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Questions and Answers
What is the process called when a nymph sheds its skin several times during development?
What are the two layers found within a bird's egg?
Which stage comes after the hatching of a bird from the egg?
What is the term for the changes an insect undergoes from being a baby to an adult?
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Why do birds sit on their eggs?
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What characteristic is common to mammals?
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Which of the following animals is NOT classified as a mammal?
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What is the role of the mother mammal after giving birth?
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Which of the following are marsupials?
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In some mammals, which parent may help care for the young?
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Study Notes
Insects
- Insects reproduce by laying eggs.
- After hatching, baby insects undergo metamorphosis (changing of structure).
- Cockroaches and grasshoppers lay eggs that hatch into nymphs.
- Nymphs resemble adult insects but are smaller and lack wings.
- Nymphs undergo moulting (shedding their skin) several times during development.
Birds
- Birds reproduce by laying eggs.
- Eggs have a hard shell for protection. Inside the shell are albumen (white) and yolk (yellow).
- The yolk provides food for the growing embryo.
- The albumen protects the developing embryo.
- The chalaza holds the yolk in place.
- Birds incubate their eggs by sitting on them to keep them warm.
- After a period of incubation, the shell breaks, and the baby bird hatches.
- Newborn birds are often featherless and require feeding until they develop enough to fly and find food.
Life Cycle
- The various stages a living thing goes through from birth to adulthood is known as its life cycle.
Mammals
- Mammals give birth to live young.
- Mammals have hair or fur.
- Mammals produce milk to feed their young.
- Examples of mammals include dogs, cats, monkeys, tigers, cows, humans, whales, dolphins, and bats.
- Mammals care for their young after birth.
- Young mammals develop inside their mother's body.
- Mothers usually feed, clean, keep warm, and protect their young.
- Parents teach their young how to survive independently.
- Some mammals have pouches for carrying their young.
- These mammals are called marsupials.
- Examples of marsupials include kangaroos, koalas, wallabies, wombats, and opossums.
Marsupials
- Marsupials are mammals.
- Marsupials have a pouch.
- Mothers usually care for their young in the pouches.
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Description
Explore the fascinating life cycles of insects and birds through this quiz. Learn how different species reproduce, hatch, and undergo various developmental stages. Test your knowledge on metamorphosis in insects and the incubation process in birds.
