent tissue .

2. Describe the functions of conducting tissues in plants .

3. Draw a neat labelled diagram of neuron or nerve cell .

4. Name any two types of muscular tissue .

5. State three functions of epithelial tissue .

6. Define : i ) Chlorenchyma ii ) Aerenchyma​

Answer 1

1. Meristematic tissue always has a prominent nucleus. Permanent tissue has a prominent nucleus in some like parenchyma while not in others like sclerenchyma. ... Meristematic tissue has cells small in size and isodiametric in shape. Permanent tissue has cells large in size and their shape varies.

2.Vascular tissue transports water, minerals, and sugars to different parts of the plant. Vascular tissue is made of two specialized conducting tissues: xylem and phloem. Xylem tissue transports water and nutrients from the roots to different parts of the plant, and also plays a role in structural support in the stem.

4.The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control.

5.Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

6.Chlorenchyma are parenchyma cells present in the mesophyll cells of the leaves which possess Chloroplast and hence the name. Aerenchyma are the parenchyma cells present in floating water plants which have air vacuoles that give them buoyancy and help them float.