REvision`

Question 1

Where is a Polar Bears enviroment?

Answer 1

Cold
Snowy
Icy

Question 2

What do animals compete for?

Answer 2

Mates
Food
Territory
Water

Question 3

What do plants compete for?

Answer 3

Minerals
Water
Light
Space

Question 4

Give me an example of a predator and a prey

Answer 4

Lion and Gazelle
Fox and a rabbit
Hawk and Mouse
Shark and Fish

Question 5

Another word for predator

Answer 5

Hunter

Question 6

If the gazelle population increases

What happens to the Lions population?

Answer 6

It increase as well because it has more food to eat which means that it can survive for longer

Question 7

If the gazelles population decrease

What happens to the Lions Population?

Answer 7

It decrease as well because it has no more food to eat which means that it can survive for less

Question 8

What are prey adaptations?

Answer 8

Small
Eye’s at both side
Something to protect
Camouflage

Question 9

Why do trees change in the season?

Answer 9

Trees change in the season because of photo synthesis. In the winter there is no need for leafs as they do not have enough sunlight.

Question 10

How do animals adapt in the winter?

Answer 10

Animals adapt in the winter from hibernation, migration,grow thicker fur,camouflage and storing food to help them survive through the winter.

Question 11

How do trees conserve energy?

Answer 11

The leaves fall of to conserve energy

Question 12

What does inherited mean?

Answer 12

Inherited means passing traits from parents to their child through genes. These traits, like eye color, hair type, and height, come from DNA and cannot be changed.

Question 13

What is variation?

Answer 13

The difference between individual organisms and species

Question 14

What is Inherited and what is Enviromental or both?

Natural Hair
Hair style
Welsh accent
Freckles
Weight

Answer 14

Natural Hair - Inherited
Hair style - Enviromental
Welsh accent - Enviromental
Freckles - Both
Weight - Both

Question 15

What is interspecific variation?

Answer 15

Interspecific variation is the differences between different species. For example, cats 🐱 and dogs 🐶 have different fur, sizes, and sounds because they are different species.

Question 16

what is intraspecific variation

Answer 16

Intraspecific variation is the differences within the same species. For example, humans 👩👦 have different hair colors, heights, and eye colors, even though they are all the same species.

Question 17

What type of graph would you plot for number of students against eye colour?

Answer 17

Bar chart

Question 18

What is discontinuous?

Answer 18

Specific groups or values

Question 19

What is continuous?

Answer 19

Can varey in different groups

Question 20

Discontinuous or Continuous?

Height
Blood group
Eye colour
Mass
Sex/ gender
Hair Colour

Answer 20

Height - Continuous
Blood group - Discontinuous
Eye colour - Discontinuous
Mass - Continuous
Sex/ gender - Discontinuous
Hair Colour - Continuous

Question 21

Characteristics that are inherited are usually . . .

Answer 21

Discontinuous

Question 22

How many chromosomes does a human have?

Answer 22

46 chromosomes or 23 pairs

Question 23

What do DNA give you?

Answer 23

Gives you characterisitcs

Question 24

What are genes?

Answer 24

Genes are a small section of DNA that contains a specific bit of information

Question 25

What is the name for a section of DNA that codes for a characteristics?

Answer 25

Gene

Question 26

What do we mean by evolution?

Answer 26

Evolution is when changes occur over millions of years.

Question 27

True or false? Enviromental get passed down your gene

Answer 27

False

Question 28

Explain natural selection?

Answer 28

Natural selection is how animals and plants adapt to their environment over time. The strongest or best-adapted survive and pass their traits to their young. For example, fast cheetahs 🐆 catch more food and have babies that are also fast. This helps the species survive!

Question 29

State the resource that the insects use logs fo?

Answer 29

Habitat

Question 30

Except for Habitat what is another resource that helps animals to survive

Answer 30

Food Water Mates

Question 31

Explain why plants don't compete for food?

Answer 31

They make there own food and this is called photosynthesis.

Question 32

State one resource that plants compete for that animals don't compete for?

Answer 32

Minerals Sunlight

Question 33

Name the cell component that stores genetic material

Answer 33

Nucleus

Question 34

Name the chemical that contains all the information needed to make an organism

Answer 34

DNA

Question 35

Describe the difference between a gene and a chromosome

Answer 35

A gene is a small part of DNA that controls traits but a chromosome is a larger structure containing many of genes which is normally coiled.

Question 36

Describe how genetic material is passed from parents to their child

Answer 36

Parents pass DNA to their child, carrying traits like eye and hair colour. Each parent gives 23 chromosomes, making 46 in total. These chromosomes contain genes, which determine how a child looks and grows.

Question 37

state one piece of evidence which proves hat dinosaurs existed?

Answer 37

Fossils

Question 38

State what it meant by extinction?

Answer 38

Extinction means when there is no more of that species living in the world

Question 39

State and explain two reasons that could cause an organism to become extinct

Answer 39

Habitat Camouflage Climate change Deforastation

Question 40

Describe the role of gene banks in helping to prevent extinctions

Answer 40

Holds DNA and they preserve genes for indagered species

Question 41

Explain why body mass is an example of continuous variation

Answer 41

Body mass is an example of continuous variation because it changes gradually and has many possible values. People can have any weight, not just fixed categories. It is affected by genes and lifestyle, like diet and exercise.

Question 42

Explain how the variation in students body mass is called?

Answer 42

The variation in students' body mass is called continuous variation because it changes gradually and has many possible values, not just set categories. It is influenced by genes and environment (like diet and exercise).

Question 43

Explain the process of natural selection and the role it plays in the evolution of species.

Answer 43

Variation Better suited to enviroment will live for longer and reproduce Passing on genes Over many generations the species will have favourable species.

Question 44

What is biodiversity loss

Answer 44

Biodiversity loss means fewer animals, plants, and insects in nature. This happens because of cutting down trees, pollution, and climate change. It can harm the planet and all living things.

Question 45

Describe at least 3 causes of biodiversity loss and say why are we doing those things

Answer 45

Deforestation 🌳➡️🏗️ – Cutting down trees to make space for farms, cities, and roads destroys animal and plant habitats. Pollution 🛢️💨 – Chemicals from factories, cars, and plastic waste harm animals, water, and the air we breathe. Climate Change 🌡️🔥 – Burning fossil fuels (coal, oil, gas) makes the Earth hotter, changing habitats and making it hard for some animals to survive.

Question 46

What can we do to reduce this biodiversity loss

Answer 46

Planting trees 🌳 to replace lost forests. Reducing pollution 🚯 by recycling and using less plastic. Using clean energy 💡 like solar and wind instead of burning fossil fuels. Protecting wildlife 🦁 by creating nature reserves and stopping habitat destruction. Using land wisely 🏡 to save natural areas for animals and plants