sexual reproduction

Question 1

what are gametes?

Answer 1

are special cells produced by the process of meiosis which in humans are sperm and egg

Question 2

requires?

Answer 2

two parents

Question 3

what must both parents have?

Answer 3

supply a gamete for fertilization

Question 4

example of sexual reproduction

Answer 4

a great white could not mate with a make shark to produce an offspring

Question 5

why couldnt a great white could not mate with a make shark to produce an offspring

Answer 5

size difference, speed difference and generally two different species

Question 6

what is mating?

Answer 6

pairing of either opposite-sex or hermaphroditic organisms for the purposes of sexual reproduction.

Question 7

what happens in mating?

Answer 7

many species have a set time in which they try to concieve in order to have their offspring in the spring

Question 8

why can mating be difficult?

Answer 8

for species low in number or who live in large environments its sometimes difficult

Question 9

three advantages of sexual reproduction?

Answer 9

1. produces genetic variation
2. the species can adapt to new environments
3. genetic diversity

Question 10

three disadvantages of sexual reproduction?

Answer 10

1. time and energy
2. fewer offspring at a time
3. death can come to the offspring-many die from disease or disabilities

Question 11

conditions of fertilization?

Answer 11

1. nutrients for the embryo
2. warm enough temperature
3. moisture
4. protection

-does not garuntee-

Question 12

what are the methods of fertilization?

Answer 12

external fertilization
internal fertilization
pollination
pollen transport

Question 13

what is external fertilization?

Answer 13

the egg and sperm cell combine into one outside the body; usually by species in the ocean

Question 14

example of external fertilization?

Answer 14

spawning salmon

Question 15

advantages and disadvantages of external fertilization?

Answer 15

advantage:
little energy
lots of offspring
disadvantage:
low survival
no parental care

Question 16

what is internal reproduction?

Answer 16

sperm is deposited inside the female in order to fertilize the egg: more common in land animals; the embryo developes inside the mother until birth ex dogs

Question 17

advantages and disadvantages of internal fertilization?

Answer 17

advantage: parental care
higher survival
disadvantage:
more energy
fewer zygotes produced

Question 18

what is pollination?

Answer 18

pollen is transferred from the male portion of the flowering plant to the female reproductive portion

Question 19

advantages and disadvantages of pollination?

Answer 19

advantage:
self polinate or cross polinate by wind
disadvantage:
requires insects like bees

Question 20

what is pollen transport?

Answer 20

where non-flowering plants release pollen to the wind; cone barring

Question 21

advantages and disadvantages of pollen transport

Answer 21

advantage:
genetic variation
not indegestible
disadvantage:
requires the wind

Question 22

what are zygotes?

Answer 22

a diploid cell resulting from the fusion of two haploid gametes; a fertilized ovum.