Question

Срочно!Назовите отличия выделительной системе насекомого и десятичного рака

Answer 1

Ответ:

у рака дырка шире

Объяснение:

сам посмотри

Answer 2

Differences between the excretory system of an insect and a decapod crab

The excretory systems of insects and decapod crabs have some key differences. Let's explore them in detail:

1. Structure and Location: - In insects, the excretory system consists of a network of tubules called Malpighian tubules, which are located in the posterior region of the insect's body cavity. - Decapod crabs, on the other hand, have excretory organs called green glands or antennal glands. These glands are located in the head region, near the base of the antennae.

2. Filtration Mechanism: - In insects, the Malpighian tubules filter waste products from the hemolymph (insect blood) and actively transport them into the tubules. The tubules then release the waste into the insect's digestive system for elimination. - Decapod crabs use their green glands to filter waste products from the hemolymph. The glands actively reabsorb useful substances and excrete waste products through a pore located at the base of the antennae.

3. Nitrogenous Waste: - Insects primarily excrete nitrogenous waste in the form of uric acid, which is relatively insoluble and requires less water for elimination. - Decapod crabs excrete nitrogenous waste in the form of ammonia, which is highly soluble in water. This requires the crab to have access to a sufficient water source for waste elimination.

4. Water Conservation: - Insects have evolved an efficient mechanism for water conservation. The Malpighian tubules actively transport ions and waste products while reabsorbing water, allowing insects to conserve water in their arid environments. - Decapod crabs, being aquatic organisms, do not face the same water conservation challenges as insects. They excrete waste products along with water through their green glands, and their aquatic environment provides an abundant water source.

5. Osmoregulation: - Insects regulate their internal osmotic balance by actively transporting ions and waste products through the Malpighian tubules. This helps maintain the proper concentration of ions and water in their body fluids. - Decapod crabs also regulate their internal osmotic balance, but they primarily rely on their gills for this process. The green glands of decapod crabs primarily function in waste excretion rather than osmoregulation.

In summary, the excretory systems of insects and decapod crabs differ in terms of structure, location, filtration mechanism, nitrogenous waste excretion, water conservation, and osmoregulation. These differences reflect the adaptations of each organism to their specific environments and physiological needs.

I hope this information is helpful! Let me know if you have any further questions.