Uncle Widi's Biology Trivia Quiz

What is the largest species of shark?

• Great white shark

• Hammerhead shark

• Whale shark

• Tiger shark

Answer explanation

The whale shark is a slow-moving, filter-feeding carpet shark and the largest known extant fish species. The largest confirmed individual had a length of 18.8 m.

Which bird is famous for its long-distance migration, with a route that spans across continents?

• Bald eagle

• Pigeon

• Hummingbird

• Arctic tern

Answer explanation

The Arctic tern is a tern in the family Laridae. This bird has a circumpolar breeding distribution covering the Arctic and sub-Arctic regions of Europe, Asia, and North America.

Which insect is known for its ability to produce light through bioluminescence?

• Ladybug

• Firefly

• Ant

• Dragonfly

Answer explanation

Fireflies can transform 95% of energy into light. There is no light source developed by humans for domestic use that can compete with the little bugs.

Which animal has the largest brain relative to its body size?

• Elephant

• Dolphin

• Human

• Chimpanzee

Answer explanation

The brain surface area of a bottlenose dolphin is more than 1,400 square centimeters larger than a human being's. Strong connections between the sensorial and motive areas of a dolphin's brain to the body indicate that it is very much sensitive to pain and stress.

What is the primary function of the kidneys in the human body?

• Regulating body temperature

• Producing red blood cells

• Filtering waste from the blood

• Digesting food

Answer explanation

Kidneys are bean shaped and are around 10-12cm long (about the size of a clenched fist). Kidneys filter around 180 litres of blood every day, control the production of red blood cells and release hormones that regulate your blood pressure. Kidneys also produce urine, by removing waste products from the body.

What is the smallest unit of matter?

• Atom

• Cell

• Molecule

• Electron

Answer explanation

The atom is the basic particle of the chemical elements, and the chemical elements are distinguished from each other by the number of protons that are in their atoms.

Tags

NGSS.MS-PS1-1

What is the largest organ in the human body?

• Liver

• Skin

• Brain

• Heart

Answer explanation

• The average person's skin covers an area of 2 square meters. Skin accounts for about 15% of your body weight.