Question

1. Write two examples for each of the following.
1. Blood cells
2. Body wastes in humans
3. Constituents of urine
4. Products excreted by plants
5. Form of toxic waste in plants​

Answer 1

Answer:

Blood cells. Blood contains many types of cells: white blood cells (monocytes, lymphocytes, neutrophils, eosinophils, basophils, and macrophages), red blood cells (erythrocytes), and platelets. Blood circulates through the body in the arteries and veins.

body waste in human : sweat and urine

Urine is an aqueous solution of greater than 95% water. Other constituents include urea, chloride, sodium, potassium, creatinine and other dissolved ions, and inorganic and organic compounds. Urea is a non-toxic molecule made of toxic ammonia and carbon dioxide.

4. Carbon dioxide, excess water produced during respiration and nitrogenous compounds produced during protein metabolism are the major excretory products in plants. Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration.

Answer 2

Answer:

Blood cells - Red blood cells, White blood cells.

Body wastes in humans - sweat , tears

Constituents of urine - uric acid, minerals

Products excreted by plants - carbon dioxide, oxygen

Form of toxic waste in plants - gums, resins

Explanation:

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