Animals which give birth to young ones are called ________ animals.
The female gamete is called __________.
Which organ releases sperms?
Vas deferens
Testes
Scrotum
Urethra
Which is not a part of female reproductive system?
Uterus
Vagina
Urethra
A pair of ovaries
The vas deferens connects the epididymis to the
Seminal vesicles
Urethra
Testes
Prostrate gland
Indicate whether the following statements are True (T) or False (F)
Oviparous animals give birth to young ones
Each sperm is a single cell
External fertilization takes place in frog
A new human individual develops from a cell called gamete
Egg laid after fertilization is made up of a single cell
What purpose does the tail in a sperm serve?
Why do fish and frogs lay eggs in hundreds whereas a hen lays only one egg at a time?
In which female reproductive organ does the embryo get embedded?
Explain the importance of reproduction in organisms.
Solutions: to worksheet-6 Reproduction in Animals
Viviparous
Ovum
(d) Urethra
(c) Urethra
(c) Testes
False
True
True
False
False
The tail in the sperm is long and tapering of helps in the movement of sperm in the fallopian tube during fertilisation process.
Fishes and frogs lay hundreds of eggs & release millions of sperms in water, but all eggs do not get fertilised & develop into new individuals. This is because the eggs & sperms get exposed to water movement, wind & rainfall. Also there are other animals in ponds which may feed on eggs. Thus, production of large number of eggs & sperms is necessary to ensure fertilisation of at least a few of them. In contrast to this, a hen’s egg get fertilized every time it lays & develops into a young chick.
In female reproductive system, after fertilization, the embryo gets embedded in the uterus for further development.
Importance of reproduction in organisms:
Living organisms reproduce to maintain their number & for ensuring the continuance of their kind, generation after generation. It replaces old and dying ones by young ones later these young ones feeds, grows and reproduces again to sustain their number. Hence, reproduction is the fundamental feature of all living organisms. It is the means by which life goes on. Life would not exist if organisms did not reproduce.