Short answer questions.
1. What are the functions of meristematic tissues?
2. Why are xylem and phloem called conducting tissues?
3. Where are fibres and sclereids found in plants?
4. What is the composition of blood?
5. How are cardiac muscles structurally similar to striated muscles?
Answers
Answer:
1. Meristematic tissues are responsible for plant growth. They are present at the tips of roots,stem and branches. The cells present in these tissues constantly divide to produce new cells.
2.Xylem and Phloem are called conductin tissues as they are involved in the conduction of water and the food. Xylem -conducts water absorbed by the roots to different parts of the plant. Phloem - conducts food prepared in the leaves to various parts of the plant.
3.Sclereids are extremely variable in shape and are present in various tissues of the plant, such as the periderm, cortex, pith, xylem, and phloem. They also occur in leaves and fruits and constitute the hard shell of nuts and the outer hard coat of many… … types of sclerenchyma cells are sclereids and fibres.
4. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues. forming blood clots to prevent excess blood loss.
5. Cardiac muscle tissue is only found in the heart. Highly coordinated contractions of cardiac muscle pump blood into the vessels of the circulatory system. Similar to skeletal muscle, cardiac muscle is striated and organized into sarcomeres, possessing the same banding organization as skeletal muscle ((Figure)).