Test: Excretion - Class 10 MCQ

Filtering unit of kidney is nephron. Platelets are present in the muscle part only and not in the initial filtrate .

Through PCT, glucose is reabsorbed in tubular part of nephron.

Each organ of plant exchange gases:

• Leaves exchange gases by stomata
• Roots through the diffusion of gases present in the soil
• Plants with green stem exchange gases through stomata present on their stem
• Those plants that didn't have green stems or stomata on their stem exchange gases through lenticels.

The plants secrete many materials as the by-products of reactions and metabolic processes:

• Sometimes these are stored in old and aging tissues like the xylem
  Example: Resins, and gums
• Latex is a yellowish, brown-colored liquid that is an emulsion and used in wound healing. It is secreted from the plants.

Thus, option C is correct.

Bowman’s capsule is a cup-shaped structure that contains a tuft of capillaries that help in the filtration of blood.