lesson 5

Question 1

1. 2 parents
2. Sex cells: sperm and egg
3. Sperm and egg join= fertilization
4. Offspring look different from parent (mixed DNA)
5. Examples
   Humans, some plants, mammals, fish, reptiles, etc

Answer 1

Sexual Reproduction

Question 2

1. One parent
2. No sex cells
3. Offspring produced by cell division
4. Offspring identical to parent (same DNA)
5. Several types in plants and animals

Answer 2

asexual reproduction

Question 3

plants and animals reproduce by —— and ——- reproduction

Answer 3

asexual and sexual reproduction.

Question 4

All living things eventually:

Answer 4

die

Question 4

All living things eventually:

Answer 4

die

Question 5

All living things eventually:

Answer 5

die

Question 6

If living organisms stopped reproducing,

Answer 6

life would cease to exist.

Question 7

Nature ensures that life continues in every type of living organism through the process of ———–

Answer 7

reproduction.

Question 8

is the process by which organisms produce offspring

Answer 8

reproduction.

Question 9

Most plants reproduce ——— through various means

Answer 9

asexually

Question 10

They reproduce through their stems, roots, and leaves

Answer 10

Asexual Reproduction in Flowering Plants

Question 11

This can occur either naturally or artificially with the aid of humans.

Answer 11

Asexual Reproduction in Flowering Plants

Question 12

runner, bulb, tuber, rhizome, corm

Answer 12

natural vegetative propagation

Question 13

It is often faster than growing plants from seeds.

Answer 13

Artificial Propagation Methods

Question 14

Farmers ———- plants by using a piece of plant material.

Answer 14

propagate

Question 15

• leaves, stems or roots are cut from one plant, planted in soil, and used to grow new individuals

Answer 15

cutting-

Question 16

small stems from one plant are attached to larger stems or roots of another plant

Answer 16

budding and grafting-

Question 17

• pieces of tissues from one plant are placed on a sterile medium and used to grow new plants.

Answer 17

tissue culture

Question 18

This involves the fusion of sex cells from parent plants

Answer 18

Sexual Reproduction in Flowering Plants

Question 19

This happens in the sexual organs of flowering plants, which are contained in the flower

Answer 19

Sexual Reproduction in Flowering Plants

Question 20

Most plants are hermaphrodites

Answer 20

(has both male and female sex organs).

Question 21

• male reproductive part

Answer 21

stamen

Question 22

• produces pollen that contains male sex cells

Answer 22

anther

Question 23

• holds up the anther

Answer 23

filament

Question 24

-female reproductive part

Answer 24

pistil

Question 25

-top part of the pistil that has a sticky surface to trap pollen

Answer 25

stigma

Question 26

joins the stigma and the ovary

Answer 26

style-

Question 27

-contains the female sex cells called ovules

Answer 27

ovary

Question 28

.-the transfer of pollen grains from the anther to the stigma

Answer 28

Pollination

Question 29

Pollination;

Answer 29

self pollination; cross pollination

Question 30

when pollen is carried from the anther to the stigma of the same plant

Answer 30

self pollination

Question 31

- when pollen is carried to the stigma of another plant

Answer 31

cross-pollination

Question 32

- when the pollen tube bursts and releases the male gamete, which then fuses with the female gamete

Answer 32

Fertilization

Question 33

seeds together with its fruit are carried away from a parent plant

Answer 33

seed Dispersal-

Question 34

Seed Dispersal occurs by;

Answer 34

wind, water, animal or explosion

Question 35

when seed, sometimes with its fruit, lands on the ground, it breaks through the seed coat and grows to form a new plant

Answer 35

Germination-

Question 36

1. Organism divides in half 2. 2 identical daughter cells produced 3. Daughter cells are half the parent’s size 4. Daughter cells grow, then divide too 5. In bacteria, amoeba, or paramecium(unicellular)

Answer 36

Binary Fission

Question 37

1. Small bud grows out of parent cell 2. Two different sized cells made (with identical DNA) 3. Bud breaks off and grows 4. In yeast and hydra (multicellular)

Answer 37

budding

Question 38

1. Repair/ grow lost body parts 2. Left over cells divide to make more cells 3. Lobsters, starfish, lizards (multicellular)

Answer 38

Regeneration/ Fragmentation

Question 39

: the primary goal of sexual reproduction is to merge the sperm cell and the egg cell of the male and female organisms to produce an offspring.

Answer 39

Fertilization

Question 40

This trait is advantageous for an animal that rarely meets and mates with members of its own species

Answer 40

Sexual Reproduction in Animals

Question 41

;can either have their eggs fertilized by another organism of their own kind or fertilize their own( simple vertebrates, earthworms, and some fishes)

Answer 41

Hermaphrodites

Question 42

Some animals possess both male and female organs, making them;

Answer 42

Hermaphrodites