Sexual Reproduction in Animals
Biology ⇒ Reproduction and Development
Sexual Reproduction in Animals starts at 7 and continues till grade 12.
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Describe the main differences between internal and external fertilization in animals.
Describe the role of the placenta in mammalian reproduction.
Explain the significance of genetic recombination during sexual reproduction.
Explain the term 'hermaphroditism' in animals.
Explain why external fertilization is less common in terrestrial animals.
Explain why sexual reproduction leads to greater genetic variation than asexual reproduction.
In a certain animal species, individuals can change sex from male to female during their lifetime. What is this phenomenon called?
In a certain species of fish, both male and female gametes are released into the water where fertilization occurs. What type of fertilization is this?
Which hormone is primarily responsible for the development of secondary sexual characteristics in males?
(1) Estrogen
(2) Testosterone
(3) Progesterone
(4) Luteinizing hormone
Which of the following animals exhibits internal fertilization?
(1) Frog
(2) Fish
(3) Bird
(4) Starfish
Which of the following animals is viviparous?
(1) Frog
(2) Cow
(3) Fish
(4) Turtle
Which of the following best describes the function of the acrosome in sperm?
(1) Provides energy for movement
(2) Contains enzymes to penetrate the egg
(3) Stores genetic material
(4) Forms the tail of the sperm
Fill in the blank: The process of development of a new individual from a zygote is called __________.
Fill in the blank: The release of an egg from the ovary is called __________.
In most mammals, fertilization takes place in the __________.
Oogenesis is the process of formation of __________ in females.
Gametes are always haploid. True or False?
True or False: All animals reproduce sexually.
True or False: External fertilization is common in aquatic animals.
True or False: Fertilization always results in the formation of a viable embryo.
