Q1. Give the functions of the following tissues: (a) Apical meristem (b) Collenchyma (c) Cardiac muscles (d) Xylem (e) Squamous epithelium
Answers
b)COLLENCHYMA- It provides structural support to growing stems and leaves.
c)CARDIAC MUSCLES- Causes the rhythmic movement of the heart resulting in circulation of blood in the body.
d)XYLEM- it is a water conducting tissue of plant.
e)SQUAMOUS EPITHELIUM- it provides protection and prevent the entry of germs.
1. The apical meristem, also known as the “growing tip,” is an undifferentiated meristematic tissue found in the buds and growing tips of roots in plants. Its main function is to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.
2.The thickened walls of the collenchyma cells enable them to provide additional support to the areas where they are found. Most notably, collenchyma cells serve growing parts of the plant, such as shoots and leaves, both by providing support and by filling in vacant spaces that will be used for later growth.
3.The cardiac muscle has only one job, but it is a very important one; its job is to pump blood through the miles of blood vessels in your body. If the cardiac muscle stops, you stop. It's a good thing you don't have to consciously think about contracting your heart muscle.
4. Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to shoots and leaves, but it also transports some nutrients.
5. They forms a barrier between the body and the exterior environment. Simple squamous epithelial cells(glomerulus) in nephrons of kidneys enable rapid filtration of blood and diffusion of small molecules. Squamous epithelial cells of lungs (alveoli of lungs) helps to reduce friction and controls vessel permeability.