Match the columns :
1. Haemoglobin
2. Kidney
3. Valve
4. WBC
(a) Excretion
(b) Leukocyte
(c) Blood
(d) AB
(e) Heart
5. Blood group
Answers
Answer:
Phloem conducts food made in the leaves to all other parts of the plant. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibers, and phloem parenchyma cells.
The nephron is the functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.
In the circulatory system, veins are the blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart.
Platelets, also called thrombocytes, are blood cells whose function (along with the coagulation factors) is to stop bleeding. Platelets have no nucleus, they are fragments of cytoplasm which are derived from the megakaryocytes of the bone marrow and then enter the circulation.
Hence, the correct answer is 'A- 2, B- 1, C- 4, D- 3'.