Growth and reproduction

Question 1

What is cell division

Answer 1

When an adult cell splits into two duaghter cells

Question 2

What is metamorphism

Answer 2

animal puberty

Question 3

Frog life cycle

Answer 3

Eggs, tadpole, tadpole with legs, small frog and adult froh

Question 4

Butterfly life cycle

Answer 4

Egg, larva, pupa, butterfly

Question 5

What is asexual reproduction

Answer 5

when the thing can reproduce by itself

Question 6

what is sexual reproduction

Answer 6

when you need two genders male and female to reproduce

Question 7

what is male sex cell

Answer 7

sperm

Question 8

what is female sex cell

Answer 8

ovum

Question 9

what is ovulation and menstruation

Answer 9

Ovulation and menstruation is for the women to let her body release eggs so that they can be fertilised.

Question 10

details of the menstruation cycle

Answer 10

every 28 days a women sheds the lining of the uterus in the form of blood

Question 11

what is a foetus

Answer 11

A foetus is a stage of a growing baby in the stages of prenatal development that follow the embryo stage.

Question 12

what should pregnant women not consume

Answer 12

alchool because the baby eats it and will become addicted to it

Question 13

what is the process for the egg and sperm release to fertilization.

Answer 13

The sperm must be deposited and transported to the site of fertilization. Egg transport — Ovulation must occur and the egg must be “picked up” by the tube. Fertilization and embryo development — Union between the sperm and egg must result.

Question 14

• Size of ova (eggs) of different species and why (for example chickens)

Answer 14

Because the chicken doesn’t have the egg in the uterus. Most of the volume of a chicken egg is not the egg cell itself.

Question 15

what changes happen to males in puberty (name 8)

Answer 15

hips grow bigger, testis begin to make sperm, voice deepens, changes in behaviour, body begins to be more muscular, pubic hair grows, hair on face and body grows, testis and penis begin to grow bigger

Question 16

what changes happen to females in puberty (name 6)

Answer 16

ovaries start releasing eggs, menstruation starts, breasts begin to grow, hips get wider, pubic hair grows and changes in behavior.

Question 17

• Seed dispersal mechanisms:

Answer 17

wind, insects

Question 18

flower reproduction process

Answer 18

Pollen is made in the anther then travels onto another flower and lands on the stigma where its sticky then goes down the style into ovaries.

Question 19

how does a baby grow and develop

Answer 19

Embryo, foetus

Question 20

how do living things grow?

Answer 20

by cell divison

Question 21

what are the two purposes of cell division

Answer 21

so it can produce new cells or to repair wounds

Question 22

five stages through a human life

Answer 22

childhood, adolescence, adulthood, middle age and old age

Question 23

what is fertaliisation

Answer 23

when sperm and ovum meet to create a new living thing

Question 24

what is a 14 week old embryo called

Answer 24

a foetus

Question 25

how does a baby get food, oxygen and remove its waste

Answer 25

by the umbilical cord

Question 26

What is the comparison between the number of eggs that is produced by an animal and the level of care given by the mother?

Answer 26

Birds and mammals produce fewer eggs than other animals. Young birds and mammals generally dependent on their parents for food, warmth and protection from their enemies. Which increases the survival for the young.

Question 27

how are fruits formed

Answer 27

After the ova has been fertilised and the seeds develop, the petals, sepals and stamens of the flower fall off. The ovary becomes a fruit with seeds inside it (or sometimes on the outside of it eg. a strawberry.) in some fruits such as apples, the wall of the ovary thickens to form an edible fruit.

Question 28

four main methods of seed dispersal

Answer 28

1. The seeds fall out of the fruit and are carried by the wind
2. Animals eat the fruit and poo it out
3. Some seeds are sticky so they get caught in the fur of animals, the seeds can be spread many kilometers away from the adult plant
4. Fruit explodes throwing out the seeds