Reproduction in animals

What are male reproductive organs in humans?

• Ovaries, fallopian tubes, and uterus.

• Testes, sperm ducts, and penis.

• Prostate, seminal vesicles, and cervix.

• Testes, ovaries, and vagina.

What is the function of testes?

• To produce male gametes called sperms.

• To produce female gametes called eggs.

• To regulate hormone levels in females.

• To filter blood in the kidneys.

What are oviparous animals?

• Animals that give live birth, e.g., humans, dogs.

• Animals that lay eggs, e.g., hen, frog.

• Animals that can fly, e.g., birds, bats.

• Animals that are warm-blooded, e.g., mammals, birds.

Where does the embryo get embedded?

• In the wall of the uterus, where it develops into a foetus.

• In the fallopian tubes, where it begins to grow.

• In the ovaries, where it is fertilized.

• In the abdominal cavity, where it can cause complications.

Why do frogs lay hundreds of eggs?

• To ensure that some eggs are fertilised and survive despite predators or water currents.

• To increase the chances of finding a mate.

• To provide food for other animals in the ecosystem.

• Because they have a high reproductive rate and need to lay many eggs.

Do human beings undergo metamorphosis?

• Yes, they undergo drastic changes.

• No. Humans develop gradually; no drastic change occurs.

• Only during childhood.

• Yes, but only in certain conditions.

What is IVF (in vitro fertilisation)?

• Fertilisation carried out outside the body, in a lab.

• Fertilisation that occurs naturally within the body.

• A method of artificial insemination using donor sperm.

• A surgical procedure to remove eggs from the ovaries.

What is metamorphosis?

• A gradual change in color during development.

• A drastic change in form during development from larva to adult.

• A process of aging in living organisms.

• A type of cellular division in organisms.

Why is sperm tail important?

• It helps the sperm swim towards the egg for fertilisation.

• It provides nutrients to the sperm.

• It protects the sperm from the female immune system.

• It helps the sperm to attach to the egg.

Why is the term ‘test tube baby’ misleading?

• Because the baby is grown entirely in a test tube.

• Because the fertilization occurs inside the mother's body.

• Because the baby is not grown in a test tube—only fertilisation happens outside.

• Because the term refers to babies born from artificial insemination.