This document provides information about sexual and asexual reproduction. It begins by stating the objective is for students to differentiate between sexual and asexual reproduction in terms of the number of individuals involved and similarities between offspring and parents. It then provides details on various methods of asexual reproduction like binary fission, fragmentation, budding, spore formation and vegetative propagation. Examples are given for each method. Finally, it includes an activity asking students to complete a Venn diagram comparing sexual and asexual reproduction using terms from a word bank provided.

1. ASEXUAL AND
SEXUAL
REPRODUCTION
BY: MRS. REJOICE C. TILLO
SCIENCE TEACHER

2. OBJECTIVE: At the end of the session the students should be
able to differentiate sexual from asexual reproduction in
terms of:
1. number of individuals involved;
2. similarities of offspring to parents

4. • “make a new life”
• sustain the species so that it does not become
an extinct

5. Sexual Asexual

6. Sexual Asexual

7. Sexual Asexual

8. Sexual Asexual

9. Asexual Reproduction
Methods of Reproduction:
Binary Fission
Fragmentation
Budding

10. Asexual Reproduction
Binary Fission
 occurs when a parent
cell splits into two
identical daughter cells
of the same size
ex. bacteria

11. Asexual Reproduction
Fragmentation
 occurs when a parent
organism breaks into
fragments or pieces
and each fragment
develops into a new
organism
ex. starfish

12. Asexual Reproduction
Budding
 occurs when a parent cell forms a
bubble like butt the bud stays
attached to the parent cell while it
grows and develops when the bud is
fully developed it breaks away from
the parent cell and forms a new
organism
Ex. Hydra

13. Asexual Reproduction
Spore Formation
 Spore formation is another means of asexual
reproduction. During unfavorable conditions, the
organism develops sac-like structures called
sporangium that contain spores. When the
conditions are favorable, the sporangium burst
opens and spores are released that germinate to
give rise to new organisms.
Ex. Rhizopus

14. Asexual Reproduction
Vegetative Propagation
 Vegetative reproduction is any form of
asexual reproduction occurring in
plants in which a new plant grows from
a fragment or cutting of the parent
plant or specialized reproductive
structures, which are sometimes called
vegetative propagules
 Ex. Food crops such as cassava, sweet
potato, sugarcane, pineapple, banana,
onion, etc

15. Activity No. 1
Venn Diagram of Sexual and Asexual Reproduction
Direction: Compare and contrast sexual from asexual reproduction using a Venn diagram. Choose your answer from the word
bank
WORD BANK
Two parents Produces offspring No formation of gametes
Genetic variation Lower organisms Increases population
Formation of gametes Genetically identical One parent
Minimum of two offspring Higher organisms Minimum of one offspring

16. Generalization
Organisms reproduce either sexually or asexually.
The main difference between sexual and asexual
reproduction is the number of parents involved.
Sexual Reproduction means combining genetic
material from two parents while a sexual
reproduction produces offspring genetically
identical to one parent only.