SUBJECTIVE TYPE A. Very Short Answers Type Questions 1. What happens to the useful substances which flow into nephridia along with the waste ? 2. Name the excretory unit of a kidney. 3. Where is urine carried through the ureters ? 4. What is urethra ? 74 ICSE SCIENCE :: BIOLOGY - VII
Answers
Answer:
The body of nephridia also absorbs some wastes. However, the useful substances are reabsorbed and the passing out waste remains concentrated for various nitrogenous compounds. The excreted waste substances are removed out from the body with faeces.
Nephron or uriniferous tubule is the excretory unit in the kidney. The process of removal of toxic waste from the body of an organism is called excretion. ... The main functions of Nephron include filtration of blood, reabsorption and secretion.
Urea, together with water and other waste substances, forms the urine as it passes through the nephrons and down the renal tubules of the kidney. Two ureters. These narrow tubes carry urine from the kidneys to the bladder.
Answer:
What happens to the useful substances which flow into nephridia along with the waste ?
Answer ➡️ Nephridia excrete these substances from the body of earthworm. However, the useful substances are reabsorbed and the passing out waste remains concentrated for various nitrogenous compounds. The excreted waste substances are removed out from the body with faeces.
Name the excretory unit of a kidney ?
Answer ➡️There are millions of microscopic tubes called uriniferous(renal) tubules of nephrons and it is the excretory unit of the kidney
