shahzaib hassan BIOLOGY   -   Zoology

What type of symmetry is found in adult echinoderms like sea stars?

Radial symmetry is like cutting a pizza ? you can slice it in several ways and still get equal pieces. Sea stars have this symmetry, where their body parts are arranged around a central axis.
shahzaib hassan BIOLOGY   -   Zoology

Which structure in the bird's digestive system is responsible for grinding food?

The gizzard is like a bird?s version of teeth. Since birds don't have teeth to chew food, the gizzard uses grit and small stones to grind the food into smaller pieces before digestion.
shahzaib hassan BIOLOGY   -   Zoology

What type of reproduction is found in honeybees, where males develop from unfertilized eggs?

Parthenogenesis is like a shortcut in reproduction where no fertilization is needed. In honeybees, males (drones) develop from unfertilized eggs, while females come from fertilized ones.
shahzaib hassan BIOLOGY   -   Zoology

Which of the following animals is considered an example of an endothermic vertebrate?

Endothermic animals are like having their own built-in heaters. Bats, like other mammals, can regulate their own body temperature internally, unlike reptiles which rely on the environment to warm up or cool down.
shahzaib hassan BIOLOGY   -   Zoology

Which of the following is a characteristic of mammals but not of other vertebrates?

Mammary glands are like milk factories for mammals. They produce milk to feed newborns, which is a feature unique to mammals, though not all mammals lay eggs (like the platypus).
shahzaib hassan BIOLOGY   -   Zoology

What is the name of the larval stage of a frog?

A tadpole is like a baby frog that hasn't grown legs yet. It starts life with a tail and gills to breathe underwater, but as it grows, it loses its tail and develops legs and lungs to live on land.
shahzaib hassan BIOLOGY   -   Zoology

In insects, which part of the body is primarily responsible for gas exchange?

Insects breathe through tracheae, which are like tiny tubes running through their bodies. Air enters through openings called spiracles and travels through these tubes to deliver oxygen directly to their tissues.
shahzaib hassan BIOLOGY   -   Zoology

Which hormone is secreted by the posterior pituitary gland and controls water balance in mammals?

ADH is like a manager telling the kidneys to save water. It signals the kidneys to reabsorb water and decrease urine output when the body needs to conserve water, helping maintain the water balance.
shahzaib hassan BIOLOGY   -   Zoology

What is the primary function of nephridia in annelids?

Nephridia are like little filters for an annelid?s body, similar to kidneys in humans. They remove waste from the animal?s body by filtering the body fluid and excreting waste outside.
shahzaib hassan BIOLOGY   -   Zoology

Which of the following animal groups exhibits a closed circulatory system?

A closed circulatory system is like a highway with only certain entry and exit points for blood. In annelids, blood flows through vessels, unlike arthropods and mollusks that have an open system where blood washes over organs.

BIOLOGY