1. How do unicellular organisms
perform excretion?
2. How are the excretion in
multicellular organisms
different from unicellular
organisms?
3. What is the functional unit of
kidney?
4. The process of ultrafiltration is
essential in urine formation,
where does this step occur in
nephron?
5. Draw a labelled diagram of
excretory system of human
being.
Answers
Answer:
1.) Many unicellular organisms such as Amoeba excrete their waste products by diffusion from their body surface as they are small in size. Multicellular organisms such as Hydra carry out water excretion by creating a break in its body wall which is a result of strong contraction when its gut is distended with fluid.
2.) Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.
3.) Together, the renal cortex and renal pyramids constitute the functional portion or of the kidney. Within the parenchyma are about 1 million microscopic structures called , which are the functional units of the kidney.
4.) In renal physiology, ultrafiltration occurs at the barrier between the blood and the filtrate in the glomerular capsule (Bowman's capsule) in the kidneys. ... Blood flows into these capillaries through the afferent arterioles and leaves through the efferent arterioles.
Explanation:
I hope it helps
Ans1.The unicellular organism remove their wastes directly through the cell membrane by the process of diffusion. Diffusion occurs when particles spread. They move from a region where they are in high concentration to a region where they are in low concentration.
Ans2.Many unicellular organisms such as Amoeba excrete their waste products by diffusion from their body surface as they are small in size. Multicellular organisms such as Hydra carry out water excretion by creating a break in its body wall which is a result of strong contraction when its gut is distended with fluid.
Ans3.Together, the renal cortex and renal pyramids constitute the functional portion or of the kidney. Within the parenchyma are about 1 million microscopic structures called , which are the functional units of the kidney. The number of nephrons is constant from birth, and injured or diseased nephrons cannot be replaced.
Ans4.In renal physiology, ultrafiltration occurs at the barrier between the blood and the filtrate in the glomerular capsule (Bowman's capsule) in the kidneys. ... Blood flows into these capillaries through the afferent arterioles and leaves through the efferent arterioles.
Ans5. in the pictures.
Hope this helps... Thank you...
