Sexual reproduction
is the production of a new organism from two parents by making use of their sex cells or gametes. The humans, fish, frogs, cats and dogs, all reproduce by the method of sexual reproduction.
Are dogs internal or external fertilization?
Internal fertilization
is when the eggs are kept within the reproductive tract of the female, but when a the males sperm is inserted the egg gets fertilized inside the female. This occurs most often in land-based animals. Examples include worms, cats, dogs, birds, mammals, squid, arthropods, sharks and reptiles.
How does dog reproduce?
Dogs reproduce
through the mating process, where the male mounts the female during copulation, and after fertilization, the female experiences a 63-day gestation period before giving birth to a litter of puppies
. The female dog must be in the heat cycle in order for the mating process to be successful.
How does asexual reproduction occur in animals?
Reproduction may be asexual when one individual produces genetically identical offspring, or sexual when the genetic material from two individuals is combined to produce genetically diverse offspring. Asexual reproduction in animals occurs through
fission, budding, fragmentation, and parthenogenesis
.
Why do you think is asexual reproduction present among animals?
Asexual reproduction
can be advantageous for organisms that don't have others of their type around
. Without many mates, an organism might not be able to reproduce. And if it can't reproduce, it can't pass on its DNA and traits.
Do female dogs have periods?
Dogs typically go into heat on average every six months
, but this varies especially in the beginning. It can take some dogs around 18 to 24 months to develop a regular cycle. Small dogs usually go into heat more often — as much as three to four times a year.
What animals reproduce external fertilization?
Among vertebrates, external fertilization is most common in
amphibians and fish
. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes. Benthic marine plants also use external fertilization to reproduce.
What animals reproduce through internal fertilization?
Internal Fertilization
This occurs in
most bony fish, many reptiles, some cartilaginous fish, most amphibians, two mammals, and all birds
. Reptiles and insects produce leathery eggs, while birds and turtles produce eggs with high concentrations of calcium carbonate in the shell, making them hard.
Do animals reproduce the same way?
To reproduce,
animals need a male and female. Together they can create offspring, or babies
. Some animals, such as chickens, fish and snakes, lay eggs which contain their offspring. Other animals, including humans, tigers and sheep, grow their babies inside them until they are developed enough to be born.
Do any animals reproduce asexually?
Animals that reproduce asexually include
planarians, many annelid worms including polychaetes and some oligochaetes, turbellarians and sea stars
. Many fungi and plants reproduce asexually. Some plants have specialized structures for reproduction via fragmentation, such as gemmae in liverworts.
Which animals can reproduce without mating?
Greenflies, stick insects, aphids, water fleas, scorpions, termites and honey bees
are all capable of reproducing without males, using parthenogenesis.
Which of these animals can reproduce without mating?
Birds, like domesticated turkeys and chickens
, have also been able to produce offspring without mating. In the 1950s, scientists discovered that unfertilized turkey eggs could develop embryos through parthenogenesis. Birds, like domesticated turkeys and chickens, have also been able to produce offspring without mating.
Which of the following animals does not produce asexually?
The Correct Answer is
Option 1
i.e Annelida.
Do girl cats have periods?
Female cats do, in fact, go through a monthly cycle
, but their “periods” are quite different from human menstruation. Read on to find out what your cat in heat is feeling and what you can do to help.
Is it OK for a 1 year old dog to get pregnant?
A female dog's first heat cycle may begin as early as 6 months to 1 year. Although they are not yet considered adult dogs,
at this age onward, mating and pregnancy can occur
. If your dog becomes a mother as early as her first heat cycle, she may not know how to act in this motherhood situation.
Do dogs fart?
While the
occasional gaseous emission from your pooch is a normal and unavoidable part of life, excessive gas is not
. There are several causes of dog farts, from gastrointestinal issues to food intolerance, so you'll need to visit your veterinarian to determine what's triggering your dog's smelly gas.
What animals have internal and external fertilization?
In oviparity, fertilized eggs are laid outside the female's body and develop there, receiving nourishment from the yolk that is a part of the egg. This occurs in
most bony fish, many reptiles, some cartilaginous fish, most amphibians, two mammals, and all birds
.
Why do animals with external fertilization almost always live or reproduce in water?
External fertilisation of the female gamete by the male gamete takes place mostly in water;
because water facilitates: extended period of gamete survival and easy movement of sperms towards egg
.
Which of the following animals reproduce through binary fission?
Organisms in the domains of
Archaea and Bacteria
reproduce with binary fission. This form of asexual reproduction and cell division is also used by some organelles within eukaryotic organisms (e.g., mitochondria).
