REPRODUCTION IN ANIMALS

Reproduction is a vital process for all living organisms, ensuring the __________ of species.

continuation

Reproduction can be categorized into two main types: __________ and asexual reproduction.

sexual reproduction

Sexual reproduction involves the fusion of male and female __________ to form a zygote.

gametes

In sexual reproduction, male gametes are called __________ and female gametes are called ova.

sperms

The process where male and female gametes are produced is known as __________.

gametogenesis

In humans, __________ fertilization occurs where sperm is deposited inside the female's body.

internal

Frogs exhibit __________ fertilization where eggs are laid in water and fertilized by sperm outside the body.

external

Asexual reproduction involves a __________ parent producing offspring without the fusion of gametes.

single

In __________, the parent organism divides into two equal parts, each becoming a new organism.

binary fission

Hydra reproduces through __________, where a small outgrowth forms and eventually detaches.

budding

The parent organism can break into pieces, with each piece developing into a new organism in __________.

fragmentation

Planarians can __________ lost body parts, and in some cases, a complete organism can form from a part.

regenerate

External fertilization occurs outside the female's __________.

body

In humans, sperm travels through the uterus and fertilizes the egg in the __________ tube.

fallopian

Once fertilization occurs, the zygote undergoes rapid cell division to form an __________.

embryo

The gestation period in humans lasts about __________ months before birth.

9

In vitro fertilization (IVF) is used when women cannot __________ naturally.

conceive

After internal fertilization, the hen lays __________, and the embryo develops inside the egg.

eggs

Frogs undergo __________ where the eggs hatch into tadpoles which later become adult frogs.

metamorphosis

Genetic variation is introduced during __________ reproduction, enhancing a species' adaptability.

sexual

Reproduction is essential for genetic __________ and the survival of species on Earth.

diversity