Session 2 and 3: Sexual Reproduction in animals

We are going to study the sexual reproduction in animals.

Let´s watch the following powerpoint !

fill in the gaps

Read the text below and complete the blanks please

Animals have reproductive organs to perform sexual reproduction they can be Cloze (1): JXUwMDM1JXUwMDBjJXUwMDBkJXUwMDA5 or Cloze (2): reproductive organs.

In some animals like the snail each individual is a Cloze (3): this means they have both types of reproductive organs

In sexual reproduction in animals there are three phases: the production of Cloze (4): , Cloze (5): and the development of the Cloze (6): .

Female reproductive organs, called Cloze (7): , produce gametes called Cloze (8):

Male reproductive organs, called Cloze (9): , produce gametes called Cloze (10):

There are two types of fertilization: external and internal

In Cloze (11): fertilization the union of the ovules and sperm occurs Cloze (12): the female reproductive organs

In internal fertilization it occurs Cloze (13): the female reproductive organs

The zygote is formed by the union of ovules and sperm , then it forms an embryo: it can complete its development in two ways:

Inside an egg ( Cloze (14): development) , the embryo feeds on nutritious substances contained in the Cloze (15): JXUwMDNkJXUwMDAyJXUwMDAw , when it is complete it breaks the egg , it is called Cloze (16):

Inside the female reproductive system ( Cloze (17): development) , the embryo takes food and oxygen from the body ot the Cloze (18): , when it is complete it leaves the inside of his mother it is called Cloze (19):

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Activity

Copy the following sentences in your book and finish the sentences:

A hermaphrodite is an animal who ..............................................................

Sexual reproduction has three phases : .............................................................

Female reproductive organs are called , they produce ...................................

Male reproductive organs are called , they produce ...................................

Fertilizatrion is .................................................................

In external fertilization , the union of ..................................................... occur ................................................ the female reproductive system

In internal fertilization , the union of ..................................................... occur ................................................ the female reproductive system

The zygote is transformed into a .......................................

There are two types of development of an embyo: ................................... and .................................

The embyo takes food from................................................. , it breathes............................................... when the development is complete it .............................................. It is called hatching

Activity

Now we can do the following photocopy

interactive exercise

interactive activity

Activity

Now you should do worksheets: page 2,3,4, 5 from your workbook

Activity with pc tablets

descarga work in pairs:

Now you will fill in your mind map including information about asexual and sexual reproduction in animals and types of fertilization .

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