shahzaib hassan BIOLOGY   -   Zoology

What is the function of chromatophores in cephalopods like octopuses?

Chromatophores are like color-changing paint in an octopus?s skin. These specialized cells allow them to change color to blend into their surroundings or communicate with other animals.
shahzaib hassan BIOLOGY   -   Zoology

What is the term for animals that give birth to live young rather than laying eggs?

Viviparous animals are like mammals that keep their babies inside their bodies until they're ready to be born, unlike oviparous animals which lay eggs. The young develop inside the mother's body.
shahzaib hassan BIOLOGY   -   Zoology

Which of the following structures is unique to the respiratory system of birds?

Air sacs are like extra balloons in a bird?s respiratory system that help them breathe more efficiently. They allow for a continuous flow of air through the lungs, providing more oxygen during both inhalation and exhalation.
shahzaib hassan BIOLOGY   -   Zoology

What is the major excretory product in aquatic animals like fish?

Ammonia is like a very toxic waste that aquatic animals can easily get rid of because they live in water. Since it?s highly toxic, these animals need lots of water to dilute and excrete it safely.
shahzaib hassan BIOLOGY   -   Zoology

In which group of animals is external fertilization most common?

External fertilization is like casting a net in the water. Amphibians, like frogs, release eggs and sperm into water, where fertilization happens outside their bodies, unlike mammals or reptiles which have internal fertilization.
shahzaib hassan BIOLOGY   -   Zoology

What is the primary function of hemolymph in arthropods?

Hemolymph is like the blood in arthropods, but instead of carrying oxygen, it mainly transports nutrients and waste throughout the body. Arthropods don't rely on hemolymph for oxygen transport because they breathe through tracheae.
shahzaib hassan BIOLOGY   -   Zoology

In mammals, what is the primary function of the diaphragm?

The diaphragm is like a pump that helps air move in and out of the lungs. When it contracts, it pulls air into the lungs, and when it relaxes, air is pushed out. It's essential for breathing.
shahzaib hassan BIOLOGY   -   Zoology

Which of the following classes of animals contains members with a cartilaginous skeleton?

Chondrichthyes, like sharks and rays, have skeletons made of cartilage instead of bone. Cartilage is lighter and more flexible, allowing them to swim efficiently in the water.
shahzaib hassan BIOLOGY   -   Zoology

Which of the following organ systems do echinoderms use for locomotion?

The water vascular system is like a hydraulic system for echinoderms. It uses water to move tube feet, allowing animals like sea stars to walk and grasp things.
shahzaib hassan BIOLOGY   -   Zoology

What is the main nitrogenous waste excreted by birds and reptiles?

Uric acid is like a dry waste package. Birds and reptiles convert nitrogenous waste into uric acid, which is less toxic and requires very little water to excrete, unlike mammals that excrete urea.

BIOLOGY